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





NAD 402 Tuner


The Model 402 embodies NAD's conviction that convenience, flexibility, and ease of use can be achieved with absolutely no compromise in sound quality. The 402 has AM and FM; preset distortion-free tuning for 60 radio stations

60 Presets 30 AM and 30  FM radio stations
NAD-Link Connectors allow control to and from other units
Blend facility to reduce noise at low signal strengths
75 Ω coax antenna connector
Lock facility to automatically tune precisely onto a station
Three separate modes of tuning with 25 kHz accuracy

Flexible Tuning
The 402 has three convenient tuning modes:
Search: Scans rapidly up or down in frequency, stopping automatically at the next strong station.
Preset: Up to 30 FM and 30 AM station frequencies can be stored in memory and instantly recalled. The "non-volatile" memory needs no battery or other power; frequencies are retained during power outages, even if you unplug the receiver for weeks at a time.
Tune: Dual-resolution tuning lets you scan rapidly through the broadcast band (with constant pressure on an up/down tuning button), or fine-tune in small 0,025 MHz steps by tapping on the buttons. This lets you optimise the reception of a weak station adjacent to a strong one.

Sensitive Digital Tuning
Precise digital frequency-synthesis circuits guarantee that each station is tuned with crystal-controlled accuracy. A dual-gate MOSFET FM circuit pulls in weak stations clearly but resists overloading on strong signals. A balanced quadrature detector provides consistently low distortion, even with over-modulated broadcasts. The composite stereo signal is phase-compensated to guarantee wide stereo separation at all frequencies, not just in the midrange.

Sharp selectivity, low noise
Linear-phase ceramic filters in the I.F. circuit provide an ideal combination of sharp selectivity and minimum distortion. Low-loss design gives the optimum signal level to the PLL MPX decoder, yielding a signal-to-noise ratio of nearly 75 dB with strong signals. So with local stations the ultimate stereo guieting is limited not by the receiver but the station itself.

Specifications
FM Tuner Section
Input Sensitivity:
Mono (-30 dB T.H.D.+N) :  1,3 dBf (1,0 µV/75 Ω)
Mono (-50 dB SN) :  15 dBf (1,5 µV/75 Ω)
Stereo (50 dB SN) :  37 dBf (20 µV/75 Ω)
Stereo (60 dB SN) :  47 dBf (60 µV/75 Ω)
Capture Ratio:  less than 1,6 dB (45 to 65 dBf)
AM Rejection:  more than 60 dB (45 to 65 dBf)
Selectivity: 
Alternate Channel:  58 dB
Image Rejection:  70 dB
RF. Intermodulation:  60 dB
I.F. rejection:  90 dB
Subcarrier Suppression:  60 dB (19 and 38 kHz)
T.H.D. at 100% Modulation
Mono (1 kHz):  0,1%
Mono (100 Hz - 6 kHz) :  0,2%
Stereo (1 kHz) :  0,1%
Stereo (100 Hz -6 kHz) :  0,3%
Signal-to-Noise Ratio (at 65 dBf, IHF weighted)
Mono :  better than 80 dB
Stereo :  better than 74 dB
Frequency Response 30 Hz - 15 kHz:  ±0,5 dB
Stereo Separation:
1 kHz :  45 dB
30 Hz - 10 kHz :  35 dB
AM Tuner Section
Usable Sensitivity:  5 µV
Selectivity:  30 dB
Image Rejection:  45 dB
I.F. rejection:  35 dB
Signal-to-Noise Ratio (30% modulation, 50 mv Input):  45 dB
Total Harmonic Distortion:  0,5%
Physical Specifications
Power Ratting:   120,, 220 0r 240 V, 50/60 Hz
Power Consumption:  150 W
Dimensions (W x H x D):  420 x 91 x 273 mm
Weight [net/shipping}:  6 kg/7,1 kg

NAD 4020A Tuner

The NAD 4020A is a rationally designed and built, at moderate price,  AM/FM tuner, whose performance in most locations and with most broadcasts is audibly identical to that of many more expensive  and elaborate tuners. The 4020's quality of sound is limited only by the quality of the transmitted broadcast.
Recent dramatic advances in FM tuner circuitry, particularly in the development of inexpensive but high-performance "building block" circuit modules, have been incorporated in the 4020A to provide excellent sound at reasonable price.

Such crucial design parameters as sensitivity, low distortion and wide stereo separation have been given priority over the inclusion of costly superfluous features and esoteric circuitry whose benefits are totally inaudible except in rxtreme reception conditions. But no compromises whatsoever have been made in those performance areas which relate directly to the 4020's listening quality in normal and even somewhat difficult reception locations.
High Sensitivity
The "front end" tuning circuit, for example, employs a Junction FET amplifier, for an optimum combination of sensitivity to weak signals and resistance to cross - modulation from strong signals. The intermediate frequency (I.F.) amplifier, a high-gain IC, provides excellent limiting (static suppression), very good AM rejection (suppression of multipath interference), and smooth muting of interstation noise.
Low Distortion
While budget-price tuners commonly contain one or two ceramic I.F. filters, the NAD 4020A employs a total of three. Their sharp selectivity minimises interference from adjacent stations on the increasingly crowded FM dial, and their linear-phase respponse contributes to minimum distortion of stereo broadcasts. Multiplex stereo decoding is performed by the latest phase-locked loop (PLL) IC. In addition to low noise and wide stereo separation, the PLL decoder yields the lowest distortion in stereo reception - in particular, minimum inter-modulation between high audio frequencies and the 19 kHz stereo pilot tone.
Wide Stereo Separation
It is important to maintain wide stereo separation at low and high frequencies as well as the commonly specified 1 kHz midrange point. In the 4020A phase shift of the composite signal is minimised in order to preserve full low-frequency separation, and a special NAD phase-compensated crosstalk cancellation circuit increases high-frequency separation and minimises any residual distortion.
Instead of a costly and fragile moving-coil tuning meter the 4020A has a set of three LED indicator lights which form a remarkably simple and accurate meter. Either of two amber LEDs illuminates when the 4020A is mistuned to either side of a station frequency, and a green LED illuminates when the station is optimally tuned for minimum distortion 9within 0,025 MHz). The brightness of the green tuning LED indicates the signal strength, when it is dim the station is too weak for optimum reception.

For the music lover seeking uncompromised performance for a modest investment, the NAD 4020A is the logical choice. There are more costly tuners available, some of which have more impressive specifications,, but very few sound better in everyday use.
Specifications
FM Tuner Section
Input Sensitivity
Mono -30db Total Harmonic Distortion+N :  10,9 dBf (1,9 µV/75 Ω)
Mono 50 dB S/N :  16 dBf (3,5 µV/75 Ω)
Stereo 50 dB S/N :  37 dBf (40 µV/75 Ω)
Capture ratio :  1,5 dB (45 - 65 dBf)
AM Rejection:  60 dB (45 - 65 dBf)
Selectivity:  65 dB
Image Rejection:  50 dB
IF Rejection:  75 dB
Harmonic Distortion:
Mono :  0,2%
Stereo :  0,3%
Signal-to-Noise Ratio:
Mono :  75 dB
Stereo :  70 dB
Frequency Response:  30 Hz - 15 kHz ±0,5 dB
Channel Separation:  42 dB (at 1 kHz)
AM Tuner Section
Usable Sensitivity:  250 µV
Selectivity:  30 dB
Image Rejection:  50 dB
IF Rejection:  40 dB
Other
Power Rating:  220 V, 50 Hz   or 110 V, 60 Hz
Dimensions (W x H x D):  420 x 96 x 240 mm
Weight [Net/Shipping]:  4,2 kg / 5,6 kg

Boston Acoustic A70


In a stereo system, the loudspeakers are the key components. Because they are devices that you hear, the system can never be better than they are, if your speakers are less than excellent, accuracy will suffer, and so can your enjoyment.
The Boston Acoustic A70 is a highly accurate reproducer of music. In addition to faithfully recreating the full audible range of music, the A70 can image more accurately than most speakers offered at any price.

An accurate stereo image increases realism.
When you listen to a stereo system, close your eyes, and find out whether your mind's eye can "see" where each instrument is located.
Boston Acoustic speakers are well-known for their ability to recreate an accurate stereo image that increases realism and enjoyment. The slim profile of the A70 not only makes it easier for you to place the speaker unobtrusively in a room; more important from a music lover's point of view, the dimensions of the cabinet minimize unwanted sounds that would ordinarily muddy the stereo picture. The result is a crisp focused image.
Another characteristic that contributes to good imaging is a tweeter that's matched to the woofer in terms of its radiation pattern. A limitation of ordinary tweetere is that they radiate sound forward in a tight pattern, like a flash-light radiates light. In contrast, all woofers radiate over a broad area,like a table lamp. The tweeter incorporated in the A70 radiates in a very broad pattern, making the woofer and tweeter a well-matched team. Hence, the stereo image is clear and distinct.

The best combination of range and accuracy inn its price class.
The A70 maintaining the correct proportion while reaching farther into the bass than any other speaker in its price class. The quality of the drivers is largely responsible. The tweeter is the same one we use in most expensive nodel. The woofer is a helfty 8-inch driver designed to providethe best combinationof deep bass and efficiency. It reproduces the lowest notes in music - notes that most listeners never heat, except in live performances.

A room-size sound from as little as 15 watts
With very little  power, the sound of two A70 speakers will fill an average size room to overfloving. The A70 performs well with a receiver or amplifier as low as 15 watts per channel. Its efficiency means you can spend less money on your receiver or amplifier, and get excellent performance.

Specifications:
Frequency Response:  40 - 25,000 Hz ±3 dB
Impedance:  6 ohms nominal
Sensitivity:  1 watt produces 90 dB at 1 meter
Drivers:
Low-Frequency :  200 mm (8") long throw woofer with focused gap magnet assembly for low distortion
High-Frequency :  25 mm (1") soft dome tweeter with ferrofluid cooling
Crossover Frequency:   2000 Hz
Recommended Amplifier Power:  15 to 75 watts per channel
Power Rating:  75 watts nominal;  150 watts peak
Internal Volume:  28 liters
Cabinet Finish:  wood grain vinyl finish over non-resonant particle board
Dimensiond (W x H x D):  356 x  610 x 203 mm (14" x 24" x 8")
Weight:  11,8 kg (26 lbs)

Creek CD43


Creek compact disc player CD43 Features:
Infra-red remote control
High precision 24 bit, ΔΣ digital to analogue conversion
128 FS filter
3-beam optical laser pick up
16 program memory
LCD display - back lit green
Shuffle fnction ( random selection)
Repeat facility
Intro scan facility
Auto space facility

Specifications:
Frequency Response:  1 Hz - 20 kHz ±0,5 dB
Output Level :  2,2 V RMS at 1 kHz
Output Impedance :  600 Ω, min. Load 10 k Ω
Laser Type:  Semiconductor ALGaAs
Wavelenght:  790 nm ±25 nm
Light Output (cw):  0,18 mW typical
Signal-to-Noise Ratio:  better than 96 dB
Dynamic Range:  better than 100 dB
Number of Channels :  2
Total Harmonic Distortion:  less than 0,01% at 1 kHz
Power Requirements:  AC 220-240 V 50 Hz or AC 110-120 V 60 HZ
Power Fuse Rating:  T 250 mA or T 500 mA
Power Consumption:  15 Watts max

Dimensions (W x H x D):  420 x 70 x 289 mm

Creek 4240


The Creek 4240 is an Integrated Amplifier of the highest caliber, designed and manufactured inthe U.K. the 42 40 employs exclusive and novel circuit techniques believed by its elegantly simple appearance. The 4240 is the new benchmark for integrated  sound and value. With the 4240, Creek engineers used CAD (Computer Aided Design) to update the classic Creek 4040 and 41 40. you have complete control of your system through four line inputs plus a tape loop. A high quality creek phono stage (MM or MC) is an optional add-on for playback of conventional records.
External connections for access to the preamp or power amp stages provide unique possibilities. You can bi-amp your speakers by adding the matching Creek A42 power amp. Two pairs of  4 mm speaker sockets provide switched output when headphones are used, or direct output.  Jointly, the double connections make bi-wiring extremely convenient.

The superior sound quality of the 4240 comes from numerous design techniques including DC coupling of its preamp and power amp. This is achieved by removing all sound degrading capacitors from the signal path and using advanced DC servo circuitry. MOS-FET driver and output power transistors insure a high level of performance and reliability not found at this price.
With the 4240 Creek continues to prove that accurate, full bodied sound caan be truly affordable.

Specifications
Power Output:
Both chanels driven :  40 Watts into 8 Ω
One channel :  45 Watts into 8 Ω
Total Harmonic Distortion:  less than 0,03% (20 Hz - 20 kHz)
Frequency Response:  3 Hz to 25 kHz -1 dB
Power Amp Rise Time:  +40 -30V's per µS
Input Sensitivity: 
Line On  :  380 mV
Signal-to-Noise Ratio:  -105 dB
Separation:  -80 dB at 1 kHz
Plug-In MM and MC Circuit:
MM Sensitivity and Impedance:  2,5 mV's / 47 k Ω
MC Sensitivity:  0,65 µV's / 1 kohm
MM Signal-to-Noise Ratio:  -70 dB
Power Consumption :
At aIdle :  40 Watts
At Full Power:  200 Watts (10% Total Harmonic Distortion)
Dimensions (W x H x D):  420 x 60 x 230 mm (16.5" x 2,4" x 9")
Weight:  4,5 kg ( 10 lbs)

JVC TD-W303

Full-Logic Control Double-Mechanism Cassette Deck

Features:
Two tape transports, one for recording and playback and other for playback
Computer-controlled full-logic control
Auto DDRP
Continuous play of two tapes
High-speed editing with synchro dubbing
Dolby B/C noise reduction system
Auto tape selector
LED multi-peak level indicators
Auto/synchro rec mute
Headphone output

Specifications
Frequency Response at -20 VU:
Metal Tape :  30 - 16,000 Hz (40 - 15,000 Hz ±3 dB)
SA/Chrome Tape :  30 - 16,000 Hz (40 - 15,000 Hz ±3 dB)
Normal tape :  30 - 15,000 Hz (40 - 14,000 Hz ±3 dB)
Signal-to-Noise Ratio:  58 dB (Metal Tape)
Wow and Flutter:  0,08% (WRMS)
Crosstalk (at 1 kHz):  60 dB
Channel Separation (at 1 kHz):  40 dB
Total Harmonic Distortion:  1,0% (Metal tape)
Heads
Record/Playback :  Metaperm head (Deck A, B)
Erase :  Two-gap ferrite head
Input Sensitivity/ Impedance:
Line IN :  80 mV/ 50 k Ω
Output Level/ Impedance:
Line Out :  300 mV/ 5 k Ω
Headphones:  0,3 W/ 8 Ω
Dimensions (W x H x D):  435 x 123 x 288 mm ( 17-3/16" x 4-7/8" x 11-3/8")

Weight: 4,3 kg ( 9,5 lbs)

Onkyo TA-RW66


The TA-RW66 is a highly versatile double cassette deck with auto reverse, automatic tape selection and Onkyo's superbly engineered soft touch mechanism. Along with these single deck features the system offers a choice of dubbing at regular or high speed. So wheter you're recording from a broadcast, compact disc or other source, this double cassette system makes your recording foolproof and easy.

Two cassette transport and auto reverse.
The TA-RW66 is two cassette deck in one unit that allows you to enjoy all the recording and playback features of a single stereo cassette tape deck with the added convenience of a second tape transport system that makes dubbing and other tape editing tasks a breeze. Tape-1 has both recording and playback capabilities. Tape-2 is for playback only with auto reverse so the listener can set  the controls for playback of one side both sides of a tape

High and Normall Speed Dubbing
To save time, the TA-RW66 has a high speed dubbing function that cuts waiting time in half. When copying both sides of a C-60 cassette, for example, only 30 minutes is needed. A dubbing selection switch allows you to choose between normal or high sped dubbing.

Unitized Die-Cast Head Mount
Many audiophiles feel auto-reverse decks are inferior to uni-directional decks because of the small difference in sound quality between the forward and rverse tape transport directions. Whit the TA-RW66, however, this is no longer a problem. Onkyo guarantees virtually identical frequency response and other specifications in both directions by mounting the rec/pb and erase heads on a precision-made die-cast block with dual azimuth adjustment.

Automatic Tape Selection
With the automatic tape selection ystem in Cassette 2, the deck itself automatically detects the type of tape inserted and adjust the bias current accordingly. So guesswork and the chance of forgetting to adjust the bias setting and spoiling your recording are eliminated. Of course, Cassette 1 has  its own tape selector to allow dubbing of two different types of tape.

Specificaations
Track Format:  4-tracks, 2-channels
Erase System:  AC erase
FF and Rewind Time:  90 sec. (C-60)
Wow and Flutter:  0,07% (WRMS)
Frequency Response:
Metal Tape :  20 - 17,000 Hz (30 - 16,000 Hz ±3 dB)
High Position Tape :   20 - 16,000 Hz (30 - 15,000 Hz ±3 dB)
Normal tape :   20 - 15,000 Hz (30 - 14,000 Hz ±3 dB)
Signal-to-Noise Ratio:  58 dB (Metal, Dolby NR Out)
Inputs:
Line In Jacks :  2
Input Sensitivity :  60 mV
Input Impedance :  50 k Ω
Outputs:
Line Out Jacks :  2
Standard Output level :  500 mV ( 0 dB)
Optimum Load Impedance :  more than 50 k Ω
Headphone Jack : 1
Optimum Load Impedance :  8 - 200 Ω
Motors :  2 motor system DC servo motor x 2
Heads:
Rec/PB :  Special hard permalloy x 2
Erease :  Ferrite x 1
Power Supply Rating:
AC 120 V 60 Hz; AC 220 V 50 Hz; AC 240 V 50 Hz; AC 120/220 V switchable 50/60 Hz
Dimensions (W x H x D):  435 x 112 x 258 mm (17-1/8" x 4-3/4" x 10-1/8")

Weight:  5,3 kg (11,7 lbs)

Pioneer HPM-60

 Clearly Defined Image Projection from 60 watt. 4-way, 4-speaker Bass-reflex System with Carbon Fiber Blended Woofer and High Polymer Supertweeter.

When a speaker system as unusually well designed as the Pioneer HPM-60 goes to work, the meaning of musical "realism" is well beyond words. Pioneer's success with the unique woofer cone material called "Carbon Fiber Blend" is now well known throughout the high fidelity world, as is the Pioneer development of a High Polymer Supertweeter that ends narrow-beam tweeter directionality and assures a more natural, cleaner high-end reproduction. Both these remarkable innovations and more besides are included in the 4-way, 4-speaker HPM-60 system.
They contribute to very clearly defined sound image projection for the most realistic musical reproduction Pioneer's technical knowhow has yet achieved in such a compact, attractively priced system.

Special features, level Controls.
Individual controls are provided for the Mid and High frequency ranges, and when set at "0" a suggested output characteristic is obtained. Turning either control clockwise  increases the output from that speaker, while turning fully counter clockwise reduces the output to zero.
Specifications
Enclosure:  book-shelf style, Bass-reflex type
System:  4-speaker, 4-way
Loudspeakers:
Woofer :  250 mm (10") cone type, carbonfiber cone
Mid-range :  100 mm (4") cone type
Tweeter :  45 mm (1-3/4") cone type
Super tweeter :  High-polymer type
Nominal Impedance:  8 Ω
Frequency Range:  35 - 25,000 Hz
Sensitivity:  92,5 dB/1W/1m
Maximum Input Power:  60 W
Rated Input Power:  30 W
Crossover Frequency:  3,000 Hz, 4,000 Hz, 12,000 Hz
External Dimensions (W x H x D):  350 x 610 x 321 mm ( 13-25/32" x 24" x 12-5/8")
Weight:  17,5 kg (38 lb 8 oz)


Yamaha CT-400 tuner


Yamaha CT400
High-performance FM/AM stereo tuner featuring output level control, noise-cutting Blend control and clean, simplicity styling.

Make the move to uncompromising component performance - without expensive extra frills.
The CT-400 offers years of clear, low-distortion AM and FM stereo reception to blend with the finest audio system. At the same time it's a masterpiece of no-fuss operation and clean decorator styling.

Sensitivity. This is the ability to pull in signals-  even weak ones. The CT-400's superb 2,0 µV (IHF) sensitivity comes from an FET-equipped FM front end, a type usually reserved for the most expensive equipment.
 Selectivity. The CT-400 easily homes in on the station you tune, excluding nearby interference with an outstanding 75 dB selectivity. This is assured by an FM IF stage incorporating no less than six special ceramic filters.
 Separation. The CT-400's clear, rich FM stereo depth is provided by an excellent 40 dB (400 Hz) stereo channel separation. The secret is a unique balanced differential type multiplex demodulator featuring integrated circuitry.

Specifications
FM Tuner Section
Usable Sensitivity:  2,0 µV
Image Response Ratio (84 MHz):  55 dB
IF Response Ratio (84 MHz):  75 dB
Spurious Response Ratio (84 MHz):  75 dB
Capture Ratio:  1,5 dB
Effective Selectivity (IHF):  75 dB
Signal-to-Noise Ratio:
Mono :  70 dB
Stereo :  66 dB
Total Harmonic Distortion (400 Hz):
Mono :  0,3%
Stereo:  0,5%
Stereo Separation (400 Hz):  40 dB
Frequency Response:  20 Hz to 14 kHz, +1,5 dB, -3 dB
Subcarrier Suppression Ratio:  40 dB
AM Tuner Section
Usable Sensitivity (IHF, bar antenna):  52 dB/m
Selectivity (1000 kHz):  25 dB
General Section
Power Supply:  AC 100-120V, 220-240V, 50/60 Hz
Power Consumption:  2,6 W (100V)
Dimensions (W x H x D):  436 x 144 x 300 mm
Weight:  5,0 kg

Marantz RS 3559


Marantz Century series receivers reach new heights of flexibility and capability in home entertainment components. These multi-mode receivers can reproduce stereo music with subtle, delicate realism. With the transparency that Marantz is so well known for. Yet they can do far more.
All three Century receivers feature system remote control, four power amplifiers ( five on RS-3559), high-current amplifier design, oversized power transformers, illuminated alphanumeric display centers, station name display, preset scan, and are compatible with future standards for residential BUS remote control systems. And the RS-3359 features video sharpness control and video dubbing;
Superscope FX sound, which brings to the home music listening and theatre experiences a highly effective combination of technologies Dolby Surround Pro Logic with its highly effective logic steering, rear effects channels, and center dialogue channel. Digital delay to create a feeling of environmental spaciousness. Subwoofer capability to provide a solid foundation to the sound. And side-fill channels, for a heigh tened sense of realism.

The RS-3559 is equipped with Marantz unique Thermal tunnel, that keeps the receiver sounding open and transparent at all power levels. In traditional power amplifier designs, sound deteriorates when output transistors heat beyond their efficient thermal operating range. With standard technology heat  sinks cannot dissipate heat as fast as transitor temperatures rise under high power conditions. The thermal tunnel solves this problem by using assisted convection cooling under thermostatic control. At low power levels the thermal tunnel functions as a normal heat sink. As power dissipation rises, the thermal feedback system informs the master control circuitry, which operates a low-speed high-volume air circulator to accelerate cooling within the tunnel. As temperature rises, the circulation speed increases, keeping the output transistors in their ideal thermal range, for lowest distortion under all conditions.
The new Century series receivers Complete. Sophisticated. Flexible. Elegant transparent sound that's picture perfect.

RS-3559 Features:
Alphanumeric information center simplifies receiver operation, displaying key operating modes and information at all times.
CD Direct switch instantly bypasses signal processing circuitry for maximu signal purity with compact discs.
Preset scan lets you sample up to 30 stations, each for a few seconds.
Available in black or gold finish with rosewood side pnels.
Five independent power amplifiers, Superscope FX sound system featuring Dolby ProLogic
Patented thermal tunnel technology combines with industrial-grade oversized power transformer for high current capability.
Acoustic variable Space Enhanement digital delay system for concert hall realism.
64-key remote control for fingertip operation of major functions of receiver and other Century Collection components.
Can memorize up to 30 tuner preset stations in three multiscan banks.
Multi scan tuner library permits presets to be grouped, recalled, and scanned in three individual groups, so each member of the family can have individualized station memories.
Three video inputs, each with composite video plus stereo audio or RF input.

Electronically calibrated precision tone controls adjust bass, midrange, treble.

Specifications RS-3559
Rated Power Output (minimum contiuous watts/channel, from 2 Hz to 20 kHz, both channel driven into 8 Ω):  125 W
Total Harmonic Distortion (at rated power, from 20 Hz to 20 kHz):  0,02%
Intermodulation Distortion (at rated power):  0,02%
Rear Channel Output Power:  20 W
Center Channel Output Power:  20 W
Phono Preamplifier:
Frequency Response, RIAA Deviation, (from 20 Hz to 20 kHz):  ±0,5 dB
Signal-to-Noise Ratio:  75 dB (A-weighted)
Input Sensitivity (for rated power):  2,5 mV
High Level Inputs:
Frequency Response (from 20 Hz to 70 kHz):  +1 dB, -3 dB
Signal-to-Noise Ratio:  95 dB (A-weighted)
Input Sensitivity
For Rated Output Power, except CD:  150 mV
For Rated Output Power, for CD:  200 mV
Tone Controls at 100 Hz and 10 kHz:  ±8 dB
FM Section
Usable Sensitivity Mono:  11,2 dBf
50 dB Quieting [Mono/Stereo]:  12/38 dBf
Signal-to-Noise Ratio at 65 dBf [Mono/Stereo]:  76/70 dBf
Total Harmonic Distortion at 65 dBf, 1000 Hz [Mono/Stereo]:  0,15 / 0,3%
Stereo Separation, at 1000 Hz:  45 dB
Capture Ratio:  1,5 dB
Frequency Response  (from 30 Hz to 15 kHz):  1 dB - 3 dB
AM Section
Usable Sensitivty:  55 dB/m
Signal-to-Noise  Ratio:  45 dB
Image Rejection:  40 dB
Selectivity:  20 dB
Dimensions (W x H x D):  16-15/16" x 16-5/8" x 5-15/16"
Weight:  32,71 lbs

Marantz SR-3557

RS-3557 Features:
Alphanumeric information center simplifies receiver operation, displaying key operating modes and information at all times.
CD Direct switch instantly bypasses signal processing circuitry for maximu signal purity with compact discs.
Preset scan lets you sample up to 30 stations, each for a few seconds.
Available in black or gold finish with rosewood side pnels.
Four independent power amplifiers,
Superscope FX sound system featuring Dolby ProLogic
44-key remote control for fingertip operation of major functions of receiver and other Century Collection components.
Can memorize up to 30 tuner preset stations in three multiscan banks.
Multi scan tuner library permits presets to be grouped, recalled, and scanned in three individual groups, so each member of the family can have individualized station memories.
Two video inputs, each with composite video plus stereo audio or RF input.
Electronically calibrated precision tone controls adjust bass, midrange, treble.


Specifications RS-3557
Rated Power Output (minimum contiuous watts/channel, from 2 Hz to 20 kHz, both channel driven into 8 Ω):  100 W
Total Harmonic Distortion (at rated power, from 20 Hz to 20 kHz):  0,03%
Intermodulation Distortion (at rated power):  0,03%
Rear Channel Output Power:  20 W
Phono Preamplifier:
Frequency Response, RIAA Deviation, (from 20 Hz to 20 kHz):  ±0,5 dB
Signal-to-Noise Ratio:  75 dB (A-weighted)
Input Sensitivity (for rated power):  2,5 mV
High Level Inputs:
Frequency Response (from 20 Hz to 70 kHz):  +1 dB, -3 dB
Signal-to-Noise Ratio:  95 dB (A-weighted)
Input Sensitivity
For Rated Output Power, except CD:  150 mV
For Rated Output Power, for CD:  200 mV
Tone Controls at 100 Hz and 10 kHz:  ±8 dB
FM Section
Usable Sensitivity Mono:  11,2 dBf
50 dB Quieting [Mono/Stereo]:  12/38 dBf
Signal-to-Noise Ratio at 65 dBf [Mono/Stereo]:  76/70 dBf
Total Harmonic Distortion at 65 dBf, 1000 Hz [Mono/Stereo]:  0,15 / 0,3%
Stereo Separation, at 1000 Hz:  45 dB
Capture Ratio:  1,5 dB
Frequency Response  (from 30 Hz to 15 kHz):  1 dB - 3 dB
AM Section
Usable Sensitivty:  55 dB/m
Signal-to-Noise  Ratio:  45 dB
Image Rejection:  40 dB
Selectivity:  20 dB
Dimensions (W x H x D):  16-15/16" x 16-5/8" x 5-15/16"
Weight:  32,21 lbs

Marantz SR-3555

 Marantz Century eries Receivers reach new heights of flexibility and capability in home entertainment components.

RS-3555 Features:
Alphanumeric information center simplifies receiver operation, displaying key operating modes and information at all times.
CD Direct switch instantly bypasses signal processing circuitry for maximu signal purity with compact discs.
Preset scan lets you sample up to 30 stations, each for a few seconds.
Available in black or gold finish with rosewood side pnels.
Four independent power amplifiers,
Active surround sound system.
36-key remote control for fingertip operation of major functions of receiver and other Century Collection components.
One video inputs, each with composite video plus stereo audio or RF input.

Electronically calibrated precision tone controls adjust bass, midrange, treble.

Specifications RS-3555
Rated Power Output (minimum contiuous watts/channel, from 2 Hz to 20 kHz, both channel driven into 8 Ω):  50 W
Total Harmonic Distortion (at rated power, from 20 Hz to 20 kHz):  0,04%
Intermodulation Distortion (at rated power):  0,04%
Rear Channel Output Power:  20 W
Phono Preamplifier:
Frequency Response, RIAA Deviation, (from 20 Hz to 20 kHz):  ±0,5 dB
Signal-to-Noise Ratio:  75 dB (A-weighted)
Input Sensitivity (for rated power):  2,5 mV
High Level Inputs:
Frequency Response (from 20 Hz to 70 kHz):  +1 dB, -3 dB
Signal-to-Noise Ratio:  95 dB (A-weighted)
Input Sensitivity
For Rated Output Power, except CD:  150 mV
For Rated Output Power, for CD:  200 mV
Tone Controls at 100 Hz and 10 kHz:  ±8 dB
FM Section
Usable Sensitivity Mono:  11,2 dBf
50 dB Quieting [Mono/Stereo]:  12/38 dBf
Signal-to-Noise Ratio at 65 dBf [Mono/Stereo]:  76/70 dBf
Total Harmonic Distortion at 65 dBf, 1000 Hz [Mono/Stereo]:  0,15 / 0,3%
Stereo Separation, at 1000 Hz:  45 dB
Capture Ratio:  1,5 dB
Frequency Response  (from 30 Hz to 15 kHz):  1 dB - 3 dB
AM Section
Usable Sensitivty:  55 dB/m
Signal-to-Noise  Ratio:  45 dB
Image Rejection:  40 dB
Selectivity:  20 dB
Dimensions (W x H x D):  16-15/16" x 16-5/8" x 5-15/16"
Weight:  28,71 lbs


Technics SU-800

SU-800 Stereo Integrated Amplifier
Features:
New Class A circuitry for clear, undistorted sound;
40 W x 2 RMS (20 Hz - 20 kHz at 8 Ω);
Light-touch input selectors include phono,tuner, CD/Aux and tape 1 and tape 2;
Quiet EQ circuitry;
Two tape monitors with editing capability
Main and/or remote speaker selection
Heavy-duty aluminium front panel;

Only black finish available
Specifications:
Contiuous Power Output per Channel:
40 W :  20 Hz - 20 kHz at 8 Ω, (Total Harmonic Distortion 0,06%)
60 W :  1khz DIN at 8 Ω
Input Sensitivity/Impedance:
Phono MM :  2,5 mV/47 k Ω
Tuner, CD, Aux, Tape :  150 mV/22 k Ω
Frequency Response:
Phono :  RIAA ±0,8 dB
Tuner, CD, Aux, Tape :  5 Hz -90 kHz (-3 dB)
Signal-to-Noise Ratio:
Phono :  71 dB (72 dB IHF-A)
Tuner, CD, Aux, Tape :  90 dB (98 dB IHF-A)
Power Supply/ Consumption:  240 V 50/60 Hz ; 340 W
Dimensions (W x H x D):  430 97 x 240 mm
Weight:  5,8 kg