I give a lot of live (but recorded) seminars over zoom and need high voice quality. At home I use a Rode NT5 plugged into a focusrite 2i2 in a room with some sound treatment, and am pleased with the results. However, I also sometimes need to have zoom meetings while traveling, when I can't bring all of this gear with me and am likely in a place with worse acoustics. Right now I use a cheap USB lav mic which doesn't sound great, and I would like to upgrade to a higher quality pro lav mic, possibly the Shure twinplex TL47, which sounds good to me in tests on youtube.
My laptop has a TRRS port, but I can't use this for the microphone, because if I plug in a cable it mutes my speakers, preventing me from hearing if someone in my audience has a question. Hence, I'm hoping to get a small USB adapter and use this to plug in the lav mic, so it shows up as a separate USB sound device. My questions:
Is it better to get a microphone with a 3.5mm TRS or 3.5mm TRRS connector/adapter? Presumably TRRS is an unbalanced signal, but I don't know if TRS connectors are typically for a stereo signal, a balanced mono signal, or a mono signal with a separate connector for power. Is it easy to convert in both directions, or is one of them more general? (Though I'd typically plug into my laptop, in certain situations I might want to plug the mic into my phone [TRRS] or mirrorless camera [TRS], so I'd like to be able to adapt to whichever connector I don't get.)
Do most USB audio adapters supply bias voltage? I definitely can't lug a proper mic pre-amp around, so am hoping to use a small USB-to-TRRS or USB-to-two-TRS connector cable. Unfortunately, none of the audio adapters I see mention anything about bias voltage. I don't know if this is because all conforming 3.5mm TRRS audio sockets supply bias voltage to the microphone and hence it goes without saying, or because no adapters do this and hence none would work with a condenser mic.
Any suggestions on lavalier mics to consider if I like the sound of the Rode NT5? (In particular, I like that the NT5 makes my voice sound less "boomy" and tiring than my current USB lavalier mic, which I was using previously all the time.)