Vintage Sony XM-5540F Car Amplifier - Made in Japan, 4/3/2 Channel SQ Amp (Fully Working)

5540F Car Amplifier - Made in Japan, 4/3/2 Channel SQ Amp (Fully Working) - For sale is a legendary, old-school Sony XM-5540F 4-channel car power amplifier. Made in Japan during Sony's golden era of car audio, this is a premium Class-AB amplifier highly sought after by Sound Quality (SQ) enthusiasts for its exceptionally clean, warm sound and ultra-low distortion (0.005% THD).Specifications:Brand: SonyModel: XM-5540FMade in: JapanChannels: 4 / 3 / 2 (Bridgeable)Real Power Output (RMS at 13.7V):4 x 68W RMS @ 4 Ohms2 x 169W RMS @ 4 Ohms in Bridged mode (ideal for subwoofers or front systems)Total Harmonic Distortion: < 0.005% (1kHz)Features: High-quality built-in crossover (80Hz LP/HP filter), premium internal components, pulse power supply circuitry.Condition:Technical: 100% fully functional. Tested and working perfectly across all channels without any issues.Visual: Good vintage condition. It shows normal cosmetic signs of use on the heatsink structure (please inspect the photos for exact details).Worldwide shipping is available at the buyer's expense. Don't hesitate to send a message if you have any questions or need more technical details