Arcam Delta 90
Stereo Integrated Amplifier (1986-89)
The Delta 90 can accept inputs from both moving magnet and moving coil cartridges, selected using a switch on the back panel. Moving magnet cartridges can be optimally matched by the addition of a switchable internal loading module, type ULM/M.
Additionally the Delta 90 can accept inputs from CD, tuner and two tape recorders - all four inputs having high overload margins to enable any source to be accepted without distortion. There are independent controls for both 'listen' and 'record' functions, allowing the user to listen to one programme at the same time as recording another from an entirely separate source.
The bass and treble controls have been designed so that deficiencies in small loudspeakers and cartridges may be corrected without affecting the critical midrange. For the ultimate in audiophile sound these controls may be bypassed with the 'direct' switch on the front panel; nevertheless, used sensibly, they can help correct for many imperfections that may be present elsewhere in the audio system.
All input sockets are via high quality phono sockets. The loudspeakers are connected using heavy duty posts which will accept any type of connector, ie bare wires, 4mm plugs, spade connectors, pin connectors etc. Although the main speaker sockets are wired directly to the amplifier outputs (to obtain the best possible sound quality), a second pair of switched outputs is also provided enabling the loudspeakers to be cut out when using headphones.
Two tape recording outputs are provided, allowing full tape to tape dubbing as well as the ability to listen to a different source (from the one that is being recorded) by using the 'listen' control.
Power output: 70 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.02%
Input sensitivity: 0.1mV (MC), 2mV (MM), 220mV (line)
Signal to noise ratio: 66dB (MC), 73dB (MM), 77dB (line)
Output: 100mV (line)
Speaker load impedance: 4Ω (minimum)
Dimensions: 430 x 90 x 265mm
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