Sound — 5
This is a very noisy amp when idling on the distortion channel, particularly when the treble is on a high setting, lots of hissing, etc. Once you start playing it seems to drown out any hissing and crackling though. The sound quality on distortion is okay for this size amp but not great, you can get some pinch harmonics out of it when the gain is on max. It sounds kinda watered down on the higher notes. The speaker seems to be of okay quality but again it's nothing that stands out. Clean channel sounds thin, pops a little and lacks power and sustainance. It's quite loud for a 15 watt.
Overall Impression — 6
This amp is great for a beginner who just wants to learn the basics and isn't concerned with good sound or quality. You can get them second hand on ebay for $10-$20. Don't pay more than that.
Reliability & Durability — 8
Mine is a number of years old, the vinyl coating is wearing thin and decaying in some places. The controls look cheap and the volume knob actually broke off so I have to adjust it using the bolt that's supposed to hold the knob on (which is also plastic). It still works, it just sucks. The box appears to made of particle board or mdf, and it's pretty heavy. It seems to be quite water resistant. There are metal corner protectors on the bottom and back, but not on the front. Mine's been dropped a few times and looks pretty dinged up but it still performs like it should. The textile cover over the speaker is pretty hardy and will resist normal wear and tear including bumps, car rides, kicks, etc with no problem. The fact that I've owned this amp (granted with very little use for most of the time) for about 10 years with no significant performance issues should say something about its reliability. There's not a whole lot that can go wrong with it.
Features — 5
This review is for the Champ 15G bought used in approx '96-'97. I mostly play metal, blues and rock. To activate the distortion you need to crank both gain channels very high, which is inconvenient and a simple channel selector button would improve things immensely. Features are very minimal, limited to a 3 band equalizer, volume and 2 gain control knobs. The volume increases dramatically as you turn the knob past 1 or 2 and it takes a lot of fiddling to get it to an appropriate level. The features are adequate for a beginner. The on/off Switch is conveniently located, works well and has an LED. The headphone jack is a handy feature and the sound is good though it.