amp boy wrote:
Just gotta chime in on this, since all the transformer talk is quite exciting. I would have to hear and be told the difference.....
but bigger transformers, as i understand, usually lend more girth and kick, dare i say the impressive quality of a clean hard slap ??
Yes, that is very true generally. Right now we have a 36W output transformer on this amp, that's even dwarfing the power transformer.

However, with a more Partridge-like OT, we may be able to get a bit more detail into the upper frequency end of the tone, although it has *lots* of detail already. This is all under consideration at the moment, since you run into a law of diminishing returns thing, as you go to more and more expensive transformers. I doubt that even bats can hear frequencies as high as 118kHz.
amp boy wrote:
......., but the fixed bias issue, if possible to incorporate rear bias jacks for the option, if possible, of other tube types ?? just a thought i have been having when it comes to amps.
Unfortunately it's not that simple, as you need different voltages, and impedances, and hence transformers, for different tube types. However, once we've got this amp nailed down, then we may look at a bigger bottle version.
amp boy wrote:
I think i'm just becoming a KT66 nut. I got my 1st JTM45, and it's a keeper for me. I've never had the opportunity to play an amp like this before. I feel like peter green/fleetwood, but without the chops.
Brent also has a custom-built JTM45 now, which you'll see in the "family picture" earlier in this thread. He says the same kind of thing about his JTM45.

Those amps have some tone, especially for blues and early classic rock styles.
amp boy wrote:
... it's this feeling i got about....yeah if the 6V6's work...awesome, but how/or if a larger bottle would compliment ??
KT's...EL's....oh my or oh no ??
Well EL34s and KT88s were the stock tubes used in true Hiwatt amps. However, they're too friggin loud for most purposes, unless you want to peel paint off your walls or kill small birds flying by.

There's also other people already making those. However, I really like the idea of a KT66 Triwatt version some time in the future. It would be louder than the 6V6 version, without being quite as loud as an EL34 or KT88 one. However, at the moment our main focus is getting all the details of the TRIWATT Mk I nailed down right now, and getting it into production. So I wouldn't hold my breath for a Mk II coming any time real soon.