The Dark Terror 15 is a single-channel, all-valve guitar head with three top-panel controls: Gain, Shape and Volume. It uses the Tiny Terror platform as its base and pushes it towards heavier, darker high-gain voicings, while still covering crunch, edge-of-breakup and clean sounds.

Tone shaping is handled by the Shape control, a single knob that revoices the EQ section. It moves from scooped, tight modern tones to mid-forward classic rock sounds. Output power can be switched between 15 and 7 watts RMS, which is useful for recording, practice or smaller rooms. The power stage uses two EL84 valves and the preamp uses three ECC83/12AX7 valves.

The head has a valve-buffered effects loop with its own ECC81/12AT7 valve, intended to keep pedals sounding clear under heavy gain. Speaker outputs cover 1x8 ohm, 1x16 ohm or 2x16 ohm cabinet loads. The unit weighs 5.65 kg and measures 30.3 x 19 x 15.3 cm. FS-1 and FS-2 footswitches are listed as optional accessories.