Freeze Sound Retainer : Good idea.

It is an great tool for modal improvisation. I use it to create drones and atmospheres in my solo work. It is awesome to don't have to rely on loose strings.

BUT!

It could have been better! It looses some bottom (I'm a bass player it might not be a problem for guitarists etc.) and the switch makes a loud click when i press it down, not good for intimate solo performances. The switch is also quite small for on the fly use, a piano sustain design would have been great.

And now after a while, it make a strange noise when i ignite the pedal.

To sum it up.

It is an great(!) effect but it is poorly constructed.

Electro Harmonix could have done this so much better and made it an iconic effect instead of a gimmick.

/J