| Brand | Electro-Harmonix |
|---|---|
| MPN | Q-TRON+ |
| UPC | 683274010670 |
| Manufacturer | Electro-Harmonix |
| Type | Envelope Filter |
Check the listing for details. Electro-Harmonix Q-Tron Plus Envelope Filter with Dedicated Effects Loop. Condition: New. Listed at 192.30 USD. The classic Q-Tron gets even funkier. This is particularly important with most distortion devices, as most all do not have much of an amplitude envelope. You can invent all sorts of novel effects. The added Response Switch selects between a slow, smooth, vowel-like attack and the fast, snaked response of the original Q-Tron.