REFERENCE AMPLIFIERS

CENTRE INDUSTRIES

Radford reference amplifier

The phase inverter

Radford STA15 power amp – claimed by many to be the sweetest sounding incarnation of the Radford power amp circuit.

STA15  15Watt Amplifier Stereo Feeding Fountain.

 reference PRE-amplifierS

Preamplifier

Simplificação do Mullard Three Valve Preamplifier

AU-111 Schematic

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