The big stage amp of choice in the '60s is brought back in the Ampeg SVT-CL Classic Bass Head with 300W (to either 2 or 4 ohms). Tube array includes 2 - 12AX7s in the preamp, 2 - 12AU7s and a 12AX7 for drivers, and 6 - 6550s for power. Controls include 3 bands of tone, 5-way mid selector, plus ultralow and high boosts. Normal and padded inputs, tube-protection circuitry, auto-fault mode, fan cooling, slave output jack, 4/2 ohm selector, user biasing controls, and 3-position AC polarity switch.