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

EISA 2012-2013 Audiolab M-DAC

 The new age of USB computer audio has rekindled the flame of the outboard D/A converter (DAC). Among this new breed of USB DACs few are as simple to implement or as versatile in use as Audiolab’s fabulous little M-DAC. It works directly with virtually all PCs and Macs without special USB drivers while its bold display shows a wealth of information about the incoming music data. An onboard volume control lets the M-DAC do the job of a preamp just as the choice of seven digital filters allows fine-tuning of its sound. And what a sound – powerful, insightful and delicate, it cuts to the heart of the music while remaining faithful to its soul. This is a very high performance product that’s perfect for both the computer audio novice and seasoned enthusiast alike.

Model:  M-DAC
General description:  Digital-to-analogue converter
DAC:  ESS Sabre32 9018 chip
Resolution:  32 bits
Maximum Sampling Frequency:  84.672MHz
Digital input:  2 x 24-bit/192kHz coaxial ,2 x 24-bit/96kHz Toslink optical, 1 x 24-bit/96kHz USB
Digital output:  1 x coaxial, 1x Toslink optical
Output voltage:  RCA: 2.25V RMS,XLR: 4.5V RMS
Total Harmonic Distortion:  RCA: <0 .002=".002" p="p" xlr:="xlr:">
Frequency response:  20Hz - 20kHz (± 0.2dB)
Dynamic range:  RCA: >115dB;XLR: >122dB
Crosstalk:  RCA: <-120dB;  XLR: <-130dB
Power requirements:  220--230V /100-120V (50 ~ 60Hz)
Dimensions (H x W x D):  59 x 250 x252mm
Colour:   Black, Silver

EISA 2012-2013 Cambridge Audio Azur 851C - 851A

 When is a CD player more than a CD player? When it’s designed to be an outboard D/A converter complete with integral CD drive. This is Cambridge Audio’s Azur 851C, its best player to date and one that combines its most sophisticated DAC design with USB and legacy digital audio inputs. The partnering 851A amplifier is just as slick, employing the latest version of the company’s proprietary Class XD technology to comfortably exceed its 120W specification. So while the 851C DAC/player brings a quiet composure to the party, the 851A is a wolf in sheep’s clothing, a muscular amp that grips the speakers and serves up tight, powerful and extended bass. In the 851C and 851A you’re getting cutting-edge technology for substantially less than high-end prices. Add the best speakers you can afford and this two-channel system will deliver a taste of hi-fi heaven.


 Detailed Specifications 851A
Power Output:  120W RMS into 8 Ω/ 200W RMS into 4 Ω
THD (unweighted):  < 0.001% 1 kHz at 80% of rated power; < 0.01% 20 Hz - 20 kHz at 80% of rated power
Audio Inputs:  2 sets of balanced XLR, 8 further RCA inputs
Audio Outputs:  Preamp output, Record output
Frequency Response:  10 Hz - 50 kHz  ±1 dB
S/N Ratio (ref 1W/8 Ω):  > 93 dB
Input Impedances
Inputs 1 and 2 (balanced):  20 kΩ
Inputs 1-7 (unbalanced):  20 kΩ
Rec Input:  20 kΩ
Power Amp Damping Factor:  > 110 at 1 kHz
Max. Power Consumption:  800 W
Minimum Power Consumption:  70 W Active (no signal)
Standby Power Consumption:   <0 .5w=".5w" p="p">
Controls:  Shelving type
Max bass boost/cut  ±10 dB at 10 Hz
Max treble boost/cut ±7.5 dB at 20 kHz
Dimensions (H x W x D):  115 x 430 x 385 mm (4.5 x 16.9 x 15.2”)
Weight:  15.0 kg (33 lbs)

Detailed Specifications 851 C
D/A Converter:  Dual Analog Devices AD1955 24 bit DACs
Digital Filter:
Analog Devices Black Fin ADSP-BF532 32 bit DSP performing 2nd;
Generation ATF2 up-sampling to 24-bit/384 kHz;
Linear Phase, Minimum phase or Steep modes.
Analogue Filter:  2 Pole Fully Differential Linear Phase Bessel filter
Digital Input 1:  S/PDIF 75 Ω or Toslink optical
Digital Input 2:  S/PDIF 75 Ω or Toslink optical
AES/EBU Input:  XLR balanced 110 Ω per phase
USB Audio Input:  USB Type B conforming to Audio profile 1.0 or USB Audio profile 2.0 (user 1.0 or USB Audio profile 2.0 (user selectable)
Analogue Audio Outputs:  Balanced XLR and unbalanced RCA analogue audio outputs
USB 1.0 16-24 bit, 32-96 kHz;
USB 2.0 16-24 bit, 32-192 kHz;
Toslink 16-24 bit, 32-96 kHz;
S/PDIF and AES/EBU 16-24 bits 32-192 kHz;
CD playback is intrinsically limited to 16-bits 44.1 kHz
Standby Power Consumption:  <0 .5=".5" p="p" w="w">
Dimensions (H x W x D):  115 x 430 x 360 mm (4.5 x 16.9 x 14.7”)
Weight:   10kg (22lbs)

EISA 2012-2013 Dali Epicon 8

 Danish loudspeaker brand DALI is no stranger to the high-end and this latest addition to the EPICON range is appropriately ‘epic’. The statuesque EPICON 8 stands 1.26m tall and features a dedicated wood-fibre coned midrange driver sited above a novel hybrid tweeter module and augmented by two bass drivers. Key innovations include the use of a non-conductive powder material in the magnet system, called soft magnetic compound (SMC), claimed to reduce distortion over a wide dynamic range. The EPICON 8’s enclosure is formed of six layers of MDF and is finished in a choice of gloss black and real wood veneers. Its sound is equally impressive, at once bold and intimate, its broad soundstage peppered with musical detail, filling the largest of rooms with ease.

Speaker Type:  Front
Frequency Range:   35 - 30.000 Hz ±3 dB
Sensitivity (2,83 V/1 m):  89 dB
Nominal Impedance:  4 Ω
Maximum SPL:  112 dB
Recommended Amplifier Power:  50 - 500 W
Crossover Frequency:  550 / 3.100 / 15.000 Hz
High Frequency Drivers:
1 x 10 x 55 mm Ribbon;
1 x 29 mm Soft Textile Dome
Midrange Driver:  1 x 6½ Wood Fibre Cone
Low Frequency Driver:  2 x 8 Wood Fibre Cone
Enclosure Type:  Bass Reflex
Bass Reflex Tuning Frequency:  28,0 Hz
Connection Inputs:  Bi-amping (active crossover) and Bi Wire
Magnetic Shielding:  No
Recommended Placement:  Floor
Recommended Distance From Wall:  >35 cm
Max. Dimensions Incl. Base And Grille (HxWxD):  1262 x 353 x 497 mm
Dimensions, Cabinaet  Body (HxWxD):  1225 x 264 x 485 mm
Weight:  47,5 kg

EISA 2012-2013 Pro-Ject Debut Carbon

 Despite its name, the Debut is not Pro-Ject’s first turntable but one of a series that has formed the backbone of this hugely successful brand. In its latest guise, the Debut includes a one-piece chassis, available in seven gloss finishes, with a belt-driven alloy platter. The motor benefits from an improved suspension but the most distinctive feature of this deck is its new carbon-fibre tonearm, derived from Pro-Ject’s popular 9cc model. The sound of this turntable combination is as mature as the design itself, with a dynamic, foot-tapping quality reminiscent of far costlier models. Voices are also portrayed with an insightful clarity and weight. If you are curious about the vinyl revival, then Pro-Ject’s Debut Carbon is the ideal place to start spinning those LPs.

Speed:  33 and 45 (manual change)
Drive System:  Belt drive
Platter:  300 mm metal with felt mat
Mains Bearing:  Stainless steel
Wow and Flutter:  ±0,10%
Speed Drift:  ±0,80%
Signal-to-Noise Ratio:  -68 dB
Tonearm:  8,6" Carbon
Effective Arm Length:  218,5 mm
Effective Arm Mass:  6,0 g
Overhang:  18,5 mm
Tracking Force:  10 - 30 mN
Power:  110-120 or 230-240 Volt 50/60 Hz
Dimensions (W x H x D):  415 x 118 x 320 mm
Weight:  5,6 kg

EISA 2012-2013 KEF LS 50

 To casual viewers the LS50 will look like a minimalist, single-driver loudspeaker but in reality it’s more sophisticated. In fact, this single driver is one of KEF’s famous two-way Uni-Q units with its tweeter mounted at the acoustic centre of the mid/woofer. This latest iteration, coloured rose gold, features a cone formed of a special magnesium/aluminium alloy and benefits from a longer ‘throw’ to improve bass performance. The cabinet is not only beautifully finished but is sturdily constructed with constrained layer damping between its walls, internal cross-brace and front baffle. As promised, the LS50 delivers a remarkably big sound with vivid imaging and a tremendous bass weight that belies its compact dimensions. Shut your eyes and you’ll believe you are listening to a far bigger loudspeaker.

Type:  Two-way bass reflex
Drive Units:  Uni-Q Driver Array
HF : 25 mm (1") vented aluminium dome
MF : 130 mm (5¼") magnesium/aluminium alloy
Frequency Range (-6 dB):  47 Hz - 45 kHz
Frequency Response (±3 dB):  79 Hz - 28 kHz
Crossover Frequency:  2,2 kHz
Amplifier Requirements:  25 - 100 W
Sensitivity (2,83 V/1 m):  85 dB
Harmonic Distortion (2an & 3rd harmonics):
Max. Output:  106 dB
Nominal Impedance:  8Ω (min. 3,2 Ω)
Dimension (H x W x D):  302 x 200 x 278 mm
Weight:  7,2 kg
Finish:  High gloss piano black cabinet

EISA 2012-213 Dynaudio Xeo

 Hi-fi without cables? If this is your domestic dream then Dynaudio has the solution with its Xeo wireless audio system. If Wi-Fi is traditionally associated with lo-fi then Xeo looks to set a higher standard with its bespoke transmitter capable of streaming music, up to 16-bit/48kHz resolution, to its Xeo 3 standmount and Xeo 5 floorstanding loudspeakers. Both speakers include two 50W amplifiers for their bass and treble drivers while the partnering Xeo transmitter features analogue, USB and Toslink optical digital inputs for compatibility with a wide range of hi-fi sources. Not only does Xeo support multiple sources but it will also stream out to three independent speaker zones, spreading its lively and dynamic sound quality throughout your home.

 Technical Specifications Transmitter
Transmitter signal frequency:  2.4 GHz
Wireless signal resolution / sample rate:  16 bit / 48 kHz
Frequency response:  20 Hz – 22 kHz
Typical input voltage:
RCA : 1 Vrms,
Minijack : 250 mVrms
Input impedance: 
RCA : 11.4 kΩ,
Minijack : 8.2 kΩ
Dimensions (W x H x L):  120 x 32 x 90 mm (4.7 x 1.3 x 3.5 inch)
Weight:  0.148 kg
Power Supply:
Adaptor: 100 – 240 V
Micro USB: 5 V / min. 500 mA

 Technical Specifications Xeo 3
Frequency response:  48 Hz – 22 kHz
Power consumption:  4 – 76 W
Power consumption standby:  0.6 W (network active)
Power rating:  Woofer: 50 W, Tweeter: 50 W
Dimensions (W x H x L):  170 x 281 x 246/262 mm, (6.7 x 11.1 x 9.7/10.3 inch)
Weight:  6.4 kg
Power supply:  100 – 230 V
White or Black Piano Lacquer
Satin White or Black Lacquer

Technical Specifications Xeo 5
Frequency response:  36 Hz – 22 kHz
Power consumption:  4 – 76 W
Power consumption standby:  0.6 W (network active)
Power rating:  Woofer: 50 W, Tweeter: 50 W
Dimensions (W x H x L):  170 x 922 x 260/275 mm, (6.7 x 36.3 x 10.2/10.8 inch)
Weight:  16.7 kg
Power supply:  100 – 230 V
White or Black Piano Lacquer
Satin White or Black Lacquer

EISA 2012-2013 Pioneer N-50

 Network-enabled hi-fi separates are evolving at a fiercesome pace but Pioneer’s N-50 is sufficiently ahead of the pack that it sets the standard in its class. Its 2.4in colour LCD screen squeezes in a lot of information, including a thumbnail of the album cover and details of the file type and sampling frequency. The N-50 is also a lot heavier than its slim profile suggests thanks to its multiple power supplies and reinforced chassis. But most important of all, its DLNA-compliant Ethernet connection will handle the highest resolution 24-bit/192kHz media with other connections to support legacy digital products, USB audio and external
Wi-Fi/Bluetooth adapters. Musically, it serves up a soundstage you can walk into – guitars sound slinky and cymbals positively sizzle as the N-50 weaves its digital magic.

Audio Features
192khz 24 bit Bit Asynchronous USB DAC
DAC Only Mode (Coax and Optical)
Advanced Sound RetrieverTM
Sound Retriever Air (For Bluetooth)
Auto Level Control
Hi-Bit 32 Conversion
Gold Connectors
Made for iPod, iPhone Certified with USB connection
Other Features
iPhone or Android Control Application
Bluetooth® Ready (Requires AS-BT200)
Wireless LAN Ready (Requires AS-WL300)
Twin EL Transformers
2.5” Full-Color LCD Display
FM Tuner
Armored Chassis Construction (16 lbs)
High-Quality Remote
2-year Elite Warranty
Audio Formats Supp orted
WAV 192khz 24-bit
FLAC 192khz 24-bit
MP3 320kbps
WMA 320kbps
AAC 320kbps
Ogg Vorbis 320kbps
Product Specifications
Dimensions (W x H x D): 17.12 x 3.89 x 12.99 inches
Weight:  16.1 lbs

EISA 2012-2013 Sennheiser HD 700

 Sennheiser has been at the forefront of headphone development for decades, experience reflected in the engineering of its new HD 700 model. Instantly recognisable by its elegant and very modern aesthetic, this open circumaural design incorporates a wealth of materials technology. The soft velour ear pads are supported on a silicone-damped headband while the efficiency of the internal drivers is enhanced by its ventilated magnet system. Very comfortable to wear, the HD 700 maintains Sennheiser’s tradition for a tremendously detailed performance, assisted here by its proprietary angled baffles. Moreover, this model’s sound possesses a welcome richness, its naturally warm aspect encouraging long spells of listening.

Frequency response:  10-42,000 Hz
Ear coupling:  Around-the-ear
Transducer principle:  Dynamic, open-aire
Nominal Impedance:  150Ωs
Sound Pressure Level:  105 dB (1 kHz, 1 V)
Total Harmonic Distortion:  <0 .03=".03" p="p">
Jack plug:  ¼ inch (6.3mm) straight
Weight:  9.6 ounces (without cable)
Cable length:  9.8 feet
Weight:  15.75 lbs (master carton)

Cizek Model One

 The sound of Cizek,a brave new world in loudspeakers technology.
Brave, because we dared to embark on a complex journey into the center of sound. A journey destined to explore each element of sound reproduction, to seek out imperfection and institute change.
But mere change was not enough. At Cizek Audio Systems, we found it necessary to go beyond refinement to the point of creation. Creation which resulted in 8 new patents to bring you closer to sound at its source. Sound rated by the experts to be superior to loudspeakers selling for many times the price.
Yet Cizek's primary breakthrough lies in a crossover network that eclipses all others. A system so precise, so accurately formulated, that we can guarantee response specifications to withhin ±1 dB. Combined with a power handling capability of 15 to 150 watts per channel, this full range, 2-way acoustic-suspension loudspeaker yields a frequency curve that is exceptionally flat from 35 Hz - 18 kHz.
And for superior fine tuning, the Cizek loudspeaker features three individual frontal controls. These adjustments are specifically engineered to balance the sound to the acoustics of your room, simulate concert hall conditions, and incrase bass response if you so desire.
Come compare, and you'll discover our breave new world in loudspeaker technology.
Cizek - making footprints in the sounds of time.

 In our design we have minimized the diaphragm excursion of the high frequency driver in the region of crossover in order to lower distortion and increase power handling capability.
By not using a deep front edge we have minimized the effects of diffraction from the front edge terminations. We use an acoustically transparent foam grille.
To maintain a high standard of quality control, we found it necessary to design and manufacture our own 10" woofer. Incorporating a heavy 1kg (2,2 lb) ceramic magnet, this woofer produces an air-gap flux-density of approximately 13 kilogauss. For increased power handling capability, we employ a long 2-layer, 1½" (38 mm) diameter voice coil wound with #28 wire. In order to assure extended deep bass response with minimal distortion, the woofer was designed with a free-air resonance of nominally 16 Hz, so that in the total suspension stiffness is contributed by the air that is sealed inside the cabinet.
The three controls, located in the recessed panel below the woofer on the front of the loudspeaker, allow unusual flexibility. The High Frequency Contour Control (H.F.C.) is a 5-position switch which allows you to introduce a variable "rolling-off" of the high frequencies. The High Frequency Level Control (H.F.L) allows you to raise and lower the entire response of the tweeter with respect to the woofer. The Q switch allows you to change the Q from .6 to 1.
Input terminals are equipped for standard double-banana connection.

 Special Features
Cabinet is internally braced to minimuze panel resonance.
Cabinet is sealed so that we have a minimum return time of four seconds on the woofer to extend the low frequency response and minimize the adverse effects of turntable rumble.
Through a unique design our crossover combines the advantages of a first-order constant-voltage-transfer network with the advantages of higher order networks.
To avoid distortion due to core hysteresis and saturation, the crossover choke is wound air-core with 17-gauge wire.
Crossover circuit utilizes all 5% or better tolerance components.

System:  2-way acoustic suspension system
Drive units
1 x 254 (10") acoustic suspension woofer
1 x 25,4 (1") hemispherical dome tweeter
Crossover Frequency:  1,500 Hz acoustical and electrical
4,25 ohms ±.25 ohms from 100Hz to 15kHz with controls in Flat position and Q adjustment in .6 position; 7,25 ohms with Q in the 1 position
Efficiency: Average sensitivity is 88 dB at 1m with 1watt input into 4,25Ω
Minimum Power requirements:  15 watts RMS into 4Ω
Power Handling:  Up to 150 watts music power per channel
In-box Resonance:  Nominally 38 Hz
Low-frequency Response:  Flat at 38 Hz or -4 dB (dependant upon Q adjustment)
Response:  35 Hz - 17 kHz, +1½ dB, -2 dB (measured outdoors in a 2π environment)
System Q:  .6 or 1
Flux Density:  13,000 gauss (woofer); 15,000 gauss (tweeter)
Volume of Enclosure:  39,6 liters (1,4 cu ft)
Cabinet Dimensions (H x W x D):  635 x 394 x 241 mm (25" x 15½" x 9½")
Weight Net:  19,4 kg (42,8 lb)

Roy F. Cizek

Roy F. Cizek (January 29, 1943 – April 12, 1993)

 At thirty-two, Roy Cizek, inventor of the loudspeaker that had audiophiles buzzing from the advance word alone, became president of Cizek Audio Systems, Inc.
The speaker, manufactured in Newton,MA, is Roy's own - the most recent of a series he designed, built and tested after many years of research and development. For Roy Cizek is a perfectionist. A man in search for accurate reproduction of sound.
He first became interested in music when he started trumpet lessons at the age of six. Combined with an aptitude for electronics which began at 13, Roy's life became a double-track on music and electronics.
Majoring in trumpet and piano with a physics minor at the University of Indiana, he started to build speakers with his first :pro" speaker coming out during his junior year.
By 1964, he had opened a hi-fi store in Bloomington, Indiana and, with the help of an English physicist, developed a house brand. During this period, Roy's store and sound room were rated among the best in the nation.
Developing various systems between '65 and '74, Roy was admitted to MIT to study electrical engineering, when the speaker absession hit once again. ":There's just always been this 'thing' about speakers, this need to predict everything, to know a speaker intimately, and to get as close as possible to totally clean and clear concert hall sound".

According to Roy,"most engineers desgn the circuits for a speaker, build it, and then compensate for its inadequacies after listening to it. My problem was that I had been building a speaker, beginning to get the sound I was after, without being able to measure it. I couldn't predict on paper and Ididn't know why I was getting what I was getting."
In april of '76, with a physics/mathematics associate, Roy began to finalize the Cizek speaker. The two spent 80 hours a week going over the basic principles, building, measuring, researching, writing, and working equations, time and again.
And on May 30, they finally had something. Friends at a leading loudspeaker company proclaimed it "incredible", and several dealers took advance orders, sound unheard.
Roy claims that the success of the new Cizek speaker has evolved as a result of follow through on very basic principles and theories. "In any speaker thet utilizes a single woofer anda single tweeter, the key is the crossover network. Most speaker do not produce flat response over the entire sound spectrum. There are always exaggerations or depressions - distortion of some kind, somewhere -  but uniformly the trouble spot is the crossover network, the point where the woofer and tweeter join. That's the problem we finally solved."
1976 Cizek Audio Systems

Marantz Model 19

 This is simply the most expensively designed stereo receiver in the world. The Model Nineteen offers more for your money than any other receiver made today. By talking the finest FM stereo tuner, the most sophisticated of stereo preamplifiers, plus high-performance power amplifier - and blending them all into one precision machine… the Marantz Model 19 is a study in excellence. Here's why.

 The Model 19 offers 100 Watts of continuous power into 8 Ohm speaker from 20 Hz to 20 kHz. And total harmonic and intermodulation distortion is less than 0,15Z% with ± 0,25 dB frequency response. The built-in oscilloscope is a visual indicator that shows the finest tuning adjustment for perfect reception, even on the weakest stations. Also, the Marantz exclusive Gyro-Touch tuning wheel reduces friction and wear and asures optimum tuning accuracy. And there's the Variable Overlap Drive. This automatically compensates for natural aging of components, making each listening experience an openng night performance. Now, put all these exciting features behind a gold-anodized front panel with etched black lettering and frame it in sleek, hand-rubbed walnut cabinetry. And you have the Model 19 .

AM/FM Section
FM Quieting Slope
RF Input for 30 dB Quieting : 1,7 µV
Quieting at 5 µV RF Input : 55 dB
Quieting at 10 µV RF Input : 62 dB
Quieting at 50 µV RF Input : 73 dB
Total Harmonic Distortion
Mono : 0,15%
Stereo : 0,15%
Selectivity: Alternate Carrier :  80 dB
Capture Ratio:  1,5 dB
Stero Separation:  45 dB at 1 kHz
Spurious Rejection:  100 dB
Image Rejection:  85 dB
IF Rejection:  100 dB
Am Suppression:  65 dB
Pre-Amplifier Section
Phono Section
Dynamic Range (Ratio of Input Overload Voltage to Equivalent Noise):  100 dB
Equivalent Noise Input:  1,0 µV
Sensitivity /Impedance:  1,0 mV/47 kΩ
High Level Input Sensitivity/Impedance:  100 mV/100 kΩ
Tone Controls
Bass : ±15 dB at 50 Hz
Treble : ±16 dB at 15 kHz
Power Amplifier Section
Power Output:  50 Watts per channel (Continuous Power at 8Ω, at or below Rated Distortion, 20Hz - 20kHz, Both Channels Driven)
IM Distortion:  0,15% (at or below Rated Power any combination of Two Frequencies)
THD:  0,15% (at or below Rated Power, Any Frequency form 20Hz- 20kHz)
Frequency Response High Level Input, from 20Hz - 20 kHz):  0,25 dB
Power Bandwidth (IHF, Both Channels Driven):  8 - 80 kHz
Damping Factor:  80
Dimensions:  18¼" x 6" x 16"
Weight:  46 lbs

Yamaha CA-2010

 Special Features of the CA-2010
DC Power Amplification with Switched Class A and Class B Operation
The power amplifier section makes true DC performance (to zero Hz) available, featuring ultra low distortion first stage Yamaha dual-FET differential amplification, parallel push-pull circuitry and SEPP output, with choice of Class A abd Class B operation at equivalent volume levels.
Superb Phono Equalizer Amplifier
The equalizer uses specially matched Yamaha low noise FETs in a differential amplifier first stage and features complementary SEPP output stage configuration to give an S/N of 96 dB and phono dynamic range up to 310 mV and RIAA deviation within ±0,2 dB
Ultra Low Noise MC Head-Amp IC
This offers S/N comparable with that obtained by conventional equalizer amplifiers for high output MM cartridges. Switching between MC and MM cartridge is on the front panel.

 Low Noise, Low Distortion Tone Control Amp
First stage differential FET amplifier and complementary SEPP output stage in the NF-type tone controls gives extremely low noise and distortion.
Wide Range Peak-Level Meters
In addition to their calibration in dB, these meters offer independent readings of output power in Watts (for 8 Ω speakers) and of the Rec Out output
Extremely Stable Power Supply Section
Two, 22,000 μF electrolytic capacitors and massive mains transformer give stable power supplies.
A Host of Other Important Features
These include relay-operated speaker protection, improved S/N due to four-gang volume control, a full range of accessory circuits, and the functional beauty of Yamaha design.

The filters circuits of the CA-2010 offer a choice of Subsonic and High filters. Both provide very steep attenuation curves with a slope of 12 dB/octave. This sharp slope is achieved with extremely low distortion so that there is minimum degradation of tonal quality in the important mid-range frequencies.
The Subsonic Filter operating below 15 Hz prevents the amplification of ultra low frequency signals, arising from warped or eccentric records, from giving rise to cross-modulation distortion (general lack of clarity), and protects the speakers from overloads. Since the filter has virtually, no effect on audible frequencies above 25 Hz, it can be left ON permanently with no effect on normal audition.
The High Filter operates at frequencies above 10 kHz, and is used to cut out unwanted tape hiss and record scratch. It should not be used unnecessarily.

Minimum Power Output. Continuous RMS Power (both channels driven at rated 0,03% THD)
20 to 20,000 Hz : 120 W per channel into 8 Ω (Class B); 30 W per channel into 8Ω (Class A)
At 1 kHz : 125 W per channel into 8 Ω (Class B)
Signal-to-noise Ratio (IHF A network)
Phono 1 (MM), Phono 2 : 96 dB (for 10 mV, shorted)
Phono 1 (MC) : 85 dB (for 50 Ω, shorted)
Tuner, Aux : 100 dB
Main : 118 dB
Residual Noise : Less than 70 μV
Total Harmonic Distortion (20 Hz to 20 kHz)
Phono 1 (MM), 2 to Rec Out : Less than 0,003% , 5 V output
Phono 1 (MC) to Rec Out : Less than 0,03% , 3 V output
Tunerm Aux to Pre Out : Less than 0,005% , 3 V output
Main in to Sp Out
Class A : Less than 0,005% into 8Ω , 15 W
Class B : Less than 0,01% into 8Ω , 60 W
Tuner to Sp Out (Class B) : Less than 0,01% into 8 Ω , 60 W
Input Sensitivity/Impedance
Phono 1 (MM): 2mV/47, 68 ,100 kΩ
Phono 1 (MC) : 50 μV/47 kΩ
Phono 2 : 2 mV/47 kΩ
Tuner, Aux : 120 mV/50 kΩ
Main in Terminals : 1 V/50 kΩ
Output Level/Impedance
Rec Out terminals : 120 mV/600 Ω (rated); 18,6 V (max. at 1 kHz, 0,2% distortion)
Pre Out terminals : 1 V/500 Ω (rated); 7 V (max. at 1 kHz, 0,02% distortion)
Frequency Response
Phono 1, 2 RIAA deviation : ± 0,2 dB (MM/MC)
Tuner to Pre Out terminals : 5 Hz to 100 kHz, +0, -1 dB
Tuner to SP Out terminals : 5 Hz to 50 kHz, +0, -1 dB (8 Ω load)
IM Distortion : 0,03%, 250 mW to 120 W (Aux to Sp Out )
Noise-Distortion Clearance Range (0,1% THD)
Phono to Sp Out : 0,1W to 120 W (Vol at -20); 4 mW to 120 W (Vol at -40)
Damping factor at 1 kHz : Better than 45 into 8 Ω
Max Input Levels
Phono 1 (MM) , 2 : 310 mV (at 1 kHz, 0,02% distortion)
Phono 1 (MC) : 7,5 mV (at 1 kHz, 0,02% distortion)
Tuner, Aux : 20 V (at 1 kHz, 0,02% distortion)
Power Bandwidth into 8 Ω, 0,03% distortion
Class A operation : 10 Hz to 70 kHz (15 W output)
Class B operation : 10 Hz to 50 kHz (60 W output)
Subsonic : fc = 15 Hz, -12 dB/octave
High : fc =10 kHz, -12 dB/octave
Tone control characteristics
Bass Turnover frequencies : 125 Hz and 500 Hz
Bass Boost/Cut : ±10 dB at 20 Hz (for 500 Hz)
Treble Turnover frequencies : 2,5 kHz and 8 kHz
Treble Boost/Cut : ±10 dB at 20 kHz (for 2,5 kHz)
Rise Time : 100 μsec
Decay Time : 0,95 sec
Meter Range : -50 dB to +5 dB (1 mW to 316 W into 8 Ω)
Power Supplies: AC 120 V, 50 Hz (USA); AC 110 -130, 220 - 240 V 50/60 Hz (other)
Power Consumption (nominal): 450 W 550 VA (USA); 900 W (other)
Dimensions (W x H x D): 461 x 170 x 360 mm (18-1/8” x 6-11/16” x 14-2/5”)
Weight: 20 kg (44 lbs)

Fisher HP-50

 Mayby you think that only way to experience Fisher quality is by paying a few hundred dollars. For a Fisher receiver or Fisher speakers, say.
But here's a genuine Fisher that cost just $29.95
And we recommend it to anyone who wants an introduction to what we do.
HP-50's are the best stereo headphones we know how to make. They're designed to reproduce natural sound with no compromise in comfort or convenience.
The foam-cushioned ear cups are made of high-impact Cyclolac plastic; the headband is fully adjustable.

HP-50 headphones are designed to complement the superlative acoustic characteristics of all fine Fisher high fidelity instruments. They provide absolute fidelity to the listening program, and offer all the comfort and convenience of privade listening enjoyment.

Physical Specifications
Connections made to left cup via single 6½-foot cable terminated in three-contact plug.
All wires are strain-relieved.
Full foam-cushioned cups, of high -impact plastic (Cyclolac)
Fully-adjustable vinyk-covered spring-steel headband.

Electrical Specifications
Frequency Response:  30 - 17,000 cps
Distortion:  Unmeasurable at normal listening levels
Power Input (required for average listening levels;  15 milliwatts
Maximum permissible Power Input:  1 watt
Nominal Impedance:  12 ohms

B&W DM 220

DM220 Stand-mount/Bookshelf loudspeaker system
Your Digital Monitor system was designed and made by B&W, the British manufacturer whose loudspeakers are used by the leading recording companies worldwide to monitor digital recording sessions.
It is 3-way system of quite exceptional sensitivity. Other characteristics are broad linear frequency response and excellent transient performance, even at very high sound pressure levels.

 Product Summary
All the distinctive qualities of the DM110 with a third driver extending both frequencies response and power handling.
Total spectrum capability – pop, jazz, rock or classical.  And of course the benefits of B&W’s advanced optimisation techniques in the design enclosure. Alvin Gold said “the sense of vividness and expressive nature of the 220 is further proof that B&W have got most of the
right answers”

 Technical highlights
Refinements in the enclosure give the DM series reduced in lower mid-band coloration and a dramatic improvement in transient response.  Advanced optimisation techniques employing modal analysis of the cabinet structure were a design feature of the enclosure in all four monitors.

Drive Units:
1 x 26mm dome/coil construction of special polymide material
2 x 200mm nominal piston dia and 26mm high temperature voice coil with critically impregnated composite short fibre cone
Frequency Response:  ± 3dB 53Hz to 20kHz
Sensitivity:  90dB (2.83V, 1m
Power Handling:  10W – 100W
Dimensions (H x W x D): 680 x 290 x 320 mm
Finish:  American Walnut or Black Ash viny

C.E.C. Chuo Denki ST-130

 Direct-Drive Automatic Turntable ST130
Turntable rotational acuracy achieved in the ST 130 is attributed to the 20-pole 30-slot direct drive motor. Rumble has been almost eliminated. Wow and fluter have also been greatly reduced. The body designs is very compact with front operation.

Direct-Dive Motor
The high performance DD motor has been manufactured with precision and accuracy to provide unswerving rotational accuracy. The DD method provides motor-platter marriages for perfection in drive.

Acoustic Feedback Reduction
Acoustic feedback is almost eliminated with the original independent suspension design. A design based on vibreation damping cushions and balanced steel springs isolates the cabinet assembly from outside vibration influences.

 Oil-Damped Cueing
When the needle is placed on the record, an original iol damping mechanism makes the contact gently. No more damage to your records at cueing time.

Low Mass Straight Tonearm
A low mass straight tonearm with resonant frequency matching assures accurate tracking and gentle care for your delicate records.

Auto Return and Auto Shutoff
The tonearm is also automatically returned to rest and power turned off at the end of play.This feature frees you to enjoy play without worrying about the end of the rcord.

Pitch Control
A pitch control is incorporated to permit adjustments for the sensitive ear. Now you can play or sing along with your favorite recorded pieces without the noticeable difference in pitch.

Motor:  20-pole, 30-slott, 3-phase brushless type DC servo controlled direct drive motor
Speeds: 33 and 45  r.p.m.
Speed Calibration:  Pitch control ±3%
Wow & Flutter:  0,055% (WRMS),  ±0,085% (DIN 45507)
Unweighted : 38 dB (DIN 45539A)
Weighted : 65 dB (DIN 45539B)
Turntable platter:  308 mm aluminium alloy die-cast with strobe outside rim
Tonearm:  Straight-line tubular, static balance type with removable headshell and antiskating device
Effective lenght:  222 mm
Overhang:  16,8 mm
Adjustable tracking force:  0 - 2,5 g with direct readout weight
Usable cartridge weight:  4 - 6,5 g
Cartridge (optional):  Moving Magnet type, model MM3 with 0,6 mil diamond stylus
Frequency response:  20 -20,000 Hz
Output voltage:  3 mV ±3 dB at 1 kHz  3,54 cm/sec
Channel balance:  Within 2 dB at 1 kHz
Channel separation:  More than 18 dB at 1 kHz
Load resistance:  47 Kohm
Weight:  4,6 g
Optimum stylus force:  1,8 g
Automatic functions:  Automatic return and shutoff
Power source:  120V 60 Hz for North America,220 V 50 Hz for Europe
Power consumption:  6 watts
Dimensions:  420 x 121 x 365 mm (W x H x D)
Weight:  4,5 kg (nett)