Don Carr presents the FreqOut feedback-creation pedal. Use it to coax natural-sounding feedback from your guitar amplifier at any volume, with or without distortion. You even have control over the harmonics that are highlighted, leading to amazingly musical results. The sound is full and huge, just like a howling guitar amplifier. The footswitch can be set for momentary or latching operation, and you can choose whether your dry signal is mixed with the effect.
Buy the DigiTech FreqOut pedal here: https://www.sweetwater.com/store/detail/FreqOut