The Pioneer M-25 is a vintage stereo power amplifier introduced in the late 1970s as part of Pioneer's Series 20 lineup, renowned for its high-fidelity audio components.This amplifier operates primarily in Class AB mode, delivering 120 watts per channel into 8-ohm loads, with the first 3 watts functioning in Class A, ensuring low distortion and high-quality sound reproduction at lower power levels.
Key Specifications:
The M-25 features a dual-mono design with separate power supplies for each channel, enhancing channel separation and overall sound clarity. It utilizes Ring Emitter Transistors (RETs) in a three-stage Darlington configuration, contributing to its wide frequency response and low distortion across the power spectrum. Given its vintage status, the M-25 is primarily available through second-hand markets and auctions. When considering a purchase, it's advisable to ensure the unit has been well-maintained or professionally serviced to preserve its performance and reliability. For detailed specifications and user manuals, resources like HiFi Engine provide comprehensive information. In summary, the Pioneer M-25 remains a respected amplifier among audio enthusiasts for its robust construction, impressive specifications, and the warm, detailed sound characteristic of Pioneer's engineering during that era.
