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 ...

[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 ...

It utilized four EL34 output tubes, one GZ34/5AR4 rectifier ... have gone out of production). “The amp can be restored with ...

An input stage comprising a differential amplifier in the form ... Dyer, “Simulation of Vacuum-Tube Triodes in SPICE: Nonlinear Models,” Electronic Design. 8. “Heathkit Manual and Schematic ...

Fender and Jack White have teamed up for an epic collaboration featuring not one but two signature guitars that reimagine two ...

Opinions expressed by Forbes Contributors are their own. Technology journalist specializing in audio, computing and Apple Macs. Probably one of the most celebrated amplifiers ever made—the 33/ ...

As a service to our readers, we're providing the LTspice files used in Dr. Dyer's article on simulation of the 12AX7 and the K2-W vacuum-tube op amp ... to our Electronic Design Today newsletter.