Anyone heard the Consonance Cyber 800 amps?

Mrjstark, thank you for your thoughts on the Cyber 800. You were incredibly thorough!

The only thing I can add is that the Cyber 800 does NOT accept 6550 or KT88 tubes, or KT77 (at least, JJ KT77) for that matter. EL34 and 6CA7 variants are compatible.

Thank you,
Joe Trelli
UltraViolet Audio
North American distributor for Consonance

Please don't worry about it, Mrjstark!

I just don't want anyone ending up with a 4th of July scenario. I have personally tried the JJ KT77, Sovtek 6550, EH KT88, and JJ KT88 in the Cyber 800 tube monoblock amplifiers. None are compatible due to the bias settings. It will be apparent within about 5 to 7 seconds this isn't something that's going to work.

All of the EL34 and 6CA7 I have tried have no issue.

The Cyber 800 uses a cathode bias configuration. While you cannot run the other tube types, it's quite convenient in that there is nothing to adjust.

Stephen is no longer the distributor or a dealer for the line.

Thank you again!

Saki70, yes, that is the case. There are no bias adjustments with this amplifier. So long as you make sure you stick with EL34 and 6CA7 output tubes, it's simply plug and play.

Hello, Mrjstark!

Some of the other Cyber amplifiers actually are manual bias. In fact, because of this feature, which I consider a convenience, I have modified my own Cyber 211 amplifiers to be able to run both 211 and 845 output tubes without having to perform any of the usually required surgery. Flip the switch, change tubes, rebias, DONE.

The 211 is more open, detailed, and forward, possesing that midrange magic. The 845 is more romantic and full-bodied, with a lot more in the way of low frequencies. They make for a far more disparate sound than I would have ever expected. I like the fact of being able to change so easily from one to the other to suit my mood, music, ancillary components, etc. I could never do this if the amps were autobias.

M. Stark, thank you for your inquiry! Here are my answers to your questions:
1) Without a back-loaded horn type speaker, none of the 211, 845, or 300B variants can rock out like the Cyber 800. With a more traditional dynamic speaker, the Cyber 800 is the powerhouse of the group, no question.

That being said, with the right loudspeaker, you can do pretty well. I usually listen at 90 dB+, and my favorite amplifiers of the bunch are the Cyber 300B PSE, they have a level of refinement and delicacy unmatched by most any other amplifiers I've heard. Interestingly enough, they seem to mate best with traditional speakers. I like the 211 best with back-loaded horns (using Lowther type drivers) such as Lamhorns, etc., and the 845 seems to do the best with front loaded horns like the Consonance M15)

2) You and I are of the same mind. The only way to really answer the question is to try the combination. If you have the speakers, I'm willing to supply the amps so that we can give them a go

3) The short answer is that we can probably work something out for you

ps - I'm going away for a few days to the New Jersey shore, and if I do not respond to further inquiries, please accept my apologies in advance.