The AVT50H is the head version of the AVT50 combo and is armed with the exact same features. 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. Switching to Overdrive takes you from those classic rock tones right through to the most contemporary slamming sounds. 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. cabinets.
The AVT412A is an angled-front, 4x12 in., 200-watt, Celestion loaded cabinet. Its muscular construction and maximum bang-for-your-buck prices make it ideal for use with Marshall's AVT heads (AVT50H and AVT150H), as well as many other amps! Combine it with the AVT412B to create the "Marshall Stack."
What is AVT
In Marshall's 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. 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 accuracyáwithout using valves in the power stage.
Marshall's long history and experience in the field of valve amplification was utilized in the development of the new AVT power amp. 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. Combined with numerous user-friendly features, they believe we've created the best value-for-money range of Marshall amplifiers ever!
Valve Drive Pre-Amp
From 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. Unlike certain other hybrid amps out there, this valve isn't merely acting as a pilot light. Instead it is playing the central role in the gain, distortion, and tone-generating circuitry. They have gone to great lengths to ensure that this precious device delivers maximum sonic benefit at all settings and volume levels. 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. 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.
Power Amp Delivery
The same, unrivalled design expertise that went into the pre-amp was also channeled into the design of the AVT power stage. Using frequency dependent power amp damping and their proprietary, dynamic clip level technology (which emulates the HT supply of a valve power amp), each AVT power stage creates the warm, musical feel and 3-dimensional sounds that made Marshall's all-valve power amps world-renowned. Also, all AVT products will deliver the goods in the often hostile and unpredictable environment of the live performance stage - which is why the AVT power amps of 50 watts and up are fan cooled for optimum reliability.
DFX Onboard
The AVT100, AVT150, AVT150H, and AVT275 all have onboard DFX (Digital Effects). Here the greatest care was taken to ensure that the highest level of signal integrity was maintained at all times. They achieved this by successfully integrating DFX into the tonal topology of AVT without adding any of the nasty-sounding, artificial "grain" often associated with DFX. To make the 16 custom-voiced DFX as controllable and user-friendly as possible the relevant models are all supplied with an LED equipped foot controller which allows you to switch the amp's DFX on and off, as well as change channels.
The flexibility of the AVT150, AVT150H, and AVT275 is further enhanced by having 2 DFX sections, 1 for the Clean and Acoustic Simulator channels, and the other for the 2 Overdrive channels.
Extended Response Loudspeakers
Knowing the importance of the relationship between power amplifiers and loudspeakers, Marshall have worked extremely closely with Celestion to develop a range of speakers that will re-define the cutting edge in rock guitar reproduction. These speakers allow the compact, closed-back cabinets used in the Valvestate 2000 AVT range to maintain the bottom end delivery normally associated only with a full 4x12 extension cabinet set-up.
Technical Info
AVT50H
Output (RMS): 50 watts
Impedance: 4 ohms
Speaker: None
#Channels: 2
Acoustic Simulator: No
Digital FX Section: No
FX Select Switch: No
Accutronics Reverb: Yes
FX Loop: Series
FX Level Switch: No
FX Mix Controls: No
Scoop Switch: No
Bright Switch: No
Emulated Line Out: Yes
Headphone Jack: Yes
Master Volume: Yes
Presence Control: No
Speaker Outputs: 2 ext.
CD Input: Yes
Footswitch: PEDL-10001 included
Dimensions: 674 x 250 x 254 mm
Weight: 12.4 kg
AVT412A
Dimensions (W x H x D): 26.5 x 28.0 x 14 in.
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