Wednesday, 25 November 2009

Variable DI-Out

One feature which I really wanted to add to my amp to increase the versatility is a DI Output.

I was recently looking at the circuit diagram to a Mesa Boogie Studio .22 Caliber Plus, in order to replace the power supply capacitors for a friend and noticed that it had a really simple DI output with variable level. So using this as a basis, I came up modified my amp as follows:


Changes highlighted in red.

I've seen some other mods out there to add DI outputs to similar amps that suggest taking the output from between the pre-amp stage and power amp stage, but the advantage of this mod is that since it's right at the end of the signal chain, it should sound exactly the same as the signal that reaches your cab... and I'm pleased to say that it works and sounds great :)

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