DDJ-S1 sound distortion issue that is resolved only by turning off the power

Hello,

I have been having some random USB dropouts or something while playing with my DDJ-S1. My gigs are usually 4.5 hours long and during that time I typically get 0-5 dropouts that last for less than a second. I have learned to live with this, though it still is very disappointing and ridiculous to see stuff like this happen with brand new hardware and software. I never got a single dropout when I used SL-3 weekly for a couple of years.

However, a much bigger problem has surfaced. It has happened thrice now. Last time was a couple of months ago and now it has happened twice in a week. The output sound becomes highly distorted, all the low frequencies are gone. Its a bit hard to describe, but it sounds a bit like the song was played from a speaker of a cellphone from the nineties. Very lo-fi and very distorted. The only way I have been able to resolve this issue is to quickly turn off the power on the controller and then turn it back on. This takes some seconds, and let me tell you those seconds feel long in a club full of people watching me as I want to hide under the table.

I have no idea what could cause this, and it has happened so few times I cannot find a way to make it happen again so that I could sample the sound or try different solutions when at home and not on a gig. The only thing I am quite certain of is, that every time it happened both decks were playing and one of the lines was open while the other one closed. I haven't been able to gather any more information because when this happens my highest priority is to get the sound output fixed, not to document the event that should not happen in the first place.

I have to say that before these issues are resolved I am currently very disappointed in my decision to buy this controller and start using it on gigs instead of SL-3.

Some additional info:

My computer is late 2007 MBP model

Mac OS X version 10.6.8

2.4GHz Core 2 Duo

4GB of DDR2 at 667MHz

I don't run any other software while performing. Airport is usually off. I cannot say if it has been off every time this has happened, but I know I haven't been connected to any wireless networks.

The only other thing I use simultaneously with ITCH is the Mac OS X stickies widget that I use to write down song requests.

Itch version 2.2.0

Controller firmware seems to be up to date

Buffer size 256

Hifi resampler on

Auto gain on

Screen update at 60fps