Ironically, some of my best recordings have come from the keyboard's onboard USB audio recorder, which seems to now be standard with most Yamaha arranger keyboards. The quality is excellent, and while there is no editing available, you can download a free copy of Audacity and edit everything - it's an incredible program.

I use a Sennheiser E855 mic and Marantz MPH2 headphones, both of which do an outstanding job. Now, I used to strictly use a headset mic when I was performing on stage, a Crown CM-311A, which is fantastic, but since my retirement, I sold all three of them, including one to Paul Blood. The headset mic give an arranger keyboard player the freedom to maintain great eye contact with his audiences, glance at the laptop when needed, and not worry where the mic is or whether it is in the right position.

While I have used the keyboard's onboard vocal harmony processor, I found the TC Helicon Harmony M provided better clarity and no delay when triggered. I fire it through the arranger's line/mic input so everything comes out of the keyboard's main, audio outputs. Works for me,

All the best,

Gary