Rain Maker 15



The Rainmaker 15 SN009 is built from a 1960’s Hammond organ power amp chassis completely converted into an all tube guitar amp. This is a custom hand built circuit based on classic Vox 15 watt designs. Controls are master volume, tone and volume. The amp’s foundation is a Hammond power transformer, output transformer and filter choke. New power supply capacitors, carbon composition and metal film resistors and tested tone circuit components built point to point with terminal strips.

Amp produces both detailed cleans and high gain distortion with articulate note clarity typical of a class A cathode bias push-pull output section. Touch responsive and master volume allows high gain drive at a lower volume. The amp sounds excellent as a platform for effect pedals. Input and power supply grounded separately for low noise. 5Y3 Rectifier, 2 x 6BQ5/EL84/7189 output tubes. Many types of preamp tubes 12AU7,12AY7, (12BH7, 12AT7 phase inverter) can be used for desired level of gain, output volume and tone. New filter capacitors, carbon composition and metal film resistors, switchcraft output jack, marshall style high and low impedance input jacks, and Alpha pots.

Chassis dimensions: 12 L x 7 D x 6 H Front panel opening: 10 L x 2 1/4 H

Working and tested chassis built to order ready to be mounted in your own head or combo cabinet. Please allow two weeks for completion.



pilot light

master volume



high input

low input

Hammond 8 ohm output transformerHammond power transformerHammond choke

8 ohm speaker out

2 amp Fuse

120v AC power socket

1x 5Y3/5R4/5U4/5AR4/GZ34 Rectifier

2x EL84 Output

1x 12AX7/12AU7 Phase inverter

1x 12AX7 Preamp

A note to buyers: The Hammond chassis I build these amps from are becoming scarce and cost is going up so I have to raise selling price to offset the difference. Thanks for your consideration.

Amp will be securely packed for safe shipping via UPS ground to lower 48 states. Returns accepted within 14 days, buyer pays return shipping cost.

Please contact with any questions