What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





NOVA NCD 1

The NCD1 player uses Philips CD Pro 2 transport, one of the best CD modules currently available, inserted in a particular semi-rigid system, composed of a steel and wood mass suspended on anti-vibration mounting pads.
The conversion unit is developed around the top-of-the-line Analog Devices converter, the AD1955, and an upsampling circuit that raises the resolution of digital data to 24 bit/192kHz based on an Analog Devices AD1896 integrated circuit. The entire digital signal conversion system is mounted on an independent printed circuit board that can be easily removed and replaced in case of technological updates, without having to change the entire player.
Thanks to the high sampling frequency, it was possible to use a first order analog filter made up of a metal film resistor and an exceptionally high quality silver mica capacitor.
The analog output stage is based on the Nova proprietary circuit that uses JFET as active devices and is characterized by a single gain stage and the total absence of any feedback. The individual active components are selected individually.
For the digital and the control circuits and for the signal handling circuits, the power supply, starting from two toroidal transformers, is completely independent. A particular system has been adopted for filtering the power supply of the conversion and the analog units; a system that significantly reduces reciprocal noise between the various circuits. Consequently, the sound obtained is harmonically richer and the sound fade-out more natural.
The passive components used include high quality parts such as electrolytic capacitors, with extremely low internal impedance, polypropylene capacitors and low-noise metal film resistors. Each individual component has been chosen according to the real sound quality, determined through numerous listening tests.

Technical Specifications

Sample Rate: 192 kHz
Nominal mains voltage: 230V (180V ÷ 280V)
Resolution: 24 bit
Quiescent Consumption: < 20 W
Output Impedance: 350 Ohms
Dimensions: 440 x 370 x 110 mm (WxDxH)
Harmonic Distortion (THD): <0.02%
Weight: 14 kg
Output Voltage Swing: 1.8 V RMS
Chassis Material: Aluminium

NOVA NCD 2

The NCD2 player uses Philips CD Pro 2 transport, one of the best CD modules currently available, inserted in a particular, semi-rigid system composed of a steel and wood mass suspended on anti-vibration mounting pads.
The conversion unit develops around the top-of-the-line Analog Devices converter, the AD1955, in dual mono configuration, and an upsampling circuit that raises the resolution of digital data, based on an Analog Devices AD1896 integrated circuit. The entire digital signal conversion system is mounted on an independent printed circuit board that can be easily removed and replaced in case of technological updates, without having to change the entire player.
Thanks to the high sampling frequency, it was possible to use a first order analog filter made up of a metal film resistor and an exceptionally high quality silver mica capacitor.
The analog output stage is a discrete components design. Even for the critical current to voltage conversion it has been used a single stage discrete topology. The individual active components are selected individually.
For the digital and the control circuits and for the signal handling circuits, the power supply, starting from two toroidal transformers, is completely independent. A particular system has been adopted for filtering the power supply of the conversion and the analog units; a system that significantly reduces reciprocal noise between the various circuits. Consequently, the sound obtained is harmonically richer and the sound fade-out more natural.
The passive components used include high quality parts such as electrolytic capacitors, with extremely low internal impedance, polypropylene capacitors and low-noise metal film resistors. Each individual component has been chosen according to the real sound quality, determined through numerous listening tests.
Technical Specifications;
Sample Rate: 192 kHz
Nominal mains voltage: 230V (180V ÷ 280V)
Resolution: 24 bit
Quiescent Consumption: < 20 W
Output Impedance: 50 Ohms
Dimensions: 440 x 370 x 130 mm (WxDxH)
Harmonic Distortion (THD): <0.02%
Weight: 20 kg
Output Voltage Swing: 1.8 V RMS
Chassis Material: Aluminium
Note: balanced connections. S/P Dif, AES-EBU and USB digital inputs.

NOVA NIA 1


The NIA1 integrated amplifier has been developed around an innovative amplification topology used, on an exclusive basis, by Nova in its products. The particularity of this circuit is the total absence of any form of negative feedback. In fact, a unique solution is used that can compensate the intrinsic non-linearity of active devices rather than correct it with the negative feedback. The negative feedback, used in nearly all products on the market, often results in an unnatural or "transistorized" sound; moreover, it also can determine a compression or harmonic impoverishment of in the music being played.
In order to reduce manipulation of the musical signal to the barest minimum, the circuit used consists of just two stages of amplification: the first feedback-free stage serves for voltage amplification; the second, made up of a buffer of six Mosfets, provides current amplification.
To control the volume, an Analog Devices digital potentiometer is used that has 256 steps “compressed” into 100 levels (0-99) so as to obtain a pseudo-logarithmic regulation. This component is made up of an array of precision resistors switched by mosfets. Therefore, as opposed to other similar products, there are no active devices (operational amplifiers) which could cause a decline in musical performance.
Given the absence of any feedback, the single active devices are selected individually.The passive components used include high quality parts such as electrolytic capacitors, with extremely low internal impedance, polypropylene capacitors and low-noise metal film resistors. Each individual component has been chosen according to the real sound quality, determined through numerous listening tests.

Technical Specifications;
Power Output (RMS): 150W into 8 Ohms
Nominal mains voltage: 230V (200V÷265V)
Maximum Output Current: 25A, 80A peak
Quiescent Consumption: < 60W
Output Impedance: < 0,3 Ohms
Maximum Consumption: < 500 W
Input Impedance: 38 kOhms
Distortion (THD): <0,1%
Frequency Response: 5Hz ÷ 150kHz (-3dB)
Inputs: 5 lines + 1 phono (optional)
Maximum input voltage: ±5 V peak
Dimensions: 440 x 320 x 100 mm (WxDxH)
Weight: 12 kg
Chassis Material: Aluminium
Headphone Output Impedance: 50 Ohm

Luxman D 38u


The D-38u is an exclusive CD player that incorporates the modern digital circuits and analog technologies proved in the D Series. The D-38u is mounted in a square wooden case that may remind audiophiles of our past products, like the case with the vacuum tube integrated SQ-38u amplifier. The number 38, which symbolizes our best products, is given to this first CD player in the series. To realize acoustic expression that is refined and warm to listeners, semiconductor output based on high quality DAC and cathode follower-type vacuum output using vacuum tube ECC82 can be selected. The headphone output terminals and a remote control that covers all operations enable the listener to conveniently.

D-38u Features:
• 16mm thick MDF case with a natural wood veneer enhances the overall rigidity of the D-38u
• More than just a pretty face, the 8mm thick front panel, is a hairline-finished aluminum board which adds chassis rigidity
• D-38u circuitry is designed specifically for playing CDs, with a left-hand mechanism adopted for an ideal flow of power supply and audio signals
• Drive mechanism is supported on a thick 15mm base plate of pure aluminum for added stability and reduced jitter
• D-38u D/A converter features a 24Bit, 192KHz PCM1754 Burr-Brown DAC chipset
• Switch on the fly between Tube Output and Solid State Output, 12AU7 is only lit when vacuum tube section is in use
• Headphone output is driven by analog output, can be switched between Tube and Solid State on the fly
• Large, Easy to read display offers a 3-stage dimmer function (brightness adjustment)
• Externally cosmetics mirror other Luxman 38 series components, including power ring indicator and up/down lever switch
• Supplied full function aluminum remote control with wooden border even allows adjustment of the SQ-38u volume
• Vacuum tube components are designed for a life-time of service and are stress tested for 24 Hrs before installation into D-38u

Applicable disk; CD
Analog audio output; 1 x unbalanced line
Digital audio output; 1 system for coaxial line,1 system for optical line(TOS-LINK)
Output voltage; 2.0V
Frequency response; 4Hz–20kHz
Total harmonic distortion rate; 0.004%
S/N ratio; 95dB
Power consumption; 20W (Electrical Appliance and Material Safety Law), 0.1W (at standby)
Outside dimensions; 400 (W) x 168 (H) x 280 (D) mm (terminals and knobs excluded)
Weight; 9.0kg


LUXMAN SQ-38u

Luxman's retro-styled SQ-38u is the 11th installment of a now 25wpc EL34 push/pull integrated with auto bias and a classic Ultralinear Mullard circuit. The company first introduced it in 1963. Now the firm's current president Kazuyuki Doi has reinvented it for 2009. It includes a 2-stage PK-NF type MM/MC-hi/MC-lo phono stage with MM step up transformer and defeatable 30Hz rumble filter. There are tone and balance controls. There's a headphone output, rec/monitor loop and remote control for volume/mute. Very clever, a front panel switched pre-out/main-in loop avoids sound-degrading metal jumpers but offers a serious upgrade path (or even the option to insert a black box for crossover, room correction or similar ).


A wonderful blend of old & new; the SQ-38u incorporates many modern features in a classic design that exudes luxury & class.
Another remarkable design from Kazuyuki Doi - who brought us the MQ-88 / CL-88 as well more recently the NeoClassico.
Conservatively rated @ 30 watts per channel, has multiple inputs and tone controls (fully defeated at the touch of a button). On board phono stage with selectable MM, MC low or high output. MC duties are handled by a step-up transformer. High quality headphone output terminal.The SQ-38u delivers a linear Vacuum Tube Integrated Amplifier output as well as reliable performance for many years to come. Here is an amplifier that can be inherited by the next generation.


We release our new VACUUM TUBE INTEGRATED AMPLIFIER SQ-38u with traditional wooden box as a chassis. SQ-38u not only consists of classical audio components such as a square-shaped wooden chassis that reminds you classical products and various knobs with sophisticated workmanship but also has been designed under the concept that SQ-38u is a powerful machine with necessary and sufficient performance and convenience, which sufficiently functions as a pre-main amplifier from various sources selection/adjustment to speaker drive with only 1 unit. Most of vacuum tube products lately have a power amplifier circuit as a main component and a simple input selection device and a simple sound volume adjustment device additionally, but those are still named a pre-main amplifier.
SQ-38u is equipped with even a phono equalizer amplification circuit in which a step-up transformer with impedance selector supporting a variety of phono cartridges is embedded as well as a full-fledged separate structural vacuum tube pre-amplifier and a 30 watts power amplifier owing to EL34 push-pull UL connection to literally achieve integrated functions and performance at the same time. SQ-38u is supplied with a remote control that has hardly been supplied to conventional full-fledged vacuum tube products.
Therefore, you can stay in your favorite listening position even to readily adjust the sound volume. In addition, SQ-38u also features the selector that switches between 2 speaker systems, headphone output terminal, separate switch, pre-out terminal, main-in terminal, the last three of which are designed to improve the system in the future, and more. These different kinds of specifications allow users who have selected a specific taste such as vacuum tube products not to be patient with functions. SQ-38u has “38” that is LUXMAN’s golden number in its name, and we integrate high performance of the cuttingedge model into mellow and warm sound that is created by very a vacuum tube and that meets the demands of existing users in the name of it, and then we suggest new sense of values about modern vacuum tube amplifier.


The combination of 16 mm MDF and wood coated square-shaped wooden chassis remarkably contributes to beauty in design that provides people with sense of safety and to strength of the whole product.
The orthodox push-pull UL connection of output tube EL34 manufactured by Sovtek in Russia has achieved proven assured sound quality and necessary and sufficient rated output 30 watts (at 6W) in consideration of elongated bulb life.
SQ-38u is equipped with 2-staged PK-NF type of phono equalizer amplification circuit. Signal phase rotation has been minimized and the distortion rate has been successfully reduced to low levels.
You can use the MC step-up transformer with gain selection device at the use of MC cartridge to enjoy welldeveloped sound quality specific at using a transformer.
We use the less undulated traditional LUX type (first model: SQ5b in 1962) with gradual variation characteristic for the tone control circuit adjustable to your favorite sound quality at fine levels.
A nitrogen-capsulated audio relay is used for all of the function selection devices. As compared with direct wiring to switches, contact resistance, time-dependent change, and noise on lines become less. You therefore can implement safe and secure selection even for long-term service.
The speaker selector with A/B selection function is provided, which allows you to select between 2 speaker systems according your music taste or favorite era.
Separate configuration (pre-amplifier + power amplifier) of the unit allows flexible system upgrade in the future. The one-touch separate switch on the front panel is user-friendly to separate between pre-amplifier and power amplifier.
The headphone output terminal allows you to casually enjoy vacuum tube sound even at midnight.
The mute function is convenient at cartridge replacement. The low-cut function (cutoff 30 Hz) is provided to cut lowfrequency signals generated due to warped records.
Extensive functions that must satisfy analog record fans are provided such as monaural switch suited for monaural record play.
Our commitment to the exterior is comprehensive, for example, the up/down lever switch that reminds you of the LUXMAN amplifier series in early years, power ring indicator that can be said to be the identity of the 38 series, knobs with different treatment between front and surrounding, etc.
As much as 8 mm aluminum is applied to the front panel composing the chassis with wooden box to express rigidity impression and vigorous face.
Gold plated tight tube sockets are used because of their characteristic of low contact resistance.
A compact aluminum remote control is supplied as standard equipment capable of sound volume adjustment (including mute) remotely from your listening position.
All of the vacuum tube components are basically designed to be serviceable for a long time, selected after 24-hour aging, and finally integrated into the product.


Output: 30W +30 W (6Ω), 25W +25 W (8Ω, 4Ω)
Inputs: 1 phono (MM / MC high / MC low), 4 line inputs
Recording input and output: REC output, monitor
Speaker Outputs: A, B (independent switching, with simultaneous output)
Remote Control Functions: Volume up / down, mute
Tube Compilment: EL34 x 4, ECC85 (6AQ8) x 5, ECC82 (12AU7) x 2
Dimensions: 400 x 196 x 310mm
Weight: 20 KG

AIFAI "Linear" & "Monolite"

AIFAI LINEAR & MONOLITE

Pre e finale a valvole in Classe A

"... Si tratta di una azienda catanese operante da parecchi anni, diretta da Antonio Condorelli. Il marchio AIFAI risale invece, ad epoca recente, nel 2005, anno in cui presentò il primo prodotto, un preamplificatore solo phono "Phono Stage", che immediatamente riscosse il favore di pubblico e critica. Il "segreto" consistette in quello che già all'epoca si delineava come la "filosofia" costruttiva: prodotti dall'elevato rapporto qualità/prestazioni/prezzo, ma soprattutto una filosofia costruttiva "no compromise", ossia utilizzo di topologie circuitali affidabili, lineari ed ultralineari, componentistica di elevato livello, cablaggio in aria ed in particolare, l'utilizzo della Classe A, almeno nei prodotti alto di gamma. Sono questi tutti elementi che l'audiofilo poco incline alla tecnica trascura, nella convinzione che il solo ascolto basti per esprimere un giudizio, ma che nella realtà contribuiscono in modo determinante alla "creazione" di un suono di elevatissima qualità. Sono per noi di HFG, i cosiddetti elementi prioritari, senza i quali non si va da nessuna parte. ..."


"...Per chi non fosse tanto addentro alla tecnica, "cablaggio in aria" significa che tutti i componenti sono saldati "punto a punto", quindi senza l'utilizzo di circuiti stampati. Questi a causa dei piccolissimi percorsi in rame, spesso e volentieri perdono in qualità di trasferimento del segnale, variando le caratteristiche elettroniche della topologia circuitale. Con la saldatura diretta dei componenti, è possibile realizzare un migliore trasferimento del segnale, con le sole variabili dettate dall'utilizzo dei componenti, specialmente se il cablaggio è di eccellente qualità (che non centra con la sezione…). Ciò permette una notevole qualità della sperimentazione del "suono" della componentistica, realizzando così prodotti perfettamente messi a punto, sia dal punto di vista tecnico che sonoro. La "pregevolezza" dei componenti in AiFai non è fine a se stessa, ma indirizzata e orientata all'ottenimento delle migliori prestazioni sonore, che la tipologia circuitale adottata è in grado di esprimere. Tradizione ed innovazione, appunto. ..."

Armonia HiFi CD1

Il lettore CD "CD1 Player Reference" racchiude in se tutta l'esperienza maturata in questi anni durante lo sviluppo di tutti i nostri prodotti. Abbiamo voluto realizzare una macchina che potesse rappresentare una scelta definitiva in un impianto High-End.
La filosofia progettuale è la nostra solita: alimentazioni molto abbondanti e curate, sbroglio dei circuiti stampati con percorsi massa controllati in modo da decidere in sede di progetto quale sia il percorso migliore delle correnti, circuiti stampati in FR4 di 2,4mm di spessore, spessore rame delle piste di 70um invece degli standard 35um. Tutti questi dettagli portano ad una generale stabilità funzionale dei circuiti con una benefica ricaduta sulle prestazioni audio.
A dimostrazione della validità dei progetti sviluppati, le apparecchiature che compongono questa macchina sono quelle inserite nel "CD1 Transport" ed il "CD1 Player" (disponibili assemblati ed in kit). Sono però equipaggiate con componenti dalle prestazioni superiori (Elna, Wima) ed i componenti discreti sono selezionati a mano per garantire un perfetto abbinamento. Completano l'opera il cablaggio interno della macchina eseguito con cavi in struttura multifilare, e particolari in alluminio che aumentano la rigidità di tutta la macchina (frontale, coperchio CD e piastra per CD-PRO2).
Caratteristiche tecniche:
Lettore CD con meccanica CD-PRO2 Philips in sospensione
DAC con interfaccia diretta sulla meccanica di tipo I2S
Conversione a 24 bit con due PCM1704 per canale
Amplificatore di linea integrato a componenti discreti
Nessun condensatore sul percorso di segnale
Condensatori Elna e Wima sullo stadio di conversione e di amplificazione linea
Cablaggio interno con cavi Armonia Hi-Fi multifilari
Filtro rete in ingresso alimentazione 220Vac
Due trasformatori di alimentazione separati per la sezione di gestione meccanica e per la sezione di conversione
Quattro alimentazioni separate per la sezione di gestione della meccanica
Tre alimentazioni separate per la sezione di conversione


Pannello di smorzamento in legno inserito tra il fondo dell'apparecchio e la piastra portante in metallo
Pannello frontale in alluminio di 5mm di spessore spazzolato nero e pantografato
Coperchio di chiusura CD in allumnio da 10mm di spessore e lavorato dal pieno. Peso di circa 1Kg Pannello in alluminio spazzolato nero nel vano CD per aumento inerzia CD-PRO2
Peso superiore a 12 Kg in ordine di marcia
Uscita digitale AES (RCA)
Uscita analogica di linea (RCA) a 2Vrms @ 0dB incisi sul CD
Spegniemnto di tutta la sezione display per utilizzo in "notturno" oppure per lasciare sempre acceso l'apparecchio
Deemphasis attivabile manualmente
Alimentazione: 220Vac @ 50Hz +/-20%

DYNAKIT Pas-3





DYNAKIT Pas 2

Dynakit Preamplifier PAS-2 is a versatile, two channel preamplifier control unit, which permits either monophonic or stereophonic reproduction from any modern program source with any type of modern amplifier. This preamp is a self-powered unit which contains all the necessary amplification, equalization, and control facilities for playing phonograph records, tape, radio, microphone, or other such sources either stereophonically, or monophonically. The Circuit of the Dynakit is unique, and is a subject of patent applications. All stages are enclosed in feedback loops and are adjusted for an absolute minimum of distortion and noise. Signals going through this instrument, proving that its characteristics are ideal, since the goal of any high fidelity equipment is amplification and reproduction of the original signal without change.
The preamplifier essentially has five parts. The power supply is one part and is common to both channels. This power supply contains a full-wave rectifier and a power transformer. A separate rectifying system is used to provide direct current to heat the filaments of the tubes. This is one of the reasons why there is practically no hum in the Dynakit.
The remaining four sections have several functions. There are equalizer-amplifier stages: high-gain circuits designed to bring up the level of such devices as magnetic phonograph cartridges and at the same time to impose the proper playback characteristic on the frequency response. There is one of these stages for left and another for the right stereophonic channels. THe remaining two sections consist of the two amplifying-tone control stages, one for left and one for right channel. High level signals such as those from a radio tuner are fed through these stages, and the functions of volume control, tone control, and similar control functions are accomplished at these points in the circuit.


Specifications:
Inputs: 3 stereo low level: RIAA phono, NAB tape head (7-1/2"), "Special" (optional second phono, microphone, etc.). 4 stereo high level: FM-AM, FM-Multiplex, Spare, Tape.
Outputs: Tape output. Audio output.
Controls: Selector, Volume, Balance, Blend, Individual Treble and Bass for each channel, Tape Monitor, Loudness, Scratch Filter, Power.
Tone Control Range: ±14 dB at 20,000 cycles; ±20 dB at 20 cycles.
Distortion: Less than 0.05% intermodulation at 2 volts (sufficient output to drive any amplifier). Distortion does not increase at low settings of volume control. Harmonic distortion below the measurement capabilities of regular commercial grade test equipment.
Response: ±.5 dB 10 cps to 40 kc. Response not affected by position of volume control.
Transient Performance: Passes square waves without ringing and with minimum deformation from 20 cps to 20,000 cps. No overshoot or bounce on pulse type signals. Instantaneous recovery from overload.
Hum and Noise: 2 microvolt equivalent noise input on RIAA. 74 dB below level of 10 millivolt signal.
Gain: 60 dB at 1000 cps on RIAA;
60 dB on Tape Head input.
20 dB on Radio and other high level inputs.
Impedances:
Output impedance 1,000 ohms. Terminating impedance 100,000 ohms or higher. Low level input impedance 50,000 ohms; high level input impedance 250,000 ohms.
Tubes: 4 12AX7 (ECC-83); 1 12X4; 1 selenium stack.

Beveridge Cylindrical Sound System

The Beveridge Cylindrical Sound System has been universally acclaimed as the Rolls Royce of loudspeaker systems. Its superb performance capability and engineering superiority are unmatched in sound reproduction history. The BCSS achieves the highest stereo fidelity standart yhe world has ever known. It represents the technological development of a unique full frequency wave front which retains the realistic essense of original sound so exactly that there is no distinguishable difference between reproduced and original sound.For the serious music lover, BCSS fills a long awaited need. The quality of sound achieved is intended to satisfy the most discriminating listener, and provide him with a continuous of pleasure.No special acoustic surfaces are needed to pamper the BCSS. It is equipped with its own direct-coupled, integral amplifier, and is designed to function with any good quality pre-amplifier.For best results, the speakers should be placed across from each other, against opposite walls. However, excellent results have been obtained when spaced more than 6-feet apart along the same wall. Either way, intrusion into the room is minimal.
The Beveridge Model 2 is a very unique loudspeaker and, in the opinion of many, the best speaker we have ever produced. It is a scaled down version of its predecessor the Model One, such that it can fit through doors and hallways. It is an active speaker, driven by its integral OTL tube amplifier, capable of an equivalent output of 1500W. Its full range of 40 Hz - 15 KHz (+/- 2 dB, with useful output at 35 Hz) of 180 degrees cylindrical wave front. For more on cylindrical wavefront sound propagation, combined with the benefits of a monopole design.

“This 6-foot high device consolidated the entire frequency range into a vertical line source, and uniformly disperses it over a horizontal pattern, 180 degrees wide. The beaming characteristics of the high frequencies are ingeniously translated into the same dispersive pattern as the low frequencies, creating a perfectly balanced cylindrical sound wave front. The end result is flawless stereo fidelity in the home, and that, says Harold Beveridge with a grin, is what the last quarter of a century was all about as far as he was concerned.”

An integral amplifier was located in the base and did require a cooling fan. Electrostatic speakers need high voltages to drive the diaphragm. The amplifier could deliver peak outputs greater than 1500 volt amperes into the speaker’s capacitive load of 5000 pf. Response was claimed to be plus or minus 2 dB from 40 to 15kHz and over a wide angle of 180 degrees.
The lowest useable output was 35 Hz. The system was 6-1/2 feet tall, 2 feet wide and depth was 16 inches at the center with 10 inches at the sides.






Audio Analogue CRESCENDO



To think of the Crescendo Cd Player as a common high-end player or still worse as a low -level high-end one would be totally misguided to say the least!!!! The Crescendo CD Player, in reality, is the result of in depth research and careful attention to detail. In fact, the product has been implemented with technology only previously used in benchmark players... until now. This challenge has been undertaken with the ulterior requirement of maximizing value for money. This has pushed the Audio Analogue designers to develop new circuit solutions and has brought about results which have gone over and above our already ambitious initial targets!


A toroidal transformer is used with secondary dedicated stages: one to the Analog/DAC section power supply and other two dedicated to the digital power supply. The analog power supply has been realized using all Audio Analogue‘s strategies to reduce any interference and kill the noise in every part of the unit. Regulation stages have been placed in every sensitive circuit point and the bypass capacitors have been chosen not only for their electric performance but also after long and careful listening sessions.

A complete 24bit/192KHz DAC chain has been implemented. All our experience and technology has been widely used. We have especially focused on the bypassing of the power supply, the decoupling of the DAC outputs and we have worked on a perfect separation between analog and digital circuits, with particular attention paid to the ground return path separation.

In this product Audio Analogue has placed a lot of focus on the output stage and a new approach to the design has been developed. We have realized a fourth order active output filter that, together with the inner one pole filter inside the used DAC, forms a fifth order output one. Such a high order (usually found only in really very expensive products!) has permitted us to increase the cut off frequency of the output filter with excellent results on the audio performance of the unit, especially for the increased precision of the listening stage. The problem of the approach (and that’s why it is usually implemented in high price products) is the added distortion and noise due to the high number of stages the sound has to pass through. Audio Analogue has used all its experience and technology to design every part of the stage and choose every passive component to reduce, after long endeavours, the overall distortion and noise with absolutely astonishing results!

The Crescendo CD Player has both the Trigger in, through which the unit can be turned on by another unit in the chain and a Trigger out, which can be used to turn on an external unit.


The Crescendo CD Player, like all the Audio Analogue CD Players, is mounted with the Teac CD-5010A, a mechanism specifically designed for high end audio applications.
This CD Mechanism is very sturdy and has a very low Jitter output.
The best starting point for a very high performance player!

Specifications:
THD at 1 kHz 0 dBFs (Band limits 0Hz-22KHz):  less than 0,003%
THD at 1 kHz  -10 dBFs (Band limits 0Hz-22KHz):  less than 0,005%
Dynamic Range (Band limits 0Hz-22KHz):  97 dB
Noise Level (Band limits 0Hz-22KHz):  -120 dBV
Output Level (Max rms voltage output value):  2
Digital Output:  Coaxial
Unbalanced Output, Trigger IN and Trigger Out
CD Mechanism:  TEAC CD-5010A
Dimensions (H x W x D):  3,2 x 17,5 x 13,7 inch

Weight:  15,0 lbs

Clarion series UFO



Il marchio Clarion conosciuto oggi sopratutto come il produttore leader nel settore dei impianti car stereo, ma nel suo passato ha realizzato anche i sistemi di hi fi per ascolto domestico. Uno dei sistemi meglio riusciti è il famoso "UFO series" prodotto tra 1977 e 1978. Un sistema senza precedenti. Nell' estetica, perchè il design di ogni elemento è concepito in modo da essere perfettamente compatibile con quello degli altri, cosi da farne un perfetto tutt'uno. Nell'ascolto, perchè l'elettronica dei singoli elementi è perfettamente in simbiosi con quella degli altri, anzi, concepita in modo da ottimizzare la qualità del suono.
Il sistema è composto da 3 elementi principali come: MT 7800; MA 7800; MD 7800.
Per completare un impianto c'e' ancora il giradischi MP 78000





Amplifier MA 7800:
Power:  2 x 45 W, both channels 1kHz;
Power Bandwidth:  5Hz - 55kHz , 3dB;
Harmonic Distortion:  0,05% (45W);  0,02% (1W);
Damping Factor: 70 (8 ohm);
Signal-to-Nois Ratio:  85dB;
Imput Sensitivity: 2mV;
Adjustable Tone Control:  with 4 tipping points



Tuner MT 7800;
Sensitivity: 1,5 mV, 30dB S/N;
Signal-to-Nois Ratio:  mono 70dB;
Harmonic Distortion:  0,3% mono;  0,5% stereo;
Frequency Response:  20Hz - 15kHz  ±1dB




Cassette Deck MD 7800:
Wow and Flutter:  0,07%;
Frequency Response:  20Hz - 18kHz ±3dB;
Harmonic Distortion: under 1,5%;
Signal-to-Nois Ratio:  68 dB (Dolby/DNL).
Other Features:
Fully electronically controlled;
Rear circuits for remote control;
2 motors;
Automatic rewind tape;
Memory-stop

Sansui AU-11000

Powerful Advantages in Audio
Sansui's all-black amplifier series has earned a reputation among the knowledgeable as "The professional's equipment" - professional in circuit design, layout execution, low-distortion performance and dependable power supply systems. Every owner of Sansui amp knows that housed inside the elegantly simple-looking black boxes are high-technology circuits and features for true high fidelity reproduction.
Every one of the integrated stereo amplifiers here delivers strictly hi-fi reproduction over long years of operation.Creative engi neering means new and useful cicuit concepts in these top-of-the-line AU/TU models.Integrated stereo amps AU-11000 (110 watts RMS per channel) both feature comp parallel push-pull OCL outputs for astonishingly low distortion. Triple Tone Control and many other extras make them ideal for professional or semi-pro use.


CARATTERISTICHE TECNICHE
SANSUI AU 11000
Potenza : 110 +110 W RMS min. su 8/4 Ohm
Risposta in frequenza : 5 - 100.000 Khz
Distorsione armonica : 0,08 Hz ±1 dB
Distorsione d’intermodulaz. : 0,008 %
Ingressi : Phono1 e 2, Tape 1 e 2, Tuner, Aux
Sensibilità ingressi e Rapporti s/n : Phono 1: 2-4-8mv, Phono 2: 2 mv (s/n 65 dB);
Tunner, Aux 1 e 2, Tape: 130 mv (80 Db)
Uscite : 2 coppie altoparlanti, 2 registratori , cuffia
Controlli tono : bassi ±10 Db a 30 Hz, medi ±15 dB a 1.500 Hz , alti ±10 Db a 20 KHz
Selezione del punto di lavoro : bassi 150-300-600 Hz , alti 2-4-8 KHz
Filtri : antirombo, antifruscio, muting.
Dimensioni (L x H x P) : 460 x 160 x 375
Peso : 19,3 Kg
Prezzo dell’epoca : 990.000 lire
Anno di produzione : 1975 - 1977