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#REVERB TANK REPLACEMENT FOR MARSHALL AVT 50H FULL#
The layout and controls are kept simple, allowing you to exploreunhindered the full potential of the all-valve tone within.
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MA amplifiers are powered using the traditionalMarshallmainstays of ECC83 double triode valves in the preamp, and E元4 pentode valves inthe power amp. This effect is visible through the fretcloth where the trusty white script logo is mounted onto a solid piece oftransparent Perspex. The aesthetics of the MA have beenspecially designed to create a look that stands apart from most otheramplifiers from Marshall,while still retaining the essence of what people have become familiar with forover 45 years. Two orange LEDs illuminate the interior of the unit,highlighting the power valves. The MA range offers a valve amp from Marshall that is moreaccessible than ever before. So as well as making it the perfect choice for everyonesfirst all-valve amplifier, the MA range is the perfect choice for people whowant to take their sound on tour. What is more, like every Marshall, it is built tosurvive the road. By keeping theamplifier simple the MA is able to deliver the benefits of all-valve tone andcolour, while maintaining an attractive price tag. The MA has been carefully designed by ourResearch & Development team using the same basic principles as for all Marshall amps to create anamplifier that delivers something new and exciting for everyone. Theyare the perfect stepping stone between every guitarists first Marshall and oneof our iconic UKbuilt tone monsters. All models in theMA range are fully valve powered and deliver that unmistakeable Marshall tone. Marshall are pleased to announce that we havetaken things to the next level by removing the solid state pre-amp and power ampsections ever present in Valvestate amplifiers and are able to offer a true all-valveamplifier range within the same price bracket, the MA range. In 2001, AVT was born, incorporating Advanced Valvestate Technology inan effort to evolve this technology further bringing the true valve tone of iconicMarshall amplifiers even closer to the reach of those players who wanted moreamplifier for their limited budget. With the help of suitable expertiseand experience in sound manipulation the result was very impressive indeed. (There was also another unit you could get which took advantage of the huge difference in send and return levels to turn the reverb circuit into an on-board overdrive, using the reverb control as the volume - this one was called the 'Ice Cube', and plugged directly into the back of the amp with the RCA plugs actually mounted on the box.)īut having said all that, why bother? Part of the magic of Fender amps is their wonderful spring reverb, and they sound just as good with the FX unit in front of the amp too.In the nineties, Marshall developed their Valvestatetopologies, simulating all-valve tone by placing an actual valve in thepreamp stage of a solid state amplifier. There was in fact a commercial unit you could buy many years ago which did exactly this - it had two captive RCA leads going to the amp and a pair of jacks for the FX loop, and I think level-matching pots as well. If you do all this it will work perfectly. If you just connect a line-level effect unit to the return the level will likely now also be too high - so you will need another couple of resistors to drop it down to the level the amp expects. Next, a spring reverb tank is extremely inefficient so although it gets a very strong drive signal it doesn't put out very much at the return more like the level from a guitar pickup. This can be fixed by using a dummy load resistor and another two to both load the send and bring down the level. You can use the reverb send and return as an effects loop, but it isn't as simple as just connecting the FX unit there.įirstly the send is basically a small tube-driven power stage and both needs a load to prevent you blowing the tube or transformer (just like any normal amp output section - it's also expecting to see about 8 ohms), and secondly is very high level and will overdrive most or all FX units.