Solid, Small, Well constucted, Balanced to unbalanced is automatic, adds no color, High Isolation Tranformer in the TRS I/O, I keep three in each kit.

Feature:
There are no accessories. You don't even need a supply for this little passive device. I suggest though, that if you are going to be running into applications where you'be using this device in-line with RCA/phono terminals, that while you are shopping for this thing, arm yourself with an array of conversion adaptors. My current 'kit' consists of 4 each male TS to phono female RCA, straight-through, and another set of right-angled. I have my box sitting jack-side up as to keep my cables essentially running straight. Mail me and I'll send you a photo. See 'Ease-of-Use'

Quality:
Black, heavy steel box, heavily painted and well-labeled. Being a Product Engineering Technician myself, I have to take things apart and look at them. It looks very neat and tidy inside. Don't drop it on your toe, but this thing should hold up well on the road tour circuit! Ebtech could have skimped here but they didn't.

Value:
Online price wasn't but $3.88 more than what I got it for here in the Atlanta, georgia, USA area. For what I needed done and what I paid, it saved me a LOT of work. Easily worth what I paid and more. Another online seller was asking $80.

Desirability:
"Sex appeal"?? What? It's a magic black box. I don't need everything I buy to be 'sexy'. Find sex appeal elsewhere.

Sound:
I have a pro-audio, audiophile sound system that consists of 22 components. Last year I built a digital recording studio. Over he holidays I attempted to join the two systems and that's where the problems began. In short, and the details are much lengthier, this little box completely zapped the 60-cycle hum generated through the antenna this connection created. If it hadn't, I'd have been forced to dismantle a whole lot of gear, as well as operate the studio off of my spike protection and UPS power distribution system, as one of the 'partial' solutions was to put the whole system on one power supply. I ran my signals to the recording software/sequencer and compared them with/without the box; it made no noticeable impact. I might put test signals through an oscilloscope just to play but have not done so yet. I'm in a studio environment and it has absolutely done the trick. Their instructions highly suggest that one go through the process of taking apart a rack of gear to search for the culprit. In my case, I already knew I had two, separately-stable systems, the problem occurring ONLY when I joined them, so it seemed likely that if I inserted their box into that line, it would kill the hum. And it did.

Support:
I have not had to deal with Ebtech yet, but I will be shortly to offer my suggestion. It comes with a 2-year warranty if that tells you anything.

Overall:
It's a passive device, has essentially no moving parts other than the wiping action of the connectors when inserting plugs. From a design standpoint, I expect to see it working well after I am long in the ground.