Nice! been doing it this way forever but how about we take it up a notch and ditch that metalzone? Just cause it says metal doesn't mean it will work for it!

That was one of my first pedals and was great through an old stereo system into a pair of BOSE speakers.The even more valuable secret is just to boost over your boost. That SD-1 is great for tight gain. Just throw a good 6 band EQ (BOSS or anything) to further boost and shape it. Now you've just gotten into flavour country with your three channel amp.I applaud your use of accessible and affordable gear though! No 5000$ pedalboard with routing that makes it look like a server lab rather than a pedalboard.