I can't recall where I wrote about my new inbound SS amp for my Tobians so I'll just plug it here. Anyways story started year and something ago while I was using happily my Nagra VPA blocks but even during short summer stints here in CH it was completely unbearable to use them due to heat dissipation from the quad of 845 tubes. I got complains from both kids and my wife so system was 'down' for the majority of that period. That was a tipping point to approach a best friend of mine who happens to be a great amp builder and with some back and forth with Gunter what in a nutshell spec SS amp should have to properly drive the my FH12 Sigs and based on that input
@Superfi started to cook the amp. It took few months to and few iterations and I've heard first prototype on the board at his place last summer. And indeed it already that version with very rudimentary parts sounded great so decision has been made to proceed with parts ordering and chassis design. What we agreed is to go with the best of the best parts we can get like NOS Senkens, Mundorfs, Duelund, etc. I hope he might chime in with some technicalities but the amp is pure A class with no AB sliding hence around 18 to 20W with damping factor of around 15 hence the perfect match for high sensitivity speakers as it was the project 'brief'.
Chassis itself turned out to be absolutely magnificent for my eyes entirely CNC milled from the blocks of Al and even the heat sinks have been custom made. Anodization was done at the same facility where Karan Acoustics is doing their stuff so its just gorgeous. Entire unit is like 40kg in weight so quite a significant chunk of electronics.
Now sound wise - what we/I heard on the board and I was already happy with this final unit is just eating for breakfast. Upon turn on it is just dead by any means like a properly designed and produced amp should be - no hum, no buzz, no BS. I plug my entire head into the horn of 98dB and I hear absolutely nothing - just beautiful.
But once you press play button magic starts to happen and things get amazing - purity, dynamics, punch of bass even at low volume, beauty of mids and HF extension. I mean just everything works in a such a cohesion that you totally forget everything. Without any exaggeration and i even told this to
@Superfi that this might be one of the best amps I ever heard and owned. Its just freakin amazing and even more amazing that I'm really an all in tube guy. Ah I forgot - tone color is just how it should be - like I'm listening to the best tube amps.
What else can i say except that I'm over the moon happy with the decision to engage and move fw with this project.
Not to forget - all listening has been done with Horizon360 direct so once my Tobian SC12R preamp is back i believe all this might get one major step better.
Few pics and I'll attach few YT videos just for the basic basic flavor....
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