Integrated Stereo Amplifier Alpha II (2)

A stereo hi-fi integrated amplifier with output power of 30 watts per channel into 8 ohms. Bass and Treble tone controls, Tape Monitor switch. RCA input sockets for Video, Tuner,  CD and Disc (MM cartridge), RCA input/output sockets for tape recorder. 4mm switched and direct sockets for 1 or 2 pairs of loudspeakers and a jack for headphones. MCA module available for MC cartridges.

Specification (Serial numbers 18800 - 39649)
(Noise and sensitivities ref. 30W into 8 ohms at 1kHz.)
Output Power (typical)  
Both channels driven into 8 ohms:   30W (20Hz-20kHz at 0.5% THD)
Single channel at lkHz into 8 ohms: 40W typ. Into 4 ohm 60W typ.
Harmonic distortion: at 25W, 8 ohms at 1kHz 0.02% typ.
Frequency Response
Disc Input:      typ ±0.5dB 60Hz-20kHz,-3dB at 20Hz
Other Inputs:   typ ±0.5dB 30Hz-20kHz,-1dB at 20Hz
Inputs
Disc (suitable for MM and 'high-output' MC cartridges
Sensitivity:     2.5mV, impedance 47k ohm/100pF
With MCA Module fitted (for MC cartridge)
Sensitivity:     120µv, impedance 330 ohms
Tuner, tape and video
Sensitivity:     200mV
Noise:           < -90dB
Input impedance: 25k ohm
CD
Sensitivity:     450mV, impedance 10k ohm
Outputs
Tape output
Nominal output level: 200mV, impedance 2k ohm
Headphones
Maximum output level into 600 ohms: 10V rms
Output impedance: 330 ohms.
Suitable for headphones of 8 ohm to 2k ohm impedance.
Loudspeakers
Nominal output level 30W per channel. Suitable for speakers of 4 ohm or higher nominal impedance.

Power supply
240V nominal 120VA, may be dealer adjusted to 120V nominal.
(220/110V and 100V models to special order)

In questo link sono elencati 22 modelli, di cui 22 con immagini e 2 con schemi.
Elenco delle radio e altri apparecchi della A&R Cambridge Ltd. (ARCAM); Waterbeach, Cambridge