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Pioneer Spec-1

Rack Mount Stereo Pre-Amplifier (1976-1977)

Pioneer Spec-1

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

Downloads

service manual (en)

instruction/owners manual (en)

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Pioneer Pre Amplifiers

Comments

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