This amp is collection only.
 
Here for sale we have a Marshall Origin 20 Guitar Amplifier Head. Using two ECC83 preamp valves, a single ECC83 Phase Splitter preamp valve, and 2 EL34 power amp valves, this head offers all of the grit and drive you would expect from a Marshall amp with the ability to reduce the output to maintain that same sound at lower volumes. 
 
Here's what Marshall have to say about the Origin 20;
"Powerstem, power reduction technology, allows you to have high or low power modes without compromising on sound quality.  
 
Powerstem works by reducing the voltage rails around the power amplifier rather than using our traditional pentode/triode reduction methods. This offers power reduction without changing the sonic character, providing optimum tone and performance regardless of the volume level required by guitarists.
 
Output Wattage: 20W, 3W, and 0.5W
Outputs: 3x 1/4" Jack Sockets (16 Ohms, 8 Ohms Load), DI (1/4" Jack)
Inputs: 1x1/4" Jack Instrument Input, Footswitch
Controls: Gain (Pull Boost), Tilt, Bass, Middle, Treble, Master, Presence, Powerstem Power Scaling
Effects Loop: Yes, 1x Series Switchable"