Red Roo 'Rockstar' Valve Guitar Amplifier Kit
The 'Rockstar' valve guitar amplifier kit is perfect for home use, small to medium-sized venues, or studio sessions.
The valve guitar amplifier kit offers a smart distortion setup with separate gain and volume controls, allowing you to fine-tune the exact level of overdrive you want—from a clear sound to powerful lead tones—at any volume level.
The preamp section includes multiple layers of progressive distortion, using several 12AX7 tubes in sequence, with alternating hotter and cooler settings. There’s also an effects loop between the preamp and power amp sections, with a switch to turn off effects if you don’t want them.
The power amp section uses a 12AT7 voltage amplifier and an NPN transistor phase splitter for the output stage. It’s a push-pull output stage with EL34, 6L6, or similar tubes, providing around 20 watts RMS into 4, 8, or 16-ohm speakers. With a different output transformer, it can be set up for a parallel/single-ended mode, offering about 8 watts of pure Class-A sound from two 6V6 tubes.
On the front panel, you’ll find high and low sensitivity guitar inputs, controls for Gain, Bass, Midrange, Treble, Volume, Presence, and Depth, enabling you to fine-tune your sound exactly how you like it. There’s also a large power-on light and Mute switch with an HT-ON indicator light. The rear panel has 6.5mm jacks for the effects loop and outputs for 4/8/16-ohm speakers, and an effects bypass switch.
Like the SE5 stereo amplifier kit, the power supply of the valve guitar amplifier kit uses an external 12V 10A medical-grade (Class 1) desktop power adapter, ensuring safety by avoiding high-voltage mains wiring and reducing hum by providing DC to the tube heaters.
Most smaller parts are mounted on a PC Board, which simplifies the wiring. Front panel controls can be soldered or plugged in, making setup and replacement simple.
Each Red Roo kit is expertly built with quality components, promising excellent sound and long-lasting durability. For the ultimate building experience, think about joining the weekend amp camp in the Blue Mountains west of Sydney.
If you have any questions about the Red Roo valve guitar amplifier kit, feel free to get in touch.
