I've got a 2004 Crate BT50 incoming.
We'll see how I like it, soon enough.
It has to be better than the Vox headphone amp I'm currently using.
So, I'll take my number now.
It arrived today. It is LOUD.
The ground terminal is broken off of the AC power plug.
In the seller's pics, it was not broken off. It was a little bent, but they can usually be carefully straightened, IME.
It also hisses, even with all knobs at zero.
Will a missing AC ground cause this? I could see where it would.
The pots are scratchy. Cleaning them should fix that.
For $42.00, do I even have a legitimate gripe?
If I keep it, I'm not going to use it again until I repair/replace the cord.
I don't know if running it without a working ground connection will hurt it, but I don't think it's worth finding out.
I repaired a Crate BT50 today. (It's a useful coincidence seeing this thread pop up, I didn't look for it, had no idea it existed...)
The scratchy pots are likely due to stiffening of the grease in the bushing overwhelming the spring that keeps the pot wiper securely contacting the track. Unfortunately they fail HIGH if the pot wiper goes open circuit, i.e. loud even with low settings. If the amp hisses with no input, it likely means the main output pot, on the right hand end, has done this.
Scratchy pots can be fixed, but if you do it, take care on opening, the tuner module is fragile, and attached by three wires to a small plug. ALWAYS unplug from mains because it's awkward to handle when removing the amp, it takes a while to get a secure grip while moving it at all once you loosen the four bolts on the top of the amp..
A couple of drips of pure isopropanol, dripped onto the top of each pot, then rotating the pots until there is an easing of movement before moving to the next, is probably enough to fix this. Do all ten, and NOT while there is any power applied. How long it will stay fixed I don't know, but probably a long time if used in clean air.
Using a properly grounded power cable is important! It's an IEC inlet in the back of the amp so it's standard, you probably have a spare already. Most people have more than they need unless they chuck them away.
The amp IS loud, but I don't like it, the design has what I consider to be a major flaw: the four tone controls only shape the clean 'channel', not the distortion channel. Even if you switch for clean, then enable distortion via the footswitch as described by the manual, you still can't use the EQ controls to adjust tone of overdriven sound, you can only blend! I tried to get a Burnel-like sound out of it as best I could, but it's really not going to happen. There may be things it can do well, but I don't like it. One thing it may do surprisingly well is act as a guitar amp. I had that bit of info from a guitarist, the guy I repaired it for.