Part of Blackstar's HT-1 Series, the innovative HT-1 guitar combo amp offers unbelievable tube sound in a compact format. Using the dual-triode ECC82 wired in a push-pull circuit, it produces the crunch and break-up characteristics of a traditional 100-watt amp at a much lower volume. Switch from normal to overdrive at the touch of a button. The patent-applied-for ISF (Infinite Shape Feature) circuit gives you infinite variation, taking you from USA to UK tone, and anywhere in between. Add in the 8" speaker, emulated speaker/headphone output, MP3/line Input, plus an 8-ohm speaker output and you have everything you need for recording or practicing.