Keeley Neutrino

The Frequency Analyzer XO guitar effects pedal from Electro-Harmonix is, at its most basic, a ring modulator, but the sounds it can produce go way beyond what your garden variety ring modulators are capable of. This updated stompbox adds moving harmonies to the notes you play while integrated high order filters enhance the variety of the harmonies and cut down on cross-distortions. Dedicated Blend, Fine, and Shift controls make it easy to dial in the perfect techno-tinged sound for your purposes.

Elevate your sound to the funkiest of heights. The Q-Tron envelope filter guitar effects pedal from Electro-Harmonix uses an innovative internal envelope follower to analyze your unique playing style and sweep the center of the envelope filter. You get auto-wahs that change dynamically depending on your pick attack. Plus, you can choose whether the sweeps go up or down. It’s not just for guitarists, either; increased frequency response and improved signal-to-noise ratio make it very useful with any instrument.