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Tech 21 SansAmp Fly-Rig Acoustic

Comp, EFX, Boost & Tuner

Written by

Elliot Stent

The Tech 21 SanAmp Fly-Rig Acoustic is the perfect companion for acoustic players looking for a portable, all-encompassing pedal floor unit. Boasting Tech 21's renowned SansAmp preamp technology, a built-in tuner, a compressor circuit, boost, and other effects such as reverb, delay and chorus, this unit is all you need to get the most out of your setup.


Tech 21's SansAmp preamp is an industry standard, used most notably by bass players for giving them a solid, punchy and defined tone. With a tailored circuit to suit acoustic guitars, the preamp in the Acoustic Fly-Rig can really let all of the tonal qualities of your electro-acoustic sing through with amazing clarity and warmth. A raft of EQ controls offer great tweakability, not to mention a footswitchable boost function that can give your signal a pure kick of extra volume.


The Acoustic Fly also features some other essential effects to really embellish your sound. The compressor can make picked arpeggiated sections sound pristine and clear, or you can set it subtly for dynamic consistency when playing strummed chord progressions.

Other effects include a high-quality reverb, that can add some sweet artificial ambience if you're playing in a small venue with a dry room sound. A switchable delay/chorus section can let you add some old-school tape-style delay to your signal, or an angelic chorus that can emulate the sound of a 12-string with excellent conviction.

The built-in tuner is the cherry on the top, allowing you to quickly retune your instrument between songs or sessions. All of these functions and effects have their own dedicated footswitch too, letting you change up your sound on the fly. Hence the name!  

Here's what Tech 21 say about the SansAmp Fly-Rig Acoustic:

The Tech 21 Fly Rig Series is known for travel-friendly, grab-and-go pro tones for live and studio dates. The latest addition to the series is the Acoustic Fly Rig. Specifically tailored to complement the particular nuances and traits of acoustic instruments, the Acoustic Fly Rig provides round-the-clock ease and confidence for any gig, anywhere and everywhere you perform.


The all-analog SansAmp is, of course, its center point. Sweepable, semi-parametric, active EQ controls provide professional grade tweakability for any situation. There’s a Notch Filter, sweepable from 70Hz to 350Hz, designed to diminish the sensitivity for feedback caused by the resonating, low frequencies of acoustic guitars. A Low Pass Filter, sweepable from 16kHz to 1.5kHz, rolls off undesirable frequencies and artifacts.


Independent Boost function, up to approx 12dB, for solos. Includes a wide mid-range boost for improved clarity.


COMP, for compression, utilizes old school, all-analog, FET-based technology, which is inherently warmer, more transparent and musical. 


Dedicated Reverb function emulates the rich ambiance of open spaces, ranging from room to hall. 


DLA emulates a warm sounding analog delay. It features Time and Repeats controls and dedicated Tap Tempo footswitch. CHR is a preset chorus based on pitch-shifting technology for a more natural, 
12-string-style sound. 


Chromatic Tuner is within the EFX section. You simply hold down the TAP/TUNER footswitch to engage the Tuner, which simultaneously mutes the signal path.


  • Phase Flip switch flips the signal 180 degrees in phase to help combat feedback
  • 1/4-inch 1megOhm input 
  • XLR output with ground lift
  • 1/4-inch low impedance output
  • Headphone button switches the 1/4” output into headphone mode
  • Rugged, all-metal housing
  • Metal footswitches and jacks
  • Silent-switching, custom footswitch actuators
  • Utilizes included 9V DC power supply, 200mA
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