The O.G.! Hard to find vintage big box Qtron envelope filter. This one is in excellent condition. Used a few times.

Classic analog. ​Two way drive. Hi and low range. Input, direct out, effects out, boost.​ Filter modes: low pass, band pass, high pass, mix allows bandwidth control from smooth to funky. Drive/gain-adjustable sensitivity of filter sweep in response to signal inputs.

Excellent old school bass effects pedal to add to your collection. Makes a fantastic gift. Get a jump on the Christmas season.

Power supply is NOT included. 24v DC needed. Pedal only.

Only able to ship on Saturdays and Mondays.



Reverb Buyer Protection

Reverb has your back if your item is lost, damaged, or doesn't match its description. Simply report any issues within 7 days and we'll help you get a full refund.Learn more about Reverb Buyer Protection.

Listeda month ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more
Brand
Model
  • Q-Tron Envelope Filter
Categories
Year
  • Late 90's
Made In
  • United States
Pedal Format
  • Standard

Product safety information may be available here.

B's Gear Outlet

Seattle, WA, United States
Joined Reverb:2025

Reverb Protection

Simple Returns, Secure Transactions, Human Support

Learn more

Secure Checkout

Promoted similar listings













Product reviews

Reverb Gives

Your purchases help youth music programs get the gear they need to make music.

Oops, looks like you forgot something. Please check the fields highlighted in red.