The Yamaha KA-M555 is a Natural Sound stereo cassette amplifier designed to drive various speaker configurations. The unit features two decks: Deck A with playback reverse functionality and Deck B with quick reverse capabilities. It supports multiple audio sources including CD players, tuners, turntables, and phono inputs via the included remote control transmitter (RS-AV5).
| Rated output power (Front) | 35W x 2 (20 Hz ~ 20 KHz, 0.1%, 6 ohms) |
|---|---|
| Total harmonic distortion | 0.006% (at 1 kHz, with 25W/6 ohm output) |
| Frequency response | 5 Hz — 20 KHz ±0.5 dB |
| Signal-to-noise ratio (Phono) | 80 dB (6 mV) |
| Dimensions | 340(W) x 234.5(H) x 310(D) mm |
| Weight | 8.2 kg (18 lbs) |
The remote control transmitter works within a distance of 7 meters (23 feet).
Deck A uses a Permalloy PB head, while Deck B uses a Permalloy Rec/PB head.