510 preamp and 520 power amp after rebuild.
Rechargeable battery pack in preamp, however most owners prefer the option to run from a “wall wart” type mains PSU adaptor. New controls and gold connectors. PCB upgrade. Extra line input added in.
New PCBs and speaker protection in power amp. New rear switch and IEC socket inlet fitted.
Below is 510 fitted with a switchable MC/MM stage and stabilised power supply in place of batteries. A “wall wart” supplies AC power.
