Rare Quadraphonic beautiful looking Marlux with new blue led lights and funny joystick for speaker control! Amplifier works perfect, but FM tuner is defect. Good for phono amplifier. Picture are part of the description. SPECS: 4x 8 Watt or 2x 20W Build in "decoder" for pseudo surround effect. Amplifier section Tuner section 20-30 kHz 3 uV Power bandwidth Frequency range at 1 Watt±1dB FM sensitivity (IHF) 17-20 kHz FM max. harm, distortion at 100 uV FM signal /noise ratio at 100 uV 0.5% Total output power 63 dB RMS at 1 kHz, both channels output FM selectivity 45 dB IHF at 1 kHz, both channels output 120 Watts 15+15 Watts FM stereo channel separation at 1 kHz FM mirror frequency suppression 30 dB 55 dB Signal to noise ratio Frequency range Aux input 72 dB 60 dB FM 87.5-108 MHz 535 -1605 kHz Magn. Phono input AM Input sensitivity AM sensitivity (IHF) AM max, harm. distortion at 30% mod. 16 UV 150 mV 25 mV Aux input 1% Magn. Phono input 0.8% AM IF rejection at 1400 kHz 40 dB Max. harm. distortion at nominal, power 12 dB AM mirror frequency suppression Bass control Toge tone control 40 dB ±12 dB Mains voltage 45x25x12 cm 8 Kg Carefully shipped