Akai AM-M 659 (1989–1991)
A solid-state digital integrated amplifier from the turn of the 1990s, featuring onboard D/A conversion and multiple input options.
Overview
The Akai AM-M 659 is a digital integrated amplifier made by Akai between 1989 and 1991. It combines amplification with a built-in D/A converter, allowing direct connection to digital sources. This black unit supports both balanced and unbalanced analog inputs, including XLR and RCA, and possibly BNC connectors. It delivers 55 watts per channel into 8Ω loads in stereo mode and includes a remote control for operation.
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 device contains a D/A Converter block, integrating digital-to-analog conversion within the amplifier chassis.
Market
The Akai AM-M 659 has appeared on second-hand markets in working condition and good physical shape, with one listing showing a bid of €30. A service manual is available, aiding in maintenance and repair.
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