The preamp circuit is pretty simple ... making for a serviceable and easily achievable way to chase that elusive “valve sound.” There is much discussion among audio enthusiasts about the ...

It’s a simple preamp circuit that has graced the small-signal ... No special “warm valve sound”, but it did give me the momentary cachet of a pair of glass tubes on top of the stack.

A gorgeous-sounding emulation of a rare vintage valve preamp circuit, but the UI and UX don’t reach PSP’s normal standards. Input gain range limited. Plugin window needs focus. Insufficient indication ...

Bonawatt's Class A and Class D amplifiers with valve warmth and "Polish precision" are now available in the UK.

The audio circuit has improved too, with revised components and circuit ... Just make sure they’re seated properly before you power up the amp, though. The smaller, preamp valves are pre-fitted, so ...

Valve life varies, and usually these devices need changing regularly. Preamp valves (depending on circuit design) tend to last around 10,000 hours – but Quad quotes a figure of 60,000 to 100,000 hours ...

BASED upon the lecturing experience of the author, this book presents an outline of the theory of the operation and design of thermionic valve circuits ... and its use as an amplifier, oscillator ...

It will be interesting to see how the EL34, a valve integral to the sonic fingerprint of modern Marshalls, performs in different livery and in combination with a different preamp circuit. In the ...