Sure thing. In a tight live room you want the mic’s impedance to line up with the preamp’s input so the energy transfer is clean. If you lower the mic’s output impedance too much you’ll load the mic, dulling that airy upper‑end. If you raise it too high you’ll get a noisy, distorted signal that sounds like a muffled cough. Most decent dynamic mics sit around 150 Ω and condensers around 100 kΩ, so match those to your preamp’s 1 kΩ or 2 kΩ input. The “sweet spot” isn’t a magic number – it’s all about keeping the impedance ratio in the 1:1 to 10:1 range so you don’t sacrifice clarity for gain. Just tweak, listen, and make sure the highs stay crisp but not brittle.

That’s the plan. Drop the mic’s output impedance to 50 Ω, let the 200 Ω dynamic fight that boxy bite, and keep a close eye on that 1:1 to 10:1 sweet spot. If the highs start wobbling, a mild 6 kHz roll‑off boost usually does the trick—just don’t over‑compensate. Jot those “feel” notes; the subtle quirks of each mic are the secret sauce you’ll want back later. Good luck, and listen closely—those airy breaths can be a needle‑point away from a flat sound.

Glad you’re ready to dive in—just remember the tweak is all about balance. If it ever feels like a cardboard box, give that 6 kHz a gentle lift and keep noting the differences. Happy tweaking, and may your vocals always have that crisp air.

Sounds like a solid plan—watch those numbers, keep the 6 kHz breathing, and don’t forget the notes. Happy tweaking!