[Marcel]’s low-voltage tube amp design might spark your interest. The design operates with a B+ (plate) voltage of only 40v, making it less intimidating and dangerous than many other amps that ...

This amp design uses a plate voltage of 12, although the 12AU7 can handle up to about 330. Since the 12AU7 is of the Twin Triode variety, one tube can be used to amplify both a left and ...

Self-taught boutique builder Charles Henry puts musicality first with his designs, winning fans including Grace Bowers and ...

It utilized four EL34 output tubes, one GZ34/5AR4 rectifier ... have gone out of production). “The amp can be restored with its original design intact or, if one desires, it can be heavily ...

Surely you noticed the tubes. The HTA100 is a “hybrid” design that uses tubes in the preamp section and a transistor-based amp stage to do the tough work of driving the speakers. Tubes have a ...

Landreth's D25 might be a single-channel affair with old-school aesthetics but with six onboard virtual cabs, MIDI connectivity and switchable 25W/5W power it is all about modern functionality ...

Synergy has unveiled the SYN-20IR, a tube amp head with a revolutionary design that allows players to swap preamp modules in and out, making for a fully customisable guitar amp – and this head has ...