Pioneer Spec 1 Preamp And Spec 2 Amplifier, Both Units Internally Restored- RARE
Rare and TOTL Vintage Pioneer Spec 1 Preamplifier and Spec 2 Stereo Amplifier.
Both units recently internally restored with service document and parcel of replaced parts available.
100s of parts replaced including the large filter caps in the Spec 2.
Quite possibly the best vintage Pioneer gear the audio giant ever made.
Restoration tech said this combo was the best sounding gear he has heard of the 200+ units he’s worked on.
Please feel free to ask questions.
These two will be professionally packed by a carrier certified ship station to provide the best opportunity for these to arrive safely.
They will be individually packed.
Spec 1: Cosmetic condition is nice, with a bright face and nice lettering.
Faceplate corners show a minor ding on all corners, with minor scratching on the black metal top (see pics for condition)
Description
The Spec-1 has differential amplifier circuitry incorporated in the equalisation and tone control amplifiers.
This is complemented by a dual positive and negative power supply system for all amplifier sections, which provides improved DC balance and stability, while eliminating click noises due to switching.
An electronic muting circuit, employing a reed relay, blocks surge noise associated with power switch operation.
Specifications
Frequency response: 10Hz to 70kHz
Total harmonic distortion: 0.
03%
Input sensitivity: 2.
5mV (mic), 2.
5mV (MM), 150mV (line)
Signal to noise ratio: 70dB (MM), 90dB (line)
Output: 150mV (line), 2V (Pre out)
Semiconductors: 50 x transistors, 33 x diodes
Dimensions: 480 x 186.
5 x 365mm
Weight: 11.
2kg
Accessories: connecting cord, hex wrench
Year: 1976
Spec 2: Cosmetic condition is very good - excellent with a bright face and lettering.
Faceplate in excellent condition with some minor scratches on the black metal top (see pics for condition)
Description
The Spec-2 is a 250W rack mount stereo power amplifier featuring a current limiter circuit, peak level meters, protection circuit, power switch on/off and impedance selector muting and a temperature detector.
This high power design employs a cascaded differential amplifier first stage, push-pull drive, and darlington triple push-pull circuit with all stages direct coupled (OCL).
Specifications
Power output: 250 watts per channel into 8Ω (stereo)
Frequency response: 5Hz to 80kHz
Total harmonic distortion: 0.
1%
Damping factor: 50
Input sensitivity: 2V
Signal to noise ratio: 110dB
Speaker load impedance: 4Ω to 8Ω
Semiconductors: 55 x transistors, 75 x diodes
Dimensions: 480 x 186.
5 x 445mm
Weight: 24.
3kg
Year: 1976
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