Akai - AA-5500 Amplifier Solid state stereo amplifier

AKAI AMPLIFIER AA-5500. Japan 1973. In magnificent aesthetic and functional condition. Silver-plated with wooden sides. Fantastic sound.
Solid State Stereo Pre-Main Amplifier
This dynamic 120 W music power stereo pre-main amplifier is ahead of its time with highly advanced circuitry, multiple amplifier convertibility, versatility, and design. SEPP-ITL-OTL circuit and power bandwidth of 20 to 45 Hz for full dynamic range and the realization of less than 0.1% distortion. The direct-coupled preamplifier and phono amplifier circuits utilize space-age integrated circuits for superb tone quality. The playback and recording jacks can be used separately or simultaneously for varied recording and playback techniques. Multiple input, output and speaker connections. The pre and the main amplifiers can be separated for future multiple amplifier operation. Attractive design to blend in with any audio components.
Specifications
Music Power Output: 60 W/60 W at 4 Ω or 40 W/40 W at 8 Ω
Rated Power Output: 45 W/45 W at 4 Ω or 30 W/30 W at 8 Ω (0.8% I.H.F.)
Rec Output:
PIN: 150 mV
DIN: 25 mV
Input Sensitivity:
Aux: 150 mV
Tuner: 150 mV
Phono 1, 2: 3 mV
Tape 1, 2: 150 mV
Mic: 1 mV
Frequency response: 20 Hz to 50 kHz
Total harmonic distortion: 0.1%
Input sensitivity: 1 mV (mic), 3 mV (MM), 150 mV (line)
Signal to noise ratio: 51 dB (mic), 65 dB (MM), 70 dB (line)
Output: 150 mV (line), 25 mV (DIN)
Semiconductors: 17 x transistors, 5 x IC, 10 x diodes, 2 x varistor, a x SCR
Dimensions: 432 x 143 x 330 mm
Weight: 10 kg
Key Features
Versatile Connectivity: Includes two phono inputs, tuner inputs, auxiliary input, and two tape inputs/outputs.
Pre/Main Separation: Allows independent use of the preamp and power amplifier sections via rear connectors.
Modular Design: Internally, the circuitry is divided into several boards, simplifying maintenance and repair.
Controls: Features bass and treble adjustments (dB), high and low cut filters, and loudness control. Lo