Another Crate first in guitar amplification. This is a 150-watt RMS stereo guitar amp in an amazingly compact package. If you have a modeling guitar preamp/processor, you can use the PowerBlock to amplify your programmed tones for a gig. The PowerBlock runs in stereo or mono, so you can use it to run to a single 8-ohm enclosure, or 2 x 4-ohm enclosures, in stereo!