Shuguang vs. Tung-Sol in Monoprice 15 Watt Amp

I upgraded all the tubes in my MP15 amp to current production Tung-Sol reissue tubes--three 12AX7 preamp tubes and two EL84 power tubes. I used a looper pedal and identical microphone placement to control as many variables as possible. The Tung-Sols are a little louder, so I had to turn down the gain on my microphone preamp just a hair to avoid clipping my audio interface for the second clip. The levels came out closely matched. I&happy with the upgrade. I hear more midrange sweetness, slightly improved clarity and sensitivity, a bit more headroom, and a warmer breakup tone.