hi Donny:

Both the PSR2000/2100 & Tyros include a single 1/4" Mono jack only. No stereo inputs. There is a toggle switch which sets the jack input level to mic or line level.

This may prove disappointing for some, but I myself only need to utilize the line input jack to plug my MP3/Mini Disc player into for 'background music' during my breaks, and actually prefer 'mono' sound as this offers the listeners a more impressive constrast when I return, performing 'live' again, and in 'stereo'.

On the subject of the background music played during breaks: As both a vocalist & keyboardist, I generally like to keep my break time background music limited to instrumental style tunes, as well as not including music performed by me.

I'm really curious to hear what type of songs (if any) are played during breaks by other gigging performers here.

Scott