From tlrouse@gmail.com Sun Jan 27 17:09:27 2013
Subject:high pitched tone coming from M-audio Fast Track

I've posted about my set up before but I'll review.

I'm using M-Audio Fast Track as an external sound card for my midi-vst setup. M-audio, 2 keyboards, and a Korg NanoKontroler are connected to my laptop. I'm using Cantabile Performer as my DAW. I've set M-Audio as my audio engine in Cantabile. Out of the back of the M-Audio I'm using the L/R RCA jacks to run into a Y cable, which plugs into a 1/4" cable which in turn runs directly into a channel of my Behringer K3000fx.

I'm getting a good signal to the amp. The problem is that when using M-Audio as my sound card, I'm getting a continuous high-pitched tone coming through the amp. It's loud enough to be annoying.

Interestingly, if I keep everything the same, but take M-Audio out of the loop and use my internal sound card along with Asio4All as my audio driver, THE TONE DISAPPEARS.

If I use M-Audio, but disconnect the audio out, plug into the headphone jack and listen to sounds via head phones, the sound is fine- no annoying tone.

Any idea what could be going on here?