Four classic boost circuits in one box: silicon treble booster, JFET preamp, op-amp, and MOSFET.

1176-style compressor with Rangemaster boost, 3-band EQ, and 23V internal headroom.

Treble booster in Rangemaster style. Designed for pushing amps into overdrive.

Buffered treble enhancer using the Baby Pink Booster buffer—restores clarity lost in your chain.

JFET Class-A preamp/booster with parametric mids, treble control, and impedance switch for Rangemaster-style tones.

BJF dual booster combining Little Red Trebler and Red Rooster. 40dB boost, 15dB treble boost at 4kHz.

Sunface fuzz meets Beano Boost treble booster. Tri-germanium circuit, two true-bypass sides.

Treble booster with master volume and bass control, capturing Rangemaster tones with added flexibility and tube-like feel.

Six-mode germanium fuzz and booster channeling every legendary British fuzz circuit.

Versatile OD1-based overdrive functioning as clean boost, treble booster, or standalone drive.

R.J. Ronquillo signature 3-in-1: silicon treble boost, Herculean V2 overdrive, PT2399 slapback echo.

Kirk Hammett distortion with treble booster front-end. Hi/Lo switch for rhythm or lead saturation.

NOS Soviet germanium treble booster with pickup simulator, bias control, and 3-way range switch.

Rangemaster-style treble boost with Custom Shop refinement.

Rangemaster treble boost with NOS OC71 germanium transistors. Limited to 700 units, sold out fast.

Treble booster with hand-selected NOS 2N2222A transistor. Three-way toggle: treble, mid, or fat voicing.

Updated treble boost with attenuator—hotter transistor for more gain, Dallas Rangemaster DNA.

Treble booster with hand-selected NOS 2N2222A transistor. Three-way toggle: treble, mid, or fat voicing.

Cesar Diaz Texas Ranger clone. Rangemaster-based treble boost with 3-way voicing: glass, fat, or growl.

DIY PCB for building a Dallas Rangemaster clone - the 1965 treble booster used by Brian May and Tony Iommi.

Treble booster with aggressive high-frequency enhancement. Offers clean gain boost with minimal signal coloration.

Dallas Rangemaster recreation with hand-picked germanium. Named for Clapton's Bluesbreakers album.

Dallas Rangemaster treble boost with NOS germanium transistor and 3-way input cap switch for bass control.

Multidriver spanning treble boost to crunchy distortion to fuzzy sustain—all-in-one gain shaping with 9V DC.