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)


Overdrive Reserve:
  • 240 mV / ~80 kOhm / 36 dB (monitor)
  • 2.0 mV / 47 kOhm / 33 dB (phono)
  • 1.6 mV / 47 kOhm / 33 dB (micro)
Output Level at Nominal 1 V at output socket
Output Level:
  • 1.4 mV / kOhm at tape socket 
  • 1.2 V at record socket 
Signal/Noise Ratio 62 dB (tape/aux)
According to DIN 45 500: 60 dB (phono/micro)
Channel Separation:
  • > 55 dB at 1 kHz 
  • > 40 dB at 10 kHz 
Input Separation: > 50 dB at 10 kHz
Tone Control:
  • bass: +16 to -16 dB at 40 Hz 
  • treble: +12 to -12 dB at 15 kHz 
Balance Control: +3 to -13 dB
Noise Filter: 6 kHz turnover frequency, 12.5 dB/oct.
Semiconductors:
  • 4 integrated circuits 
  • 4 transistors 
  • 1 diode 
  • 1 LED 

Power Supply: 220 / 110 V AC
Fuses:
  • Mains 220V = 1 x T 80 mA 
  • 110V = 1 x T 160 mA 
  • Secondary 2 x T 100 mA 
Dimensions (WHD) 482 x 80 x 350 mm / 19 x 3.1 x 13.8 inch 

Notes

  • Telefunken HiFi Stereo Preamplifier STP1, 4 ICs
  • 6 stereo inputs (DIN and RCA) and microphone, noise filter, tape-to-tape-copy function
  • Front in aluminum champagne metallic or metallic-brown, with front handles
  • The power amplifier is suitable to STM1.

Net weight (2.2 lb = 1 kg) 5.4 kg / 11 lb 14.3 oz (11.894 lb)
Literature/Schematics (1) -- Original-techn. papers