Have them properly eq and set their head that way you aren't having to yank on the highs in post recording eq. The best way to mic the triple, which is what i have, is just keep everything flat on the mixer and have the amp itself eq'ed to sound right. Sounds more natural. Also, keep the volume as high as you can get without noise/feedback. The triple is a higher wattage tube than say the dual, and to get the true tone, it's gotta be loud. Just my 2 cents.