Custom 112 Combo Guitar Amp Made by ‘Overbuilt’ – Owned by Rick Holmstrom

Custom 112 Combo Guitar Amp Made by ‘Overbuilt’ – Owned by Rick Holmstrom


Out of stock

This "Overbuilt" Custom 112 Model Guitar Amplifier was built for Mavis Staples' Guitarist Rick Holmstrom by Rick Seccombe, formerly of Matchless, from a Matchless C-30 chassis. The idea was to combine the preamp section from early 50's amps that featured octalpreamp tubes (Valco,Gibson,TV front fender) with the output section of a Vox AC-30. It has 5V4 rectifier tubes (for maximum sag), 2 6SL7 octal preamp tubes (for their big open sound), a 12ax7 phase inverter and 4 EL84 power tubes!

The Overbuilt has the classic AC-30 top boost style controls ( volume, bass, treble, and cut ) with additional controls for bias modulated tremolo (on/off footswitch included) and a VVR (variable voltage regulator) which acts as a master that doesn't suck.


Check out the YouTube Link attached to this listing - A recording of Rick using the amp on a Mavis Staples tune!

Front Controls L to R:


Backside Switches:

2 Speaker Jacks

Rotary Impedance

Full/ Half Power

Speaker Phase


Speaker is a "Scumback Scumnico", which is a beefed up 65 Watt version of a mid 60's silver bell Celestion/Vox Speaker

According to Rick Holmstrom, "The green nuclear pilot light is some sort of military surplus jewel Jeorge Tripss gave me. The Bigger green nuclear light was made to match it."

For International Shipping Please Contact Us!