I thought these were just about perfect for my use, until one broke inside my mixer. I've been happy with Monoprice's cables, but will be looking for an alternate solution to replace this adapter, along with my pliers to extract the stuck piece!
I got two of these to connect my Monoprice 5" Studio Monitors (product 605500) to my Monoprice 12" subwoofer and PC. The monitors take a 1/4" TS or XLR balanced or unbalanced input but do not have an RCA connection. These simple adapters remedy that issue perfectly. My only complaint is that the adapter is a bit long, causing the cable to stick out the back a bit more than if I just use a straight 1/4" TS cable. No sound issues whatsoever, the sound is crisp and clear with no noise.
I've had this for a few weeks now as an adapter to play requests from ipods though my mixer. Has not given me any trouble at all. I tested both to make sure they wouldn't break in the mixer (huge trouble) by throwing them on the ground and they survived. Would buy here again if I need more.
PROS: Great quality, heavy feel, so far no trouble