Compact Disc Player Alpha

A stereo hi-fi compact disc player with a digital display and remote control (CR10). With a twin power transformer and oversampling digital to analogue conversion. RCA sockets for audio output and digital output.

Specification
Playback system
16 bit Compact Disc Digital Audio, using ultra linear, dual DACs (TDA1541) and high performance analogue filter and output stages

Optical readout system (Philips CDM-4)
Laser type                          semiconductor Al Ga As
Numerical Aperture             0.45
Wavelength                        800 nm

Typical Audio Performance  20Hz-20kHz unless otherwise stated)
Frequency response          ± 0.1dB 10Hz-10kHz,
                                        - 0.5dB at 20kHz
Channel balance               ± 0.2dB
Channel phase balance     ± 0.5 deg.
                                       0.007% at 1 kHz, 0dB
Signal to Noise Ratio        98dB CCIR/ARM weighted
Dynamic Range               96dB
Channel Separation          90dB at 1 kHz
Wow and flutter                Quartz precision control

Outputs
Output level                      2.2V rms at MSB (0dB)
Output impedance            22ohms
Minimum load impedance 5k ohm

Here you find 22 models, 22 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from A&R Cambridge Ltd. (ARCAM); Waterbeach, Cambridge