Here are some valve amps made for clients around Australia.
18RR107 Acoustic Combo
18 watt 6V6 cathode biased amplifier with GZ34 rectifier. Pre-amp inspired by Bob Crook's Standel 25L15 amplifier with
Normal/Lead inputs, separate Gain controls, Contour, Baxandall Bass and Treble,
jazz/rock switching, switchable Master Volume. Inputs optimised for
active/passive acoustic guitar pick-ups. Speaker-side and pre-amp line-outs. Tube transformer driven 3 spring short-tank reverb with
Dwell and Mix controls. Weber NeoMag 10" speaker and Rola hi-frequency speaker
in a front-vented cabinet.
VT40i 60R Head 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.
Stereo power amp with two channels, based on the Magnatone M14 circuit with true stereo vibrato.
Stereo 6V6GT 20 watt power amps, each with cathode bias and GZ34 valve rectifier. Two channel pre-amps with Baxandall Bass and Treble controls, Gain and Master Volumes.
Vibrato Speed and Intensity controls with mono/stereo switch. Two x Weber 10" alnico speakers and two side-facing 6" speakers with whizzer cone and crossover.
Stereo Vibrato 20+20RV12+12
Same as the amp above, but with separate cabinets.
Combo cabinet and satellite speaker cabinet, each with an Australian Magnavox 12" alnico speaker.
MA 35i Harp Amp 35R1288
35 watt cathode biased harmonica amp inspired by Masco public address amps. 6L6GT power tubes with a choice of valve rectifiers (GZ34 for a tight and punchy tone or 5Y3 for a smoother, warmer tone). 6N8/EBC41 pentode gain stages with high gain and medium gain channels, with very high impedance inputs optimised for all harp mics including crystal elements.
Bass and Treble tone controls, Channel Gain and Master Volume. Octal 6SN7 floating paraphase phase splitter for zero microphone feedback.
Weber speakers - 1 x 12" 12A125S, 1 x 8" 8A125O and 1 x 8" 8A100T (as used by leading US harp amp makers).
Overdrive Five 5RR12
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.
Steampunk Guitar Amp 25R
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.
Vibroverb Custom 15 (15RR115)
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.
Studio Twin 15R112
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.
Deluxe Overdrive 35RR212
Two channel amp with overdrive and reverb American Deluxe and British Deluxe channels 35 watt EL34 power amp, GZ34 valve rectifier Combo cabinet with Weber 12A150T 12" speaker Extension cabinet with Celestion G12H 12" speaker
Blues Fifteen 15R110
American Deluxe single channel 15 watt EL84 amplifier with solid state power supply Celestion Tube Ten 10" speaker
This amp started its life as a 7 watt 6BM8 amp, but the customer needed more power, so it has now been converted to EL84s for a 15 watt output.
Blue Opal 5R112
Single channel British Invasion with Volume, Bass, Treble 6BM8 five watt push-pull amplifier with EZ81 valve rectifier Weber 12A125A 12" speaker in mini-stack Laser etched panel with retro style graphics based on an old radio
Jazzaphonic 25RR112
Vintage jazz clean channel (Contour, Bass, Treble) Switched British Deluxe Overdrive with Drive, Level, Bass, Middle, Treble Accutronics Reverb with Dwell, Tone and Mix KT66 Class A 25 watt amplifier, choke filtered, GZ34 rectifier, octal signal tubes, Weber 12A125A 12" speaker
American Deluxe Blues Five
Deluxe 'wreck style single channel Duet 6BM8 5 watt amplifier
Amplifier shown with the same speaker cabinet as above.
British Classic JM45R
Bright/Normal British Classic Duet KT66 45 - 50 watt cathode bias power stage GZ34 valve rectifier or solid state (switched)
This amp was rebuilt using an old chassis and vintage Australian Ferguson transformers
British Invasion AC15R112
Dual channel combo amp Channel One: British Invasion top boost Channel Two: Top boost tone stack with EF86 pentode single gain stage Duet EL84 15 - 18 watt power stage, 5Y3 or GZ34 valve rectifier Celestion 12" speaker
American Classic AA764RR108
Single channel combo amp Champ circuit with small tank reverb Single 6V6 5 watt power stage, 5Y3 rectifier, 6BM8 reverb amp, Weber 8" alnico speaker
GA15R110 Two channel combo amp Gibson RA15 circuit with small tank reverb Duet 6V6 18 watt power stage, solid state rectifier 1 x 10" Celestion speaker
British Deluxe Single Ten 10R110
Single channel combo amp British Deluxe with small tank reverb Single 6L6/KT66 10 watt power stage, solid state rectifier 1 x 10" Weber Silver alnico speaker
British Deluxe Single Ten 10R110
Single channel combo amp British Deluxe with small tank reverb Single EL34 10 watt power stage, solid state rectifier 1 x 10" Celestion speaker
British Deluxe 18R
Single channel small head British Deluxe with small tank reverb. Duet 6V6GT 18 watt power stage, solid state rectifier lacquered timber cabinet
American Deluxe 8R208
Single channel combo amp American Deluxe with small tank reverb Single EL34 8 watt power stage, solid state rectifier 2 x 8" Celestion Super Eight speakers
Custom Blues 15RR210
Dual Overdrive amp American Deluxe and British Deluxe, plus overdrive tremolo and reverb Duet 6V6GT 15 watt power stage GZ34 valve rectifier 2 x 10" Celestion speakers
British Invasion AC45-112
Single channel combo amp British Invasion Duet EL34 45 watt power stage solid state rectifier 1 x 12" Etone speaker
Kestral Amp 45RR210
Two channel (American Deluxe and British Classic with four-way tone switch) with overdrive, valve reverb (Accutronics tank) Quad power amp with a pair of EL34 and a pair of 5881 valve/solid state rectifier switch, 45 watts Power stage tone selection using different combinations of triode and pentode mode 2 x 10" Celestion speakers Meranti cabinet with blue vinyl covering Custom gold plated edge corners and leather handle brackets
Harmonica Amp 35RR508
Single channel harp amp. This amplifier includes features especially tailored for the harp player, including a single channel especially voiced for harmonica, multiple impedance inputs to cater for every type of microphone, reverb, 35 watt power output stage using 6L6GC power tubes with a "thickness" phase splitter, GZ34 valve rectifier, 5 x 8” Celestion speakers in a head/stack configuration.
Blue Angel Harmonica Amp 30R608
Two channel harp amp. This amplifier includes features especially tailored for the harp player, including two channels optimised for harmonica, multiple impedance inputs to cater for every type of microphone, 30 watt power output stage using 6V6GT power tubes with "thickness" phase splitter, valve rectifier, 6 x 8” Celestion speakers.
Custom Blues 15R115
Two channel amp American Classic and American Deluxe Duet 6V6GT 15 watt, valve rectifier, 1 x 15" speaker
Mixmasters Custom Studio 20RR210
Dual Overdrive amp American Deluxe and British Deluxe, plus overdrive, tremolo and reverb Duet 7027A Class A 20 watt power stage, valve rectifier 2 x 10" Celestion speakers.
Metamorphosis Head Amp Rebuild
Two Channel amp British Classic Duet EL34 45 watt power stage, valve/solid state rectifier
Hammond Amp Rebuild
This is a rebuild of a 1938 Hammond B3 power amp with a single channel pre-amp.
Quad 2A3 direct heated triodes, 30 watts. This is as good as it gets!
Valve Pre-Amps
19" rack pre-amps can be built using low profile transformers that can fit in a 1U rack pre-amp. There's enough space to easily fit a two channel pre-amp with your choice of tone voicing.
10R110
15RR210
30R608
20RR210
