Hand-built 300-Watt bass amplifier head driven by 6 x 6550 valves * Vintage design from the "60s featuring 3 x 12AX7 and 2 x 12AU7 valves for harmonically rich and vibrant valve sound * Revolutionary Infinium Valve Life Multiplier technology: - Extends the life of your amplifier"s expensive power valves up to 20 times * Voicing selector provides you with 5 classic sound variations to suit your playing style * Dedicated Bass, Mid and Treble controls and High/Low switches for ultimate sound shaping