Re: Thinking about buying a THD Flexi...opinions?
I played through one at the winter NAMM show this year, great sounding amp, plenty of volume and punch, two channel - both excellent sounding, swapping tubes out isn't as easy as with a Bi-valve, you'll need to rebias (done easily with test ports on the amp) if you swap tubes, but like the Bi-valve you can use different types of tubes in combination with one another, great sounding amp. I've owned a uni and a bi-valve - both have their good points but I think the Flexi is the best sounding of the amps THD is making (although the univalve with a NOS Mullard EL34 is one awesome sounding amp).