Akai AM-M 659 (1989–1991)
A solid-state digital integrated amplifier from the turn of the 1990s, with onboard D/A conversion and multiple input options.
Overview
The Akai AM-M 659 is a digital integrated amplifier. Akai made it between 1989 and 1991. It has a built-in D/A converter, so digital sources connect directly. This black unit takes both balanced and unbalanced analog inputs, including XLR and RCA, and possibly BNC connectors. It puts out 55 watts per channel into 8Ω loads in stereo mode. A remote control is included.
Specifications
| Power output | 55 watts per channel into 8Ω (stereo) |
| Speaker load impedance | 8Ω |
| Damping factor | 35 |
| Signal to noise ratio | 72dB (MM), 93dB (line) |
| Channel separation | 60dB (line) |
| Outputs | Monitor speaker, headphone jack, line-level |
| Inputs | Balanced XLR, unbalanced RCA, possibly BNC |
| Digital inputs | Optical |
| Dimensions | 350 x 137 x 360mm |
| Weight | 6.6kg |
| Voltage | 220V model, convertible for other countries |
| Power consumption | 185W for U model |
| Accessories | Remote control |
Design
The amplifier has a D/A Converter block, with the digital-to-analog conversion done inside the chassis.
Market
The AM-M 659 has turned up on second-hand markets in working condition and good physical shape. One listing showed a bid of €30. A service manual is available.
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