DTI : It's good

I used it for a hum I have in my speakers. I was using technics 1210s, a sub, a mixer and speakers. I changed all leads to xlr first, but the leads from the sub to the speakers were rca's that I just put xlr adapters on. I got the dti but it didn't eliminate the hum. So I've replaced the leads from sub to speakers with direct xlr leads and the hum is gone. I had to bypass the sub as it was those leads I've used. I will purchase now xlr leads and go through the sub again to see if the noise returns. Ultimately the dti didn't solve my problem initially, leads did but I can tell my sound is clearer and more crisp so it does improve sound. I will update this review once I change the leads from the sub and see if that helps.