Cambridge P-40
Almost nothing is documented about the Cambridge P-40. What little is known comes from a reader query in an undated issue of Audio-Collection (p.60). It says the P-40 is an integrated amplifier with an auxiliary input rated at 50 mV sensitivity and 100 kΩ impedance, and that the amplifier can handle more signal than the nominal figure.
Period directories and reviews have turned up no production years, original price, power output or further specifications. The auxiliary input figures (50 mV sensitivity, 100 kΩ impedance) come from that same reader query in Audio-Collection (p.60).
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