The TH30 is a twin-channel valve head built around four EL84 power valves. The Clean channel has Volume, Bass and Treble controls and is voiced for clear, articulate cleans that also work as a pedal platform. The Dirty channel uses a four-stage gain circuit with Gain, Shape and Volume controls, covering light breakup through to tight, modern high-gain distortion.

A three-position output power switch sets the amp to 7, 15 or 30 W RMS, which lets the power stage be pushed harder at lower volumes or run with more headroom on stage. The channels are footswitchable.

The signal path is all valve, including a valve-buffered effects loop intended for time-based pedals and external processors. Speaker connections cover one 8 Ω, one 16 Ω or two 16 Ω cabinets. The head is available in Orange or Black finishes.