Yeah that sounds like a great rig. Leave your tube amp at a neutral tone and let some of your different drive pedals color the tone based on what kind genre or mood your in.Yeah even with that little treble addition mod he did it was still pretty mushy for me as well. I loved it at home by itself through my Ampeg B50R but with at bumpin levels it just fell apart. It’s just the nature of that circuit I think. I could see how it can fit in many other genres though. Great OD.
You know the Ictineo may be a great thing for you too. It’s on the pricier side but for what it is, it’s a steal. This pedal could also add clarity and punch to your existing setup although I don’t think it’ll give you “drive” per say, it would def drive your tubes hard. In fact, it could be better that the GK Rails for this possibly. See, this is what I ended up with after I got an all tube head:
DOD fx10 > Rusty Box > Darkglass B7K Ultra > Ictineo. Plus I have my onboard preamp with a 3 band EQ. That is my whole tone shaping/EQ/preamp section. I run my onboard almost flat with the bass bumped a tad and the treble a little higher depending on string condition.
Now I know that is a lot. Most likely too much for some. But it’s what worked for me and I love my tone these days. But all these layers come through those tube singing a glorious song of bass nirvanaadd all my drives and dirt, I’m very happy, let’s just leave it at that. But It took me a while to settle on combos and certain dirt pedals. Hell I’m still open to trying new things of course. But my tube head changed a lot of things for me. In a great way. All by itself the Electric has a wonderful, full, tube sound. But the EQ on it is minimal which leaves a lot of frequency to be covered. So it’s perfect for a bassist with a pedal fetish haha So that’s why I can relate to your situation so much because I always need that treble bite, that high end sheen. And without some key components I would be missing that. But as far as dirt goes, the ones I named worked really well for me. Albeit my setup is most likely a little more in depth than yours, I feel those can help you get to where you want to be in the end.
Btw, my head is actually a solid state head. It's made in the 70s, but it's still solid state. It can get dirty, and it honestly sounds pretty tube like when it breaks up. But like I said, I run it clean. So the ictineo could drive my amp if I set it right, but I'd rather get a rusty box or perhaps OCD clone. The GK rails pedal can definitely drive my amp too. It can stay clean or get very dirty. Probably as dirty and punchy as your darkglass pedal. I've owned one way back in the day and really regret selling it. I sold it to pay for the acoustic 370 power amp pedal which was a mistake. Couldn't afford that