H&G Amplifiers

H&G Amplification is an manufactory that designs and manufactures music amplifiers, speaker cabinets and boutique guitar effect pedals.

Low voltage tube preamp



It’s a famous tube amplifier’s bright channel with ECC83/12AX7 tube. We had an idea to operate it to low voltage.


Low voltage tube preamp.


Because it was quiet low we had to complate it with a J201 transistor.

Sound test:

Clean tone:

Gain knob 3/4 positions • used: GreenZ pedal

Dry and biting tones/full gain  • used: GreenZ pedal