Cary Audio CAD-280SA V12R

I really cant tell you anything about caps and changing the internal components . I can tell you that six nines copper will be musical and engaging if its solid core . If its stranded , for crying out loud , don't get me going . Find your self some really nice Telefunken smooth plates or some Bugle Boys and have some good fun . BTW ….don't forget to screw around with the power cord and don't mess up that amp or I will report you to someone  ( not sure who but don't try me ….lol ) 

Hee Hee. It's running right now, with Telefunken, smooth grays, I pulled a pair of black plates, TOO mellow. I'm real close on the sound.  The Amprex have a bit more detail, I was surprised. The Two combos that are working VERY well is eL KT90s x 4,8,or12 and Sylvania (little bright) 12ax7a or the Amprex (very detailed, very quiet valve) 12ax7.
The second was (finally) with the Rubys or the Volvos, GE Tung Sol (vintage) 12ax7 and GE greens 12az7a. The Rubys and the GE greens, probably the best so far, both single ended or UL, very nice.. With the planars, super fast, super SUPER detailed, MID are as plump as a dumplin'. Detail is not quite as edgy at the KT90s,  Just sounds right...Man oh Man...Stanly Clark, Tony Williams, Herbie Hancock, Jeff Beck, Miles Davis, can't turn the sucker off... Johnny Cash is in the room with that Martin...and Yoko Ono is nowhere to be found.. Thank God...LOL

I made up a killer PC. Copper and Silver weave. 3 # 10 silvers and 1 # 10 copper. I did a 4 strand weave, with pure copper ends.. That was little nugget. Need to cook that cable a bit..I think it will shave a little on the  edgy KT 90s.. little breakin on the PC.  Fixed my Mac 275  GG. (the cable drop blunder). So far..things are lookin up....

Regards..

Take back the Mac fix. NOISY... uhhhh Thought I had it with just a bad valve... Silly me...Right side works but noisy..Left perfect..Amp graveyard in the sound room.... LOL, maybe..

@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..