Date Region Description Price Seller
EUEnvelope Filter ![Electro-Harmonix Qtron](https://rvb-...$116.86
EUVERY GOOD CONDITIONSORIGINAL BOX NOT INCLUDEDFULLY WORK...$159.78
EUIn great condition. ![Electro-Harmonix Q Tron Plus](ht...$157.64
Japan[Product Description]The electro-harmonix Q Tron is an ...$227.06
Japan[Product Description]The Electro-Harmonix Q-Tron Plus i...$190.61
JapanWelcome to Qsic's Reverb Shop!1. The description texts ...$116.08
UK- perfect working order with power supply. - a differen...$297.56
USAEHX Q-Tron Plus Envelope Filter with Effects Loop The ...$192.30
USAThis is a used Electro Harmonix Micro Q-Tron cosmetical...$89.00
USAThis is a used Electro Harmonix Q-Tron cosmetically in ...$159.00