Best feature is good tone when played at low volumn, perfect for practicing in bedroom or small appartment...clean channel is very good, crisp and sharp, with little hiss, even thru Tele single coil pickups...you can also get great distortion from overdrive channel when combined with the various built-in effects...

Built in effects include 2 echo delays, flange, 2 chorus's and two reverbs...the effects are no substitute for high quality effect pedals, but are fun to play with, and can add alot of different tones

...also test-drove alot of other small practice amps, including Fender Frontman's, Marshall's 15 watter, and the Crate GFX-15 just had more versitilty and wider range of tones for about $10-$30 more....lr**

Feature:
Basically, the features are great for my setup. It allows me to control the tone before the signal is boosted. Lets just say I wasn't getting enough output to the head and receiver before, now I do. The only draw back is if you have and older model like I do, the components get wore and have to be replace, like I had to do. I leard a lot about Crate's GX amp inside and out.

Quality:
This is probably the only thing I can say. The quality department is lacking because of failure of parts, but no worries, they were fixed. I couldn't depend on it. Wish I had a backup. I don't think I would haul off and tour with this thing, NO. But after all was ordered and put back in, just a few minor maintance issuse, mechanical parts.

Desirability:
cute. it getting there, I understand that the newer models are made a little different but this little amp has pulled me up and put me back on my feet(it's great when parts aren't blowing out). It practical, but very helpful.

Sound:
Accurate, but tweeks at the lows. Sound quality is great for a studio amp(when miked properply). Slow response nothing a better pickups wouldn't cure. Yes in it's own little world. Yeah, because I use it as part of "tri-amping" technique. Yes. Actually it's pretty evenly based. Not to great to be honest, it needs alot of help. Alot better. Don't know I'd be affaid of using it live. Good very easy to operate. Jackson Rhodes, Jackson KE3> DOD Tec4x> GX15> speaker monitors/Kenwood Reciever(250 Watts max output> 2 MTX triaxles{100 watts per})> Randell RBA 500(500 watts), bass head> 2 Cerwin Vega MX 400(400 Watts power handling). Triamped.

Support:
Nope, first time. Yeah and helpful too. Technically yes. N/A. YES! :-{ Did all the work myself. Turned out good so far...

Overall:
About a year. supplement. Wearing it out, looking for better hardwear at the same price. Good. Sometimes. Probably buy something eles, Marshall. How old it was. Very helpful when low on cash. HARDWARE!