Warm Audio Dirty Boy Jr. Booster Pedal
Amp-Like Overdrive Pedal With Variac Touch-Sensitivity & Emulated Balanced Output

Overview
The Original Dirty Boy “Preamp” Overdrive & T.A.E. Amp Sim Circuit Rebuilt Into A Pedalboard-Friendly Format
A Hand-Built Boutique Legacy, Recreated With Dirty Boy
Founded by Alex Saraceno, Dirty Boy Pedals built its reputation one pedal at a time with handcrafted designs that blended vintage inspiration with original circuit refinements. Among the company's most innovative creations was the Dirty Boy Preamp, a boutique pedal that combined touch-sensitive overdrive, analog tube amp emulation, and speaker simulation into a single compact unit. Dirty Boy partnered with Warm Audio to faithfully recreate the acclaimed Preamp circuit in the Dirty Boy Jr. Overdrive, bringing its sought-after amp-like tone and feel to more players in a compact, pedalboard-friendly format.
Boutique Amp Tone, Expanded With Modern Flexibility
The Dirty Boy Jr. Overdrive captures everything players love about the original Dirty Boy Preamp while adding the versatility demanded by today's stages and studios. Powered by proprietary all-analog T.A.E. (Tube Amp Emulation) technology, it delivers touch-sensitive response, tube-like harmonic saturation, and dynamic cleanup while functioning as an overdrive, preamp, or standalone amp simulator. Dedicated Gain, Tone, Volume, and Variac controls shape everything from transparent boost to saturated vintage-style breakup, while the speaker-emulated output makes it easy to connect directly to mixers, interfaces, front of house systems, and FRFR speakers. True bypass operation, authentic Dirty Boy styling, and rugged road-ready construction complete a pedal built to inspire anywhere you play.
Tone Applications
- Low Gain OD (Sparkle & Shimmer OD): Add a little sparkle and shimmer to otherwise dull clean tones.
- Mid Gain OD (Amp-Like OD Tones On The Board): Added touch-sensitivity and increased gain with stronger pick attack.
- Edge-Of Breakup Amp (Amp Sim With Analog Breakup): Plays like a real amp at the edge of breakup.
- Cranked Amp Tones (Mid-Gain Amp Tones): Mid-gain, throaty tone with saturation & natural compression.
Specifications
Product Description & External Specs
- Fully Analog Tube Amp Emulation Preamp Designed For All Studio & Live Direct Applications
- Authentic Dirty Boy “Preamp” Circuit
- Use As A Standalone Amp Simulator, FX Loop Preamp, Or Tube-Style Boost / Overdrive
- Touch-Sensitive Response With Tube-Like Harmonic Saturation And Dynamic Cleanup
- Metal Enclosure with Authentic Dirty Boy Boutique Styling
- 1/4" Input (Inst) And Output (Amp) Jacks
- Dimensions: 4.8” L x 2” W x 2.6” H (12.2 x 5.1 x 6.5 cm)
- Weight: 0.6 lb (0.27 kg)
- 5-Year Warranty
Components & Internal Specs
- Gain, Tone, Volume, and Variac Controls
- Powered By Proprietary T.A.E. (Tube Amp Emulation) Technology Developed By Danny Gomez
- Variac Simulator Delivers Dynamic Sag, Compression, and Voltage-Starved Fuzz Textures
- Preamp Output (Instrument) and Speaker Emulated Output (Line) Connections
- Speaker Emulated Output Voiced After A Closed-Back 4x12 “Greenback” Cabinet
- Input Impedance: 1 MOhms
- Output Impedance: 6.5 KOhms
- True Bypass Operation | Standard 9V Center-Negative Power








