Five-watt push-pull amp using a 12BH7 twin triode for the power stage.
5Y3 valve rectifier.  The pre-amp has an American Deluxe clean followed by a British Deluxe overdrive, with a valve driven Reverb.  Designed for home studio recording, the amp has a Jazz/Rock switch, Bright and Deep switches, and switchable Overdrive.
The 12″ speaker is a well-worn in Sanyo unit found in a set of roadside hi-fi speakers.
The combo box was picked up from a cash convertors sale for $10 and re-covered.   
The chassis is from an old transistor guitar amp, so I’ve also got another speaker to recycle later on. 

A rebuild of an old amp chassis using the original transformer and chassis set.
Valve rectified 6L6GT 35 watt power amp
Gain Bass Treble Volume
Octal pre-amp valves
Cabinet with Vintage 15″ speaker

The “Ampenstein” amp head is an all pentode amp, made up of two pentode gain stages (EF86 and 6J7) with a Baxandall tone stack (bass and treble) and a triode strapped 6J7 phase splitter driving a pair of 6L6GT power valves for 25 watts.  GZ34 valve rectifier power supply.  
The amp is finished with the steampunk aesthetic, with a brass plate etched using electrolysis and mild acid.  The pattern behind each control knob is taken from the 2010 season of crop circles in the UK.  If Doctor Frankenstein played guitar, he would have used this amp.

“Ampenstein can achieve controlled distortion from ANY and ALL of the valves from preamp to phase inverter to power section!   I only had a half hour to mess with it last night, but there are at least 3 or 4 tonal flavours available seperately – one from from each valve, and these can be combined for even more flavour.“

Combo cabinet and satellite speaker cabinet, each with an 
Australian Magnavox 12″ alnico speaker.

Two channel amp with 15 watt 6V6 power amp,
GZ34 or 5Y3 rectifier, power stage tremolo injection.
British Invasion and American Deluxe with ‘wreck style overdrive.
112 cabinet with Weber 125150B Vintage Ferromax speaker.

Single channel amp with 15 watt 6V6 cathode biased power amp with GZ34 rectifier.
Power stage tremolo injection.
American Deluxe with reverb and Texas overdrive.
Combo cabinet with Weber 15A150 15″ alnico speaker.  
This amp was inspired by the 6G16 Vibroverb circuit, with some mods to suit the customer’s requirements.

Standel Clean, Tube Reverb, Four-Way Switch tone control
45 watt E6L6 valve rectified, cathode bias power stage
15″ reconed JBL speaker

BF Clean, Tube Reverb
45 watt EL34 valve rectified, cathode bias power stage
12″ Weber Alnico speaker

6V6 18 watt cathode-biased power amp with GZ34 rectifier.
Optimised for jazz and hollow body guitars, the tone stack has Gain, Bass Middle Treble and a rotary Hi-Treble (instead of the traditional Bright switch), reverb Dwell and Mix, and Volume. 
Weber 10A150P and 10F125P 10″ speakers in a front ported cabinet.

EL34 20 watt cathode biased power amp with GZ34 rectifier.
Optimised for jazz guitar, the tone stack has Gain, Bass Middle Treble and a rotary Hi-Treble (instead of the traditional Bright switch), reverb Dwell and Mix, and Master Volume. 
Weber 12F125S 12”speaker

EL34 cathode-biased triode power amp with solid state rectifier. 
30 watts mostly Class A.  
Optimised for jazz and hollow body guitars, the tone stack has Bass Middle Treble and Hi-Treble (rotary control instead of the traditional Bright switch), reverb Dwell and Mix, and Volume.  Dark jazz switch.  Compress control (an idea borrowed from Gibson amps, needs to be refined).
Weber Neomag 10″ speaker with aluminium dome.

60 watt head inspired by the Ampeg V series amps.
Two channel input (Normal and Lead).
Baxandall Bass and Treble. 
Variable centre (three switch) Middle control.  
Belton short tank three-spring reverb with Dwell and Mix controls.
7027A power tubes.