Got the unit, and it is neat, but only moderately beneficial. No sound, but mostly beneficial for practicing rapid chord changes and fingerings. I travel a lot, so this can be thrown in an over night bag and is "better than nothing".

Didn't expect much...didn't get much for about $40.00 with shipping.

I will use it on trips longer than 2 days; particularly on the 11 hour flights I take overseas three-four times a year.


R.