So I've had this for an hour running with an SD-1 and my 900 . First it doesn't change your tone at all zero unlike a certain Boss pedal. The gate is lightning fast the decay is natural you don't know the pedal is on it's that good no string noise either. It does exactly what you want with no strange artifacts or tone change and it's true bypass .. Much better than an NS-2 and I like it better than the ISP pedal the one without the loop feature. I highly recommend it. To recap no tone loss I mean zero and the gate is like a light switch and the sustain is like the pedals not there . Excellent Gate. That's just running it straight pedal to pedal without using it's loop ability. I will try that some day probably when I have more pedals in the chain . I took a chance on this unit there's a lot of newer gate's out but it's a diamond in the ruff. The guitar players that have used it swear by them and I agree you won't do better without going to a rack unit.