Moscode 402au vs Butler TDB2250 vs McIntosh MC275

Another option is to buy another MC275 and run them as mono at 150W each. If you like the Mac mid range, it might be something to consider.

I’m curious too…. Tvad once had a 401 Moscode, I believe. He might chime in on what he liked or disliked about it…

I have a TDB 5150. I use it as a 2ch amp now and then. I like what it does overall. I even thought about getting the TDB 2250. The Butler hybrid amps offer a good deal of bass on my Sonata IIIs in a closed off 2400 cu ft room approximately. I really do not need to use my sub, though often I will…. As it’s my preff. Though it’s actually not in fact prerequsite.

I will say from a “Gee I sure do like flexiblity” stand point, the MosCode amp always looked good to me on paper given the ability for user tube rolling.

The Butler doesn’t allow for any user tube replacements, even though it uses one in each amp, though not for gain purposes. They also need to be biased by Mr. Butler. So with the Butler it’s pretty much a what you see is what you get…. Akin to an SS amp.

The Butlers however are cost effective…. Or not terribly pricey… except the one he makes using the 300b tubes.

It’s an easy amp to listen to, own, and operate. Rock steady performance, and not pricey. It should mate with your Calypso easily. It will rock too. Your current tube setup in your preamp and the power cord on the amp should enable you a very quick, fast feel, for R&R music. I play a little Def Lep, ZZ Top, and so forth thru mine. No probs.

It comes down to what you really want/need. Flexibility? Hands off operation? Your tastes, and budget.

what kind of speakers do you have?

Leben CS-300 with Sylvania driver and output tubes, plus Zu Mother power cord, Zu Varial IC, Zu Druid and Zu Method Sub.

Right now, listening ZZ Top, Billy F. Gibbons´s guitar bites your shoulder.

Daniel