Let's check out the AMT Stonehead SH-100-4R. The AMT Stonehead has 4 independent channels and can operate at 100, 30, and 3 watts. It includes extensive routing and can operate as a preamp, or power amp independently with no need to have a cabinet attached. A multi-channel high gain preamp, power amp, and full amp head in a single rack space package!
Check out the AMT Stonhead SH-100-4R available at: