Used Boss AD-8 Acoustic Processor

The BOSS AD-8 Acoustic Wave Processor is a floor-based acoustic floor preamp and modeling processor designed to convert thin, quacky undersaddle piezo pickup signals into warm, natural, miked-acoustic tones. Built around Roland/BOSS's COSM (Composite Object Sound Modeling) technology, it reconstructs the body resonance, string harmonics, and microphone dynamics of high-end acoustic guitars.

Core Features & Modeling

• 6 COSM Acoustic Guitar Models: Emulates six classic high-end acoustic body types (including dreadnoughts, jumbo bodies, and small-body acoustics like Martin and Gibson styles) to reshape the response of standard piezo pickups.
• Body & String Enhance Controls:
  • Body: Adjusts the simulated acoustic body resonance and airiness.
  • String Enhance: Controls the transient snap and string brilliance, helping smooth out plastic-y piezo transients.
• Acoustic-Tuned Effects & Shaping:
  • 4-Band EQ: Includes a sweepable parametric mid-control for precise notch filtering and tonal balancing.
  • Reverb: Studio-grade reverb engine calibrated specifically for acoustic instruments.
  • Auto Anti-Feedback: Onboard notch filter to target and eliminate live performance feedback instantly.
• Onboard Utilities: Includes an integrated chromatic tuner with mute output and 4 preset memory locations for saving and recalling patch settings on the fly.