Jon Fleig's Homepage - DIY vacuum tube guitar amps, pro audio, original music.

I play guitar in a classic rock band
1993-present
The Advisors
A tube guitar amp I built from Simcha Delft's Moonlight design
5/2004
Moonlight
An all-octal Moonlight with twice the power output
10/2004
Arc Moonlight
My first scratch-built guitar amp
7/2003
SE Triode guitar amp with 6S4A
25W+25W Stereo Hi-Fi amplifier using
the National Semiconductor LM1875
3/2002
Stereo amp using LM1875
Prototype for the moonlight guitar amp 4/2004
Moonlight prototype
Dual channel tube bass preamp based on Fender blackafce design (ala Alembic F2B)
3/2004
Dual channel tube bass preamp
Pultec MB-1 tube microphone preamplifier clone prototype
12/2004
Pultec MB-1 mic preamp clone prototype
Tiny all-pentode tube guitar amp
1/2005
All-pentode guitar amp
Hold your head up: A recording of my midi sequence of Rod Argent's Hammond organ solo
2/2005
Argent solo
Dual channel tube mic preamp using Pultec MB-1 circuit
4/2005
Dual channel tube microphone preamp

Disclaimer:  Vacuum tube circuits operate at high voltages.  Contact with circuit components or wiring may cause serious injury or death.  High voltages may remain present in tube equipment for a long time, even if the circuit is turned off or disconnected from the mains voltage.  Do not attempt to repair or build vacuum  tube circuits unless you fully understand the safety principles and possess the technical craft required for dealing with high voltage mains-operated equipment.