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Re: Marshall AVT50 Mods
reply to Adam's email:
Dear Adam, I will experiment with shipping overseas. I will not be sure of the cost until I have produced my first batch, shipping will be whatever the cost is (not in my control), plus perhaps a modest handling fee (yet to be determined). The circuit boards will come pre-soldered. Since the number of features will affect cost, the number of features will be based on what people are willing to spend. Initially, I will custom add features by order to help determine the final kit form/cost. These features will definitely be a part of the kit:
1. Clean channel mid range control
2. 25% pre amp tube gain boost footswitchable for channels 1 & 2 with silent switching & pedal LED (you will have to modify your pedal, and the pedal jack will have to be replaced on the back of the amp with a special one, along with a new secondary jack, I will provide the parts, the 4 conductor wire, and detailed instructions)
3. Mid frequency shift control channel 2 (6 positions, including original unmodified channel 2 amp tone)
4. A few higher wattage and voltage components
I have not tried adding the mid-shift to the clean channel yet, but I have the parts, I just haven't had the time. I haven't seen if the master volume is feasible yet. I don't have sound clips yet either, but the mid-shift on CH2 is dramatic and a key feature. As for tube boost the amp sounds stock, but when you add boost, the tube adds even order harmonics, and sounds like any breaking up tube amp, depending on gain setting (I scoped the results, and they clearly show I am bringing the tube into natural tube saturation/compression).
Whew! I hope this answers your questions! I am leaving on vacation now for about 20 days. I am posting this on the site. Cheers!
Peter
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