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I recently had one of my PL400 series 2 amps start to make a very audible hissing from only one channel. It starts a few minutes after I powe it up. The input sensitivity has no effect on level and it will make this noise even with no input signal connected. Thoughts?

You have plenty of what? If you have a 700 series 2 faceplate i would like to purchase on from you please. thanks.

system is coming along. Still have a couple of 400 series 2s and a Sony PSX=60 turntable that are getting repaired and updated. Still need a face plate that the 700 series 2 if anyone has one.

Dont worry....its on my "to do for sure" list. ;)

I have done the power supply cap upgrade, added speaker protection relays, and upgraded the outputs in three of the four 400s. Will do the last one soon.

dammit! Now I am wanting to upgrade all of my amps to those LED diplays!! hahaha.

Do you also have the black knobs to go with your black faceplate? I also see that your level meters display differently. Are those also White Oak replacements?

That's not a terrible idea. Considered it bit then I would have to do the rest of my PL to match and that would get expensive. :)

I could also use a pair of gain knobs if you have any. Thanks.

I have a set of handles and yes the meter is a bit odd. It will work perfectly after it warms up. Thanks

If you find one please let me know. Thanks

I have a 700 series 2 that someone has brused the faceplate so it's no longer champaign colored. Does anyone have the inner and outer faceplate to make it look original

thanks. I will ask my technician if they are are good. He may just be wanting to replace everything to make sure its all up to date.

thank you for you infomation

anyone got any suggestions on replacements for the RC410 predrivers? I have heard that they, the SJ2741, and 66546 have all been discontinued. surely there is a comperable replacement if not a better part? thanks for your input.

thanks~~~ just sold my SX1080 and 4 SX780s to pay for this next segment in my vintage hifi saga. :)

pretty interesting rely considering this is a DIY Forum for helping people to get the most out of their electronics. You would expect to get some assistance and a direction to start but I guess thats not why you are in the forum. It would be so much easier to just go buy all new gear but I...

The system I am building up to is for my office and listening room. I will have a set of A/D/S/ L1230 cabinets that my buddy bought new in 1984 and then sold to me. I will be wiring them all active and then will build a pair of 10" large sealed subwoofer enclosures for the bottom end. For...

I am not sure if it has been altered internally. So do i need pull all of outputs and check them all? I dont mind doing that, just want to make sure. Or do I just need to check the bottom (dirves) in the columns? Thank you for your patience and help. I know a quite a bit about...

These came in the unit when i purchased it. I am not sure of the maker of the QS2 TO3s. Oddly enough, the left channel, the one withe the RCA drivers is much hotter than the other side with the QS2s. Amp seems to work and sound fine. It just gets too hot to touch even with no signal on...