In perfect condition. Is some pictures seems little dirty front but is only dust. Country Japan Manufacturer / Brand Akai Electric Co., Ltd.; Tokyo Year 1982 Category Audio Amplifier or -mixer Technical Specifications Number of Transistors Semiconductors present. Semiconductors Main principle Audio-Amplification Wave bands - without Power type and voltage Alternating Current supply (AC) / 220 Volt Loudspeaker - This model requires external speaker(s). Power out 110 W (undistorted) Material Metal case from Radiomuseum.org Model: DC Stereo Integrated Amplifier AM-U41 - Akai Electric Co., Ltd.; Tokyo Shape Book-shelf unit. Dimensions (WHD) 440 x 120 x 397 mm / 17.3 x 4.7 x 15.6 inch NotesElectronic Components Stereo-Vollverstärker mit 2 x 80 Watt Sinus an 4 Ohm. Power output: 55 watts per channel into 8Ω (stereo) Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.007% Damping factor: 60 Input sensitivity: 0.25mV (MC), 2.5mV (MM), 150mV (line) Signal to noise ratio: 67dB (MC), 86dB (MM), 103dB (line) Channel separation: 60dB (line) Output: 150mV (line) Speaker load impedance: 4Ω to 16Ω Net weight (2.2 lb = 1 kg) 10.4 kg / 22 lb 14.5 oz (22.907 lb) Source of data -- Original prospect or advert Author Model page created by Franz Scharner. See "Data change" for further contributors.