Sharp HP-400H 2way HeadPhones, 1973, made in Japan

Link: radiomuseum

Country: Japan
Manufacturer / Brand: Sharp; Osaka
alternative name Hayakawa Electric Co.Ltd.
Year: 1970 ??

Category: Loudspeaker, headphone or earphone
Wave bands - without
Power type and voltage No Power needed
Loudspeaker - Is a Headphone or Earphone
Power out
Model: 2 Way Stereo Headphone HP-400H - Sharp; Osaka
Material Various materials
Shape Miscellaneous shapes - described under notes.

  • Sharp 2 Way HP-400H;
  • Closed system, separate volume controls.
  • 4 Speaker.
Net weight (2.2 lb = 1 kg) 0.656 kg / 1 lb 7.1 oz (1.445 lb)

Motu Midi Express 128 USB Midi Interface Patchbay, made in USA

Link: motu | drivers | manual
MIDI Express 128 is a 8-in/9-out MIDI interface compatible with Macintosh and Windows.
Built from the same technology found in MOTU's flagship MIDI Timepiece, the MIDI Express 128 is a professional MIDI interface that provides plug-and-play connectivity to any USB-equipped Mac or Windows computer. The Express 128 provides 8 MIDI IN, 9 MIDI OUT, 128 MIDI channels and compatibility with all Macintosh and Windows software.
The MIDI Express 128 takes full advantage of USB, giving you high-speed MIDI throughput, sub-millisecond timing accuracy, support for "hot-swapping" and plug-and-play expansion. Need to connect another sound module or synth? No problem. Just add another MOTU USB MIDI interface via any available USB port. And the Express 128 is powered by USB – no wall wart or AC plug.
No other MIDI interface offers this much value and performance at such an affordable price.


  • MIDI connectivity - Provides eight independent MIDI inputs and outputs for a total of 128 MIDI channels.
  • Expansion - MOTU MIDI interfaces grow with you. Expansion is simple. Add additional MIDI ports by plugging in another MOTU MIDI interface.
  • Compatibility - Works with your favorite software. Includes drivers for Mac OS X and Windows. High-speed USB connection. 
  • USB-Powered - Bus-powered from USB connection. No additional power necessary.
  • Rack mountable - With rack ears attached, fits standard 19 inch (48.26 cm) rack at 1U high. Excluding rack ears, chassis dimensions are 19 × 7 × 1.75 inches (48.26 × 17.78 × 4.45 cm).

Electronica EM-25 Analog Synthesizer Strings, 1980, made in USSR | Электроника ЭМ-25, 1980, СССР

Link: ruskeys | documents

Electronica EM - 25 is a synthesizer-strings that has 3 timbre sections: stringed - contrabasses, violoncellos, violins, organ-registers ("16'","8'","4'","2'"), wind-trombones, trumpets.

Stringed and organ sections:

  • polyphonic attack and release of sound with duration control
  • switching decay mode

  • Wind instruments section:
  • generator of curved with controls: ATTACK, DECAY, SUSTAIN.
  • modulator with controls: RATE, DELAY, VIBRATO
  • controlled filter with controls: ENVELOPE, MODULATOR, CUTOFF, ACCENT
  • filter run mode -mono or polyphonic 

There is also a possibility to split the keyboard to 2 section (with setting up different timbres of sounding)

Onkyo Sc-570 mkII, 1988, made in Germany

Loudspeaker: 3 Loudspeakers
Nominal Power: 80 Watt
Max Power: 160 Watt
Impedance: 4 Ohm
Frequency range: 36-45 000 Hz
Sensitivity: 90 db
Dimensions (WHD) 270 x 500 x 270 mm
Net weight: 1 pcs - 11.5 kg

Пищалка является супертвитером и воспроизводит ВЧ составляющую звука выше 14-15 кГц.

Videoton Hi-Fi Box DC-2510A, 1980, made in Hungary

Link: radiomuseum

По ссылке выше предоставлено TTX по модели без индекса "A", ниже предоставлена информация с ярлыка-наклейки АС с индексом "A". Производителем введены усовершенствования в виде добавления регулятора регулировки Mid Range.

Country: Hungary
Manufacturer / Brand: Videoton; Székesfehérvár
Brand VTTV
Year: 1980 ?

Category: Loudspeaker, headphone or earphone
Wave bands - without
Power type and voltage No Power needed
Loudspeaker 3 Loudspeakers
Power out Music Power: 70 Watt / Nominal Power: 110 Watt
Model: Hi-Fi Box DC-2510A - Videoton; Székesfehérvár
Material Wooden case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 490 x 330 x 250 mm / 19.3 x 13 x 9.8 inch
  • Music Power: 70 Watt
  • Nominal Power: 110 Watt
  • Impedance: 8ohms
  • Woofer: 25 cm
  • Midrange: 10 cm
  • Tweeter: 2.5 cm
  • Frequency range: 25 Hz - 20 kHz для модели DC-2510A / (35 Hz - 20 kHz для модели DC-2510)
Net weight (2.2 lb = 1 kg) 11.5 kg / 25 lb 5.3 oz (25.33 lb)

Bass Guitar Belarus (Blue) | Бас-гитара Беларусь, 1990, made in USSR

full description & scan documents (russian language): sovietguitars - thnx my moscow friend SiPUS

Akai S950 Midi Digital Sampler, 1988-93, made in Japan

Link: vintagesynth | akai-sampler | muzines | Owner's Manual

Polyphony - 8 voices
Sampler - 12-bit linear, 7.5 - 40kHz sampling rates (63 seconds). Up to 48kHz in S950.
Memory - 750 kB (standard) to 2.25 mB RAM
Effects - None
Arpeg/Seq - None
Keyboard - None
Storage - Up to 2.25MB
Control - MIDI plus optional 8 trigger-inputs via ME35T-board
Date Produced - 1988

Roland - SP-555 Creative Sampler with Performance Effects

Link: roland

Pioneer PT-20 Dome Tweeter, 1974-78, made in Japan

Link: audio-database

Form Dome shape tweeter
Impedance 8ohm
Frequency band 3kHz - 20kHz
The maximum input 20W
Rated input 10W
Output sound pressure level 89dB/W/m
Cross over frequency 3kHz or more
The total magnetic flux 30,000maxwell
Flux density 12,000gauss
Baffle aperture 101phimm
Dimensions Diameter 124x depth of 38.2mm
Weight 0.66kg

Telefunken TL 750 (Tweeter speaker #247812), 1981, made in West-Germany

Link: radiomuseum telefunken.pytalhost

Tweeter speaker: 2.5 cm (dome) #247812

Lel RC Digital Reverb [Лель РЦ цифровой ревербератор], 1986, made in USSR

Link: rw6ase

Цифровой ревербератор "Лель РЦ" выпускался с начала 1986 года. Портативный цифровой ревербератор ''Лель РЦ'' предназначен для получения в небольшом помещении акустического эффекта большого концертного зала и может использован с эстрадной и бытовой усилительной аппаратурой.

  • Имеются эффекты: ''хор'', ''эхо'', ''флянджер'', ''повтор''.
  • Задержка и реверберация фиксированная и плавная.
  • В ревербераторе предусмотрена работа в режимах ''моно'' или ''стерео''. Время задержки 0,5 сек.
  • Время реверберации 3 сек.
  • Уровень входного сигнала 0,25 В.
  • Отношение сигнал/шум 60 дБ.
  • Питание - сеть 220 В.
  • Потребляемая мощность 20 Вт.
  • Габариты модели 308х320х70 мм.
  • Масса 2 кг.
  • Было два варианта оформления ревербератора.

Electronica RC-01 Analog Reverb Echo/Delay [Электроника РЦ-01], 1987, made in USSR

Link: ruskeys


  • 5 control knobs include Input and Output volume, Balance, Delay time and Feedback.
  • Delay times also is fixed with buttons : 10, 20, 40, 80, 160, 320 ms.
  • The repeat rate is very sensitive and subtle and the intensity knob allows for almost endless repeats.
  • Connectors: IN and OUT on 5-DIN
  • Body made of metal, size is between half and full rack. 
  • Power : 220/240 V AC

Korg Poly-800 Polyphonic Analog Synthesizer - Reverse Keys Edition [black keys], 1983, made in Japan

Link: vintagesynth | wikipedia | Owner's Manual | Schematic
Mods & Hacks: PolyBeast Mod KIT | Moog Slayer | fm800 |


Polyphony - 8 voices (4 when doubled)
Oscillators - 1 DCO per voice (2 when doubled). 1 Noise generator.
LFO - Sine wave only w/ speed & delay and route to osc. or filter
Filter - One 24 dB/oct low-pass resonant filter
VCA - 3 ADBSSR Digital Envelope Generators: DCO, Noise, VCF
Effects - Stereo Chorus, Chord Memory
Sequencer - 256-step polyphonic sequencer with MIDI Start, Stop and Clock.
Keyboard - 49 keys
Memory - 64 patches
Control - MIDI IN/OUT/THRU, Cassette tape interface
Date Produced - 1983/84

Videoton EA 6383 S Stereo Amplifier, 1983-85, made in Hungary

Link: radiomuseum users.atw | elektrotanya

Country: Hungary
Manufacturer / Brand: Videoton; Székesfehérvár
Brand VTTV
Year: 1982–1985
Category: Audio Amplifier or -mixer
Semiconductors (the count is only for transistors) 36:
Main principle Audio-Amplification
Wave bands - without
Power type and voltage Alternating Current supply (AC) / 230 Volt
Loudspeaker - This model requires external speaker(s).
Power out 100 W (unknown quality)
Model: Stereo Amplifier EA6383S - Videoton; Székesfehérvár
Material Metal case
Shape Book-shelf unit.
Dimensions (WHD) 440 x 115 x 240 mm / 17.3 x 4.5 x 9.4 inch
Notes 3 IC, 20-20000 Hz.


Hi-Fi stereo amplifier with 8Ω output. Semiconductors: 3 ICs, 36 transistors and 21 diodes. Tuner, two magnets and a magnetic turntable can be connected to it. There is a headphone jack on the front panel. Balan, high and bass control and volume potentiometer are located on the front panel. The push buttons can be used to adjust physiological volume, mono-stereo switch, high and low-cut filter. Below the input selector buttons. The display is a two-line VFD panel. Next to it is the "Mute" button, which reduces this volume by 10 dB.
Frequency response: 10 to 40,000 Hz. Bandwidth: 20 to 20,000 Hz. Signal to Noise: From tape and tuner inputs: ≥58 dB; turntable input: ≥50 dB. Harmonic distortion: 0.06%. Intermodulation distortion: 0.2%. Transduction attenuation: 1kHz for tuner and tuner inputs: ≥50 dB; turntable input: ≥40 dB. 10 kHz for tuner and tuner inputs: 40 dB; turntable input: 30 dB. Output power: sinusoidal: 2x30 W; music: 2x50 W. Power consumption: max. 160 W.


Donor: Tibor Schroder.
Videoton's second generation (RT-402) high-fidelity Hi-Fi tower amplifier. Additional features of the tower include Videoton RT 6303 S tuner, Akai AP-Q310 / C turntable, Akai CS-F210 tape recorder, VT DC 2550 speaker and SA7 stand.
Its predecessor is the VT EA 6380 S, which has changed a lot. Interestingly, when you touch the buttons, the electronics mute the amplifier so there is no noise or bump on the loudspeakers when switching on. Its amplifier includes BD809-BD810 high-purity transistors, but the same can be said of the other semiconductors used in the final phase. Despite its active use, the last bolt is in its original, flawless and scratch-free state, making this amplifier even more special.

Собран на Motorola BD809/810 !!!