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Does anyone have an opinion on swapping out the op amps on the white oaks boards ? I'm just curious if any one has upgraded them and what if any benefit....

Just A dumb question , If followed to the letter Joe's star grounding scheme for the WOPL 700B would have *NO* continuity from the RCA connector shield to the chassis ? That correct ?

Gentleman, Has anyone come up with a suitable modern equivalent for the Motorola MPSH04 TO92 transistor ? Cheers Matt

Gentleman, I just acquired my second 700B and will get into the WOPL overhaul eventually. As I was listening to my new toy .. A pop and then a fizz and then the smoke came out.... I pulled it apart to see several burnt traces on the 14A driver board.... I decided to try a quick swap out the...

Gentleman, I just noticed that my 700 has a hum. I noticed this when working on speakers without any crossovers.... Connect the amp to the speakers , with no inputs to the amp and we get a low but obvious hum. Connect The amp back to my system speakers ( paradigm signature s8"s ) and the...

Hey Guys, I need some direction .... My WOPL 700B has just recently developed a scary loud screeching from the one channel just as I turn it on... I will turn the amp on without any input signal , one channel VU will freak out and then the protect relay connects and then .... Screech pop bang...

Gentlemen, I am brand new to the community and have picked up a 700B that is getting the full WOPL treatment. I would like a few pointers and maybe share any results you may have had along the way... My first nagging question is about the RCA input wiring and switch .... I see some pics...