Fire Mist FM-1V

Chasing the mid-to-late '60s Marshall Plexi sound: edgy British crunch with brilliant overtones and that quick, fat attack that Plexi amps are known for. MusicRadar called it "savage but sensational" and gave it 4.5/5, noting the voicing runs bright (tameable with the passive tone circuit, which minimizes phase shift in the guitar signal compared to active designs).

Part of Free The Tone's Integrated Series (15th anniversary project), and the build details are obsessive. An IC Tone Plate, a machined metal shield over the ICs, dampens vibration and blocks noise. The brass control knobs aren't decorative: they reduce microphonic vibration in the potentiometer shafts and wipers. Even the enclosure dimensions and plate thickness were tuned for resonance. At 640g it's heavy for three knobs, but the weight is structural. HTS circuit, 10mA.