What gear do you have ?
VHT/Fryette shit is amazing!! Their KT88 amps(Pitbull UL, Sig X, Deliverance) have such a unique voicing and gain structure. I love the dry high headroom sound of KT88 and 6550 power tubes. Part of why I went with the Krankenstein Plus, older Kranks were pretty unique but hard to dial in and had a weird buzzy midrange that was hard to deal with. The updated "Plus" versions of the Revolution and Krankenstein with bigger transformers and 6550 tubes totally smoothed out the overalls jagged edges and made them a lot fuller/rounder/warmer and easier to dial in.
But yeah you are right. Not all lower gain amps boosted with an OD get you modern sounding tones of even just better tones. I find it usually works best with amps that are mid gain, aka JCM800 2203/2204. To me it's not even about adding gain, it's more of the added compression/sensitivity to make it "feel" like it's got more gain than it does. To me a mid gain amp with some added OD pedal compression makes for some of the most organic, versatile "high gain" tones that work for more than just metal. My Peavey Butcher from the 80's is a perfect example of this approach. I tend to prefer the attack of my Krank more these days but even with that amp, I leave the gain only 1/4 of the way up and clean boost it with an OD pedal. I can get the same round about tone with the gain at 5-6 but I just prefer those boosted lowered gain tones.
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