Used Blackstar S1 45 Tube Combo Amp in excellent condition delivers 45 watts of pure tube tone through two EL34 power tubes and a Celestion speaker. Features include ISF control for British and American voicing, two footswitchable channels with independent EQ, and a built-in effects loop. Ideal for stage or studio, this powerhouse combo includes the original footswitch and offers dynamic, responsive performance with Blackstars signature versatility.