as you can tell, there is one control... speed. and its great. the big knob is great for turning with your foot in the middle of a live song, just be careful not to unintentionally hit it. great buy, incredible sound

I use this on my bass pedalboard. It produces a great phaser sound, but too much for bass. The big problem is, there is no effect level, or clean/effect level control. It's either 100% phaser sounds or nothing. Also, my footswitch nut was loose. Some Lok-tite and a wrench fixed that.

I play alot of Pink Floyd and have designed my rig around what Gilmour has used. When it came to getting the Wish You Were Here album tones the Phase 90 was a logical choice and from experience with MXR products the quality has always been wonderful. This pedal, not so much. I tried it out before any purchase decision, plugging a Strat into it and with the pedal disengaged there was bleed through. No true bypass! Aside from that, the pedal is incredibly agressive. There's no silky smooth sound to it as heard on the recordings of the 70's. If you're looking to pick up a phaser, look at a Small Stone by EHX. After this experience, an EHX Small Stone will grace my pedal board. The Small Stone is far more organic and smooth, slight volume drop aside.

Easily the most powerful stompbox in my rig. There's a huge sound produced by this little thing, and it's fantastic. There's just the speed knob, so as far as features go, there's not so much, but it's a sensitive control. It also seems to add a bit of extra volume to my signal when I'm playing with a lot of gain, but I'm fine with that.

This pedal is a one trick pony, but does the trick. I love this pedal because of the phase and space it creates. Only downside is the price but well worth it.