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SOLD - THD BiValve 30 amplifier head - £550
More clearing out, now time to whittle the amp collection down...
This is a THD BiValve 30, the bigger brother to the more common UniValve. THD didn't seem to make these for very long - my guess is that they specced so much good stuff that they didn't make much money on each one sold. It has an FX loop, transformer-isolated Line out, built-in THD HotPlate attenuator, Hi/Lo voltage switch, and can use almost any preamp and (octal) power valve in any combination. 2/4/8/16-ohm outputs.
It's almost impossible to describe the tonal range, but I'll try. Plug
into the low-gain input and you are using just one preamp valve and if
you keep to a 12AY7 (etc) and run into bigger octal valves (say 6L6s),
it's very clean, sort of 'spanky'. Use the higher gain input and now you
can use two ECC83s and run into EL34s in the power stage for way more
gain. We're not into djent metal, but just about any popular classic
rock. And there are tweedy tones in-between with other combinations.
You are totally free to mix and match the valves, as the photo above shows. There's no biasing to do, just use an oven glove for when you're valve-swapping. The only thing to bear in mind that if you use 6V6 power valves, you must use the Low Voltage switch (you can use this with bigger valves, too, if you want to brown out the sound some more).
There's the original Guitarist review here:
http://www.thdelectronics.com/pdf/guitarist_bivalve.pdfAnd here's a link to THD's sound clips:
http://www.thdelectronics.com/Bivalve_rave_popup.htmlPrice £550 with a brand new set of JJ ECC83s and 6L6s
Collect from North Cambridge, or apprix £11 shipping to mainland UK
This is a USA-sourced amp, and I will include a stepdown
transformer for use on UK mains (200VA means that it runs nice and cool).
Comments
GLWTS.
cheers
* Eventide H9 Max
* dual humbucker, solid body double-cut guitar (no trem, tallish frets, full working order)