I use it for 4 years with a head hd 147 line6 which models most of the amps.
You can play as well as a low volume high volume, the sound is still there with a big presence. It covers even a drummer who hits hard (used for metal and hardcore). Also the body is sturdy and fitted with wheels (very convenient to move the beast).
The price / quality ratio is simply amazing. 4 speakers 12 "custom Celestion in a body for less than € 400!