Technics SU-8088k Stereo Integrated Amplifier, 1979, made in Japan


Link: hifiengine

Power output: 80 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.01%
Damping factor: 50
Input sensitivity: 0.1mV (MC), 2.5mV (MM), 200mV (line)
Signal to noise ratio: 70dB (MC), 75dB (MM), 92dB (line)
Channel separation: 60dB (line)
Speaker load impedance: 4Ω to 16Ω
Dimensions: 450 x 142 x 360mm
Weight: 15kg
hifiengine | elektrotanya

Telefunken STP1 HiFi Stereo Pre-Amplifier, 1980-1981, made in Germany

THE STP 1 was the pre-amplifier in Telefunken's 1980 'state of the art' Hifi System, and is the companion for the STM 1. However, while the STM 1 was a more or less an exact copy of the TA 750's power amp section, the STP didn't take over all the bells and whistles of the TA 750's pre-amp section. Instead, it's a straight and simple pre-amplifier with everything that is typicallyneeded.

like all components from this system, the STP 1 was also available as a non-rackmount version, which was named CP 20.

NOTE: This unit lacks the original top cover, which was dark brown and not grey.

Country: Germany
Manufacturer / Brand: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH
Year: 1980/1981 Category: Audio Amplifier or -mixer
Semiconductors (the count is only for transistors) 4:
Reception principle Audio-Amplification
Wave bands - without
Details Hi-Fi equipment
Power type and voltage Alternating Current supply (AC) / 110/220 Volt
Loudspeaker - For headphones or amp.
Power out
Model: HiFi Stereo Pre-Amplifier STP 1 - Telefunken Deutschland TFK,
Material Metal case
Shape Book-shelf unit. 

Phono Deemphasis: according to DIN 45 547 
Nominal Input Voltages/ 210 mV / 470 kOhm / 33 dB (tape)
Nominal Input Impedances/ 210 mV / 470 kOhm / 33 dB (aux)

Telefunken STM1 HiFi Stereo Main Amplifier, 1980-1981, made in Germany


Link: radiomuseum | john.ccac.rwth-aachen | hifiengine telefunken.pytalhost Service Manual

THE STM 1 was the power amplifier in Telefunken's 1980 'state of the art' Hifi System. It practically contains the power amp section used in the TA 750, modified to fit into a 'slim-line' case. The power transistors in TO-3 case were replaced with types in plastic case, and the heatsink is flatter and wider and extends out ouf the housing at the rear side. The power amp board is the same, however a lot of components responsible for auxiliary supplies could be removed. The plastic frame with the main rectifier diodes and filter capacitors remained, but was 'laid flat' to make it fit.

Country: Germany
Manufacturer / Brand: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH
Year: 1980/1981 Category: Audio Amplifier or -mixer
Semiconductors (the count is only for transistors) Semiconductors present.
Reception principle Audio-Amplification
Wave bands - without
Details Hi-Fi equipment
Power type and voltage Alternating Current supply (AC) / 110; 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out
Model: HiFi Stereo Main Amplifier STM1 - Telefunken Deutschland TFK,
Material Metal case
Shape Book-shelf unit.

Nominal Output Impedance: 4 Ohms
Nominal Output Power: 2 x 85 W RMS
Peak Output Power: 2 x 120 W
Distortion Factor: < 0.1% @ 90 W / 1 kHz
Power Bandwidth: < 5 Hz ... > 58 kHz for K <= 0.5%
Dampening Factor: 20 @ 40 Hz / -12.5 kHz
Nominal Input Voltage: 1 V
Nominal Input Impedance: 47 kOhm
Output Level at 18.5 V at speaker output (4 Ohms)
Nominal Output Power: 7.4 V at headphone (200 Ohms)

Nady TCM-1150 Studio Vacuum Tube Condenser Microphone

Микрофон приобретался лет 7-8 назад. Мне иногда попадались в руки новые микрофоны в знакомых корпусах, заявленные как широкомембранники и там я находил всё что угодно вплоть до электретного капсюля за $1.5 вместо большой мембраны. В этом - действительно большая двойная мембрана, это не подделка с алиэкспресса.

В комплекте: блок питания TMPS-2, 7-pin XLR кабель (10 m) держатель "паук" для крепления на микрофонную стойку, ветрозащита.

  • Ideal for the most demanding applications, including all types of vocal and instrument pickup 
  • Gold-sputtered, ultra-thin (1” diameter) mylar dual diaphragm
  • Tube preamplifier circuitry with 6072 vacuum tube (a classic 12AT7 specially selected for low distortion, superior signal-to-noise ratio and minimum sensitivity to mechanical vibrations) 
  • Special output transformer designed for ultra transparency and natural warm reproduction of sound
  • Almost all brass parts for years of studio workhorse reliability 
  • Power provided by a dedicated AC power supply with balanced XLR output for connection to any mixing console; no phantom power required Nine different polar patterns remotely selectable on power supply for ultimate versatility in use and ease of operation: omnidirectional, cardioid, figure 8, and six intermediate stages
  • See more at: nady...

Yamaha a-720 Natural Sound Integrated Amplifier, 1985-1986, made in Japan

Country:  Japan
Manufacturer / Brand:  Yamaha Co.; Hamamatsu
alternative name Nippon Gakki
Year: 1985/1986 Category: Audio Amplifier or -mixer
Semiconductors (the count is only for transistors) Semiconductors present.
Reception principle Audio-Amplification
Wave bands - without
Power type and voltage Alternating Current supply (AC) / 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out 300 W (unknown quality)
Model: A-720 - Yamaha Co.; Hamamatsu
Material Metal case
Shape Book-shelf unit.
Dimensions (WHD) 435 x 147 x 399 mm / 17.1 x 5.8 x 15.7 inch

Heco Interior Plus 505, 1990, made in Germany

Place for a few introductory sentences to the unit.
Manufacturer: Heco
Model: 505 Interior Plus
Year: 1990 ca.
Production: Germany
Color: black ash veneer, Nu wood veneer?
Dimensions (W / H / D): 850 x 240 x 270 mm
Weight: 15 kg / pc
Estimated price: 800 euros / pair, according Stereoplay
here Anschlussmoglichkeiten auffuhren, if known.
Type: 3-way

Dual CV 1260 CLASS A (Black Face), 1985, made in Japan

Model: CV 1260
Years of construction: around 1985
Manufactured in: Japan (Denon)
Colour: satin metallic and anthracite metallic
Type: Analog
Remote Control: No
Power consumption: Idle 44 VA, Power Rating 500 VA, max. 680 VA
Dimensions: 440 x 97 x 265 mm (WxHxD)
Weight: 7 kg
Factory price approx .: 700 DM

Number of inputs: 5

  • Phono (RCA), 2.5 mV / 47 kOhm (MM), 0.8 mV / 100 kilohms (MC)
  • Tuner (RCA), 200 mV / 47 kOhm
  • Tape1 (DIN), 200 mV / 47 kOhm
  • Tape2 (RCA), 200 mV / 47 kOhm
  • Monitor (RCA), 200 mV / 22 kOhm

RITM-2 | РИТМ-2 Analog One-Voice Soviet Synthesizer [Silver Face], 1989, made in USSR

Link: ruskeys


This synthesizer was manufactured by Kirovsky musical instruments' factory in 1984, designer - Viktor Nikulin. The EMI Ritm 2 is an one-voice keyboard synthesizer designed for solo, ensembles and orchestral playing musical compositions of any genre. It can be used both for educational needs and creating different musical effects. This synthesizer can be used with an acoustic amplifier which has a response of 0,775. There is a possibility to use a low frequency amplifier such as radio receiver, TV and tape recorder. The quality of the sounding depends on an acoustic amplifier.

The synthesizer Ritm-2 can play soundings of the other classical instruments (keyboard, strings, reed and percussion instruments). It is intended for creating some specific sounds (wind, noise of surf, train, gun and whine). Using this instrument one can play some compositins with a random pitch and a timbre.

Control parametrs name: pitch wheel, modulation slider, modulation frequency, registers (4'8'16'32'), tuning modulation on, modulation amount, modulation waveform, noise, square waveform level, select waveform, wave level, cutoff, key track (1/1-1/2), resonance, modulation form/depth, phone, contour osc, output, memory, filter - attack, decay, sustain, release.


Keyboard's volume, octave2,5
Total audible range, octave5,5 from 'F' contra-octave to 'C' fourth octave
The error of pitch in module, %0,2
generator drift over 4 hours of continuous work in module, max1,0
Frequency change of the main generator, tone+/- 1,0
output amplitude, min, V0,775
Volume range control, dB60
Mains voltage, V, frequency 50 Hz220 within +/- 10%
Power consumption, max, W10
Dimensions, mm600е400е200
Weight, kg9

Soundcraftsmen RP2212 Record-Playback Audio Frequency Equalizer, made in USA


Soundcraftsmen welcomes you to the fascinating world of perfectly balanced audio reproduction, and we hope you will enjoy your experiences in expanding the capabilities of your stereo system, as much as we have enjoyed designing and developing the unit that makes possible this further expansion of your listening enjoyment.

The RP2212 equalizer may be used with receivers, integrated amplifiers, and separate preamplifiers and amplifiers.

It is designed to be connected to those inputs and outputs which are normally involved with the operation of a tape recorder (the Tape Monitor circuit)..

Input Sensitivity: 1V (3V max)
Output Level: 1V (6V max)
Gain: ± 0dB
Frequency response: 10Hz to 50kHz
Signal to Noise Ratio: 91dB
Total harmonic distortion: 0.1%
Control Range: ± 12dB
Frequency Bands: 30, 60, 120, 240, 480, 960, 1.9K, 3.8K, 7.6K, 15KHz

Hitachi HS-310 Loudspeaker System, 1981, made in Japan

Link: hifiengine


The model HS-310 is a top line loudspeaker system which is designed to reproduce sound with hardly any non-linear distortion and to meet the requirements of HiFi fans.

The woofer employs a metal cone which is made out of a single sheet of aluminium alloy, and this helps to expand the piston motion area and also to eliminate the effects of humidity.

The midrange employs a diaphragm, which is configured from a single sheet of aluminium alloy in much the same way as the woofer.

The high rigidity titanium diaphragm reduces distortion and it's small diameter of 25mm improves dispersion.

B&O Bang & Olufsen Beovox S4500 type 6318, 1981-1983, made in Denmark [last modification of the legendary model S45-2]

The speaker BeoVox S4500 the Danish company Bang & Olufsen was the last change of the legendary model BeoVox S45-2 (Type 6318), who was previously a modification of the S45. The S4500 represents the best performance of development teams around the designer Jacob Jensen. The speaker S4500 is a closed 3-way system with high sound pressure in a so-called tray-type design (front panel vertically curved) which improves the sound radiation. Actually, the S4500 was intended as a bookshelf speaker, but it offers the best results freestanding on a stand in a corner with a distance of 40 cm from the walls.


Для твердых галогенидов SeX4 & TeX4 характерно образование тетрамеров SS | analog art cycle techno | house | electro | rhythmic noise

Dual CV 61 (White), 1974-1976, made in Germany

DUAL CV 61 Restauration dualklinik

Specifications hifiengine | radiomuseum

Country:  Germany
Manufacturer / Brand:  Dual, Gebr. Steidinger; St. Georgen/Schwarzwald
Year: 1974–1976 Type: Audio Amplifier or -mixer
Semiconductors (the count is only for transistors) 30:
Principle Audio-Amplification
Wave bands - without
Power type and voltage Alternating Current supply (AC) / 110; 117; 220; 240 Volt
Loudspeaker - This model requires external speaker(s).
Power out 
from Model: CV 61 - Dual, Gebr. Steidinger; St.
Material Wooden case
Shape Book-shelf unit.

  • 2 ICs. Stereo audio amplifier with 2 amplifiers per 20 W (sinus)
  • LS matrix for Quadro effect playback.
  • Housing: walnut, natural; see also CV61W in varnish, white.
Power output: 20 watts per channel into 4Ω (stereo)
Frequency response: 10Hz to 35kHz
Total harmonic distortion: 0.3%
Damping factor: 25
Input sensitivity: 2.3mV (mic), 2.6mV (MM), 300mV (line)
Signal to noise ratio: 60dB (mic), 65dB (MM), 82dB (line)
Channel separation: 45dB (line)
Speaker load impedance: 4Ω to 16Ω
Dimensions (WHD) 420 x 108 x 305 mm / 16.5 x 4.3 x 12 inch
Net weight (2.2 lb = 1 kg) 6.2 kg / 13 lb 10.5 oz (13.656 lb) 

External source of data Erb
Source of data Katalog RFP 1974 / Radiokatalog Band 2, Ernst Erb
Mentioned in Handbuch VDRG 1975/1976

service manual

собран на: 
2 x Motorola BD607 Silicon PNP Power Transistor Gold Pin
2 x Motorola BD608 Silicon PNP Power Transistor Gold Pin

Yamaha MOTIF XS6 Music Production Synthesizer, made in Japan

SOLTON Twin Jet 2x100 Watt (Leslie), made in Western Germany