Pioneer SA-7500
A 2-channel integrated stereo amplifier from Pioneer’s 1970s high-fidelity lineup.
Overview
The Pioneer SA-7500 is a 2-channel integrated stereo amplifier made by Pioneer in the mid-1970s. It was built for high-fidelity systems. It has inputs for two turntables, a tuner, an auxiliary source, and two tape loops. The faceplate is brushed aluminum, and the amplifier stages use silicon power transistors throughout. The unit is noted for its build quality and reliability.
Specifications
| Product type | 2-channel integrated stereo amplifier |
| Total harmonic distortion | Less than 0.3% |
| Damping factor | 25 |
| Signal to noise ratio | 65dB (mic), 70dB (MM), 90dB (line) |
| Intermodulation distortion | Less than 0.3% |
| Output impedance | 8 ohms |
| Dimensions (WxHxD) | 420 x 150 x 345 mm |
| Weight | 12kg |
| Power consumption | 375 W (max) |
| Inputs | inputs for two turntables, a tuner, auxiliary source and two tape loops |
Design
Inside the SA-7500 are silicon power transistors that are considered highly reliable. Together with the differential first stage, every stage is set up for DC amplification.
Market
Recent examples of the SA-7500 have sold on the used market for $250.00 to $400. Some units have reportedly developed intermittent operational problems over time.
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