High-End класса мощник Yamaha-M4. Made in Japan. Завезен из ЕС. Абсолютно фантастический усилитель. Почти 20 кг чистого звучания и бомбического монстрозного вида. На месте можно сравнить с люксман усилителем. Рига, Тейка, ватсап. Есть и другие предложения. HIFIcollectionRIGA

Stereo Power Amplifier (1978-83)
Power output: 120 watts per channel into 8Ω (stereo)
Frequency response: 1Hz to 100kHz
Total harmonic distortion: 0.005%
Damping factor: 200
Input sensitivity: 1V
Signal to noise ratio: 118dB
Speaker load impedance: 4Ω to 8Ω
Semiconductors: 81 x transistors, 3 x IC, 2 x dual FET, 34 x diodes, 2 x bridged diodes, 2 x zener diodes, 28 x LED
Dimensions: 435 x 145.5 x 374.5mm
Weight: 18.5kg
Natural clear warm balanced sound
He said in 30 years it maybe the best sounding solid state amp he's ever heard, with a vintage sansui, marantz and aragon PA sitting next to it.