Used Electro-Harmonix EHX Q-Tron Plus Envelope Filter Guitar Pedal QTron+ 1 Spot Pro Swell: This is the volume

Swell: This is the volume swell mode

the Space Delay delivers everything you need to create your next atmospheric masterpiece

TREBLE knob

Take on every playing situation with 23 guitar amps and nine bass amps

boosting from within

Used Electro-Harmonix EHX Q-Tron Plus Envelope Filter Guitar Pedal QTron+ 1 Spot Pro Swell: This is the volumeMint, all original packaging, as new Includes U. S. Version Power Supply Same design as the original Q Tron but with 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 Q Tron Plus's preamp and filter section without changing the envelope drive. This is particularly important with most distortion devices, as most all do not have much