Cary Audio CAD-280SA V12R

@oldhvymech
"I did have Mundorf .22uf 1000v Supreme Silver gold oils. for the audio 1 cap swap, I also had .22uf 1400v Supreme aluminum caps."

Not following ya. Where "did" the Mundorfs go?

The ones to get are the non-oils for fuller sound and detail with Ruby EL34s, specially these  >> Mundorf Capacitor 0.22uF 1000Vdc MCap® Supreme EVO SilverGold Black SESG <<

Where did they go? They haven't gone anywhere yet. That is what I have in hand. The Supreme Silvers oils are a great sounding cap with 6550 KT88 and 90.  I'm not an el34 guy.  Though I'm trying.. LOL Silverfish reminds me of Marantz. 7C 7T 33, 3300. They used those things.

Fuller sound? It's plump as a dumplin' Now.. I have two ways to go, NOW El34s, Ampex 12AX7, RCAs EL84. Wonderful mids, BUT 300-700 hz is where this amp is kinda lacking 700 up is great till about 11-2 khz then kind of loses it's magic again I rolled KT88, GE 12AZ7, and the RCA. HUGE difference in the low mids and the HF is a lot better.

So Sinatra, Denno, and Island music, salsa get the EL34 combo.
Herbie Hancock, Stanley Clark, Tony Williams, (and the grandkids music, RAP) get the KT88 combo..That why there is more than one system here...

I'm thinking I can keep the KT88s and go with the oils, which I know works well.  Still be able to run el34 and get close to what I have now. (maybe a tad better)
I know these oils work real well with 6l6s which a just a game changer for a LOT of the older Country Western, and for sure any of the early rock and roll stuff. The reverb era!!!! AND that gives me a 3rd option.

I would have had to used a MC240 and a MC275 to listen to all the different sound. Now one amp, re voice in less than 10 min, three way to go, no cable swaps.. I'm liking it. I really like his amp...So use to Mcintosh.

Now the real test. My MC240, that is ALL trick out, well see whos the master of the mighty 6L6 valve. This 240 is very special..
Yet to it bested., with 6L6s. Maybe... If this Cary can do it. I'll be looking for a second one..and thin the herd a bit..

Regards..

I put  Mcap Supreme Silver/Gold (non oil) I had both. I thought it was Supreme Alu.. I had to leave the room for about 45 min.  Making some pretty wonkie noises. settled in a bit, after 6 hours of playing, sound almost SS like. Razor sharp. KT88s. I've never seen an amp that was so easy to work on, cap swap, interior cleaning, tube pin tighten, put back together, wax it, retube and bias in under 2 hours. 

The sonic change is not subtle at all.. It went from tubie to tight. I bet the el34s sound great. If they could just keep the highs like kt88 or 90s and the mids like the el34s and the low mids like kt88 or 6550. Maybe a KT66/6L6 haven't tried it yet...

We'll see 

The stock Ruby EL34 (Shuguang EL34-BSTR) sounded the smoothest with the Mundorf SESG Evo (non-oil) Supreme caps in my V12R amp, and I was using vintage RCA EL84s and Siemens 12BZ7s or RCA 6922s on the front end (50w Triode) mode.

With that said, my Cary SLP-98 preamp did have Jensen Oiler caps in it with vintage 6SN7s. On that amp I did use all OFC copper neutral interconnects and OFC copper bi-wire speaker cables. No silver. The combo was really nice, smooth, holographic.

With what I'm doing and listening too, the Stock Ruby sound a lot better than before, 12bz7 and EH EL84 with the old Audio 1 didn't work.
With a12ax7 or 12az7, Mullard el84, El34s or KT88 yes. NOW ..after the cap change it's really gone up a notch on SQ, they were very sonicly gifted before, now. Even easier to revoice and no signal tubes, the 12at or az work with all the power valves...Using 6l6s right now, not sure on that one, need 8 more valves, to get a good feel. 6V6s are on the way, surplus sovex, NOS...
I have some RCA BP, but I hate to use top notch, if so so will do. This machine really has the ability to use ok tubes and make them sound really good...Great engineering. Wonder what the mono blocks are like?
These are plenty powerful. BUT I'm use to 300+ with the VTLs.  Never used it but they drove everything I use very well..

I did a PC swap a few days back... 3 copper/silver mill speck teflon poly vinyl cover #10s and 1 # 10 ms copper, did a weave. Worked very well
sounds just as good, as MITs that are broke in just off the bench... Light NOT FLEXIBLE.. I like it...