RCA Caps

@geoffkait I saw what you quoted, so well put.

James, there is a real good chance that true shorting plugs will provide an improvement over the non-shorting Cardas caps. Do a search for them on ebay, where I found mine. I then sold my Cardas, as they were inferior to the far cheaper plugs. As a bonus, I got more for the Cardas caps than I paid for the plugs!

@geoffkait - I guess subtelty is not my strong suit :) Thanks for the award.
After my long time ownership and factory tweaking of the SP-10 preamp, my continued contact with ARC was mainly due to maintenance and refurbishment of my Dual 75a, which is now dormant again, but I bought a whole host of parts for it to be refurbished a few times, the last right before the company got sold. I used to deal with Leonard-- they were always pretty nice to me, and followed up.

@bdp24 Thanks for the pointer, I'll check out the shorting plugs...

whart, it's always a cause for concern when the original owner of a company sells it. Even more so when the owner was deeply involved in the design of his company's products, as was Bill Johnson in ARC's. I know some hardcore tube guys who feel ARC lost their way when they went hybrid (the SP-10 to the SP-11, in particular), and their products were more Rich Larsen's designs than Bill Johnson's. That an amp as old as the D75a, originally introduced in 1973 iirc, is still worth keeping running is a testament to the amp's design, that of Bill Johnson alone.