Mosiqaar, the Yamaha PSR2000 not only includes a Mic input jack (1/4"), but also a mic (trim) knob to control the signal level coming in. On the other hand, the 2000 does not include a 'separate' mic output. I can easily adjust the mic level (vocals) & the keyboard's internal sounds (auto accomp, main, left, layer parts) separately, via the 2000's internal mixer buttons. I would expect you should be able to do the same thing on the X1, so I'm rather surprised to hear you report that you aren't able to do it. - Scott