Released in '76, this gleaming Pioneer SPEC 1 is one of the more striking preamps you'll find. The brushed-aluminum faceplate with silver knobs and selector switches is a stately interface fitting of such a feature-rich preamp. This piece has been fully rebuilt with ultra high-grade components, and it's ready for another 50 years.
- Production
- 1976-80
- Condition
- 9/10
- Serial No.
- AG9303670M
- Orig. MSRP
- $499
- Restoration
- Over 60 new capacitors
- All electrolytic caps in the signal path replaced with Wima Film caps (ultra audiophile quality)
- All other electrolytics are Nichicon UPW and UKL series Long life 105°C rated
- RCA jacks cleaned
- All controls cleaned with Deoxit D5 and F5
- Complete clean and detail of faceplate and all knobs
- Each and every screw hand cleaned and painted with gloss black epoxy enamel
- Amplifier chassis polished
- All outer panels professionally stripped and painted with textured paint
- Factory Specs
Type Solid-State Preamplifier
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
- Documentation
Pioneer Spec 1 Owner's Manual
- The History of Pioneer
- Pioneer was founded by Nozomu Matsumoto in 1938 in Tokyo as a radio and speaker repair shop. In December 1953 Mr. Nozomu Matsumoto succeeded in developing the first domestic dynamic speaker made of original parts. It was named A-8 and marketed in Japan under the Pioneer brand. It later became the origin of the HiFi ...
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- Liner Notes
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.
- Stock No.
- 7601411031261
Released in '76, this gleaming Pioneer SPEC 1 is one of the more striking preamps you'll find. The brushed-aluminum faceplate with silver knobs and selector switches is a stately interface fitting of such a feature-rich preamp. This piece has been fully rebuilt with ultra high-grade components, and it's ready for another 50 years.
