Akai AA1150
Stereo receiver with DC-coupled amplifier design and 2x150W output at 8 ohms.
Overview
The Akai AA1150 is a stereo receiver manufactured by Akai Electric Co., Ltd. It delivers 2 x 150W (RMS) into 8 ohms and 2 x 200W (RMS) into 4 ohms, with a total harmonic distortion of just 0.008%. Described as "Awesome" and having "Stunning Sound!", it features excellent phono inputs and a smooth tuner. The AA1150 includes two phono (MM) inputs and multiple line inputs, with outputs for two speaker pairs (A & B), tape recording, and a preamp output. It is considered an excellent vintage receiver, with one forum user noting it as a "Great condition amp for a good price!"
Specifications
| Power Output | 2 x 150W (RMS) at 8 ohms, 2 x 200W (RMS) at 4 ohms |
| Total Harmonic Distortion | 0.008% |
| Frequency Response | 5Hz - 100kHz (+0, -3dB) |
| Signal-to-Noise Ratio (Phono MM) | 90dB |
| Signal-to-Noise Ratio (Line) | 110dB |
| Input Sensitivity (Phono MM) | 2.5mV |
| Input Sensitivity (Line) | 150mV |
| Output Level (Rec Out) | 150mV |
| Tone Control | Bass: ±10dB at 100Hz, Treble: ±10dB at 10kHz |
| Loudness Contour | +6dB at 100Hz |
| Phono Inputs | Two |
| Inputs | Phono (MM), CD, Tuner, Tape1, Tape2, Line |
| Outputs | Speaker A, Speaker B, Tape1 Rec, Tape2 Rec, Pre Out |
| Headphone Output | 6.3mm stereo jack |
| Speaker Connections | Provision for two pairs (A & B); only two pairs can be played in combination |
| Dimensions (W x H x D) | 430 x 150 x 385 mm |
| Weight | 13.5 kg |
Design
The AA1150 uses a DC amplifier design with a direct-coupled signal path from input to output, eliminating coupling capacitors. The power amplifier section employs a triple Darlington configuration for high current output and stability. Its power supply is built around a large toroidal transformer and four 10,000µF filter capacitors.
Context
The AA1150's "big brother" is the AA-1200.
Market
As of 2025–2026, units have sold for NZD $1,080, USD $599–$650, RON 900, EUR €250, BRL R$1,800–R$2,000, and PLN 1,700. Some listings included original owner’s and service manuals, with units described as "Freshly Serviced" or "Cleaned - Tested".
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