Electro-Harmonix Q-TRON PLUS Envelope Filter with Effects Loop powercon The B1 FOUR/B1X FOUR can

The B1 FOUR/B1X FOUR can operate with four AA batteries

Shock-mounted capsule

Sound Shaping Technology (SST) rings on the underside reduce unwanted frequencies and enhances attack

When paired with a smartphone

a single person can easily set up a large pro console

Electro-Harmonix Q-TRON PLUS Envelope Filter with Effects Loop powercon The B1 FOUR/B1X FOUR canSame design as the original EHX Q Tron but with an extremely useful Effects Loop and an Attack Response Switch. The Effects Loop gives the musician the ability to place an additional effect, or chain of effects between the EHX Q Tron Pluss preamp and filter section without changing the envelope drive. This is particularly important with most distortion devices, as most all do not have much of an amplitude envelope. The FX loop will also fire up your