The same, unrivalled design expertise that went into the pre-amp was also channeled into the design of the AVT power stage. Whenever you select an AVT Overdrive channel, the ECC83 is saturated to its limit, providing dynamics and feel worthy of a place in the Marshall hall of fame. The resulting clean sounds ring with the bell-like harmonics that only a valve pre-amp can deliver and the break-up is never harsh or unnatural sounding. They have gone to great lengths to ensure that this precious device delivers maximum sonic benefit at all settings and volume levels. Instead it is playing the central role in the gain, distortion, and tone-generating circuitry. Unlike certain other hybrid amps out there, this valve isnt merely acting as a pilot light. Combined with numerous user-friendly features, they believe weve created the best value-for-money range of Marshall amplifiers ever!ДЇrom the compact AVT20, right up to the thunderous roar of the feature packed, 4-channel AVT150H, each model in their brand new AVT line boasts a pre-amp stage that is driven by an ECC83 Dual Triode valve. This extremely responsive and warm sounding circuitry was then coupled with the specially voiced, ECC83 (a.k.a 12AX7) valve-driven pre-amp section, to provide 100% valve/analog warmth from input to output. Marshalls long history and experience in the field of valve amplification was utilized in the development of the new AVT power amp. AVT has evolved from their original, critically acclaimed Marshall Valvestate technology, but is vastly improved so it emulates the tone, feel, and response of their world-renowned, all-valve amplifiers with unerring accuracywithout using valves in the power stage. In Marshalls quest to give players the ultimate tone at a realistic price, they have combined the latest innovations in valve, solid state, and digital technologies to achieve optimum sonic performance. You will feel all the extra depth and sheer tonal weight of which only a head with a 4x12 is capable! For even greater power and projection, the AVT50H will also drive the industry standard 1960 4x12 in. Switching to Overdrive takes you from those classic rock tones right through to the most contemporary slamming sounds. Powering the purpose-built AVT412A (angled) and/or AVT412B (straight) 4x12 in., 200-watt, Celestion loaded cabinets, the AVT50H will deliver crisp clean sounds and roaring crunch in abundance.

The AVT50H is the head version of the AVT50 combo and is armed with the exact same features.

Marshall avt 50h valvestate 2000