Some users complained about an audible pop when the switch is

Can get full on copies of the signal for some awesome ambient progressions and can also set it so subtle that it almost works like a reverb, really making my clean progressions or lead tones pop out

Product may be defective, loud popping noise when activating this pedal

Great sound, quiet, long delay time capability, micro-size, crazy-low price, big delay-time knobCons: Two very tiny echo and feedback knobs with near-invisible notches, stomp switch makes a (to me) unacceptable "pop" sound when engaged

Everything about this pedal is excellent except for the loud pop when you click it on.

It does, however make a somewhat loud pop through the amp when I step on the switch (electrical noise not the physical click of the switch)

The effect sounds great other than the invasive pop when activating.