The AVT150H is the head version of the AVT150 and boasts all the same features and facilities as its combo brother. This includes the excellent 'Scoop' facility. On OD1 this radically scoops the mid frequencies whilst tightening the bass for aggressive driving rhythm sounds. On OD2 the middle is again dipped, but a cut in the upper frequencies smoothes out the sound for a more bass heavy ('Nu') Metal selection. ^^^What is AVT? From the compact AVT20, right up to the thunderous roar of the feature packed, four channel AVT150H, each model in the 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. We 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. ^^The same, unrivalled design expertise that went into the pre-amp was also channelled into the design of the AVT power stage. Using frequency dependent power amp damping and our 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 have made our 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.^^The AVT100, AVT150, AVT150H and AVT275 all have on-board DFX (Digital Effects). Here the greatest care was taken to ensure that the highest level of signal integrity was maintained at all times. We achieved this by successfully integrating DFX into the tonal topology of AVT without adding any of the nasty-sounding, artificial Ôgrain' 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 two DFX sections - one for the Clean and Acoustic Simulator channels, and the other for the two Overdrive channels.^^Knowing the importance of the relationship between power amplifiers and loudspeakers, we 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.
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