TECH 21 BOOST CHORUS PEDAL Chorus you can step into FOR: Preaching to the choir. Tech 21 pioneered tube amp emulation with their legendary Sans Amp. Since then they’ve rolled out a series of smart products, which now includes the Boost Chorus. In classic Tech 21 style, the Boost Chorus does a brilliant job of emulating a number of the most significant chorus pedals of yesteryear, while also providing a wide range of features to craft your own sounds....