ONLINE ONLY ESTATE COLLECTABLE AUCTION
Thursday, 21 - Monday, 25 May 2026
RANDALL RG-80 112SC AMPLIFIER; Recent repair and modification by Paul Crowther, ex Midge Marsden collection
Realised: $500 plus premium
Lot Details
Work done by Paul Crowther - Redo power supply section wiring configuration to reduce inherent hum and ripple noise. Make channel switching board using relays with gold plated contacts to stop noise from foot-switching unit. Replace volume pots on both channels. Replace channel LED indicators. Modify footswitch unit to enable remote control of the switching relays And replace footswitches and LEDs . Connect snubbing circuit across power switch to prevent loud ‘pop’ when switching power on/off. Modified footswitching circuitry and fitted custom made remote controllable switching circuit to amplifier to eliminate noise and improve sound quality.
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