Thumbs up to Cary Audio Service

@heart_sounds , a few years ago I was having an issue with my Cary V-12. I tryed to call tech support on the phone, but they told me they no longer offer telephone tech support and to email them. I sent more than one email asking for troubleshooting hints and getting a reply was like pulling teeth. Finally they did reply and basically told me what their shop rates for work was and to ship them the amp. I actually wound up seeking assistance on another audio forum and a helpful and patient member there helped me troubleshoot it to a bad capacitor which I replaced myself.

Compared to the Dennis Had days of Cary Audio Design, the customer service I experienced from them was miserable. I’d say to continue emailing them as they may get bored and respond to you sooner or later.

@heart_sounds , Kirk Owens was the absolute best! No matter how big or small my problem/question, he always had time to give me his attention. He inspired my loyalty to CAD.

Anyway, what you might do is to post your issue in the amps/preamps forum of this site, and maybe in the tech talk forum. My aptitude for electronics is limited, but there are some gurus on this site and they may be able to provide some help for you.

I betcha those 300 WE monoblocks sound great with the right speakers. A long time ago (before 9/11) I tryed out and bought a second hand SLP 90 at a Stereo place that was getting out of audio and getting more into HT. It was a win-win. They got rid of a preamp with a limited appeals for buyers in this area, and I got a great sounding preamp to replace the HT digital preamp I was using at the time. Then, a while after I bought that pre, they were having an open house event (beer, food, ect, I guess to try to clear out more stereo inventory and show off their newer stuff) and since I knew there was a pair of those little CAD 300 SE monoblocks that they had had for a long long time, I showed up to see if the owner would let me take them home for the weekend and let me play with them. I thought he would, seeing as how I had put $ in his pocket before, but he said no, he said he had someone coming to look at them.

I was a little surprised but not heart broken, as at the time I was getting great sound from a pair of ARC VTM 120s behind my new-to-me SLP90 . . . but I just wanted to hear what the SET experience was all about, and if they drove my speakers satisfactorily, I would have kept both pairs of monoblocks and used whichever depending upon which mood I was in. But I have a feeling that those little Carys would have had trouble with my 87 db B&W 805s, so probably no great loss.

But if I ever was going to start over, I think I’d look into SETs with high efficiency speakers. Occasionally I see a pair of Cary 805s come up on Cary’s preowned section and I think, "If I had a few thousand bucks I could justify spending . . ." but I recently bought a preowned SLP-05 so that kind of blew my spare $ situation for a while. . . .

Anyway, good luck to you on this, and as I typed, try posting your technical question on a different forum on this site, and maybe you will get some useful input.