Hi guys! I'm occasionally lurking here. Not much happening in Yamaha arranger news unless you got deep pockets.

I used to be a very proficient and passionate guitarist, and after many years, I'm getting into it again.

I'm still doing over 400 arranger gigs a year with the senior circuit, and I want to bring my acoustic guitar along occasionally just to change things up.

The PSR-S970 has a mic input. Can I do this?

1) Plug a Hosa Y cable (One 1/4" M to two 1/4" F) into my PSR-S970
2) Plug my mic into one of the Hosa inputs
3) Plug my preamped acoustic with onboard volume control into the other Hosa input
4) Sing and play solo acoustic and also accompany MIDIs using the keyboard to control mic volume and the guitar to control guitar volume

Would the Hosa Y cable worsen the quality of the audio input?

Thanks!