Fam

Solved... or at least good enough for now Just wanted to update this a bit. Although I'm still unsure if it was because of the interface's weak line inputs (probably this) or because of the Casio px 560s outputs the solution that worked for me was adding a small mixing board (Yamaha MG06x) before the interface. I bet an active DI box Or some other preamp like thing might have worked too. But this gives me plenty of headroom. Thanks for the help !

Sorry for the confusion, I edited the other post. I guess as a work around I could get a small 2 ch pre amp for Mics and such and keep it connected to the motu inputs 3-4. then keep the keyboard pugged into inputs 1-2. I'm not sure what could be going on with the inputs 3-4 all the docs I see make me believe its probably a TRS (or whatever colloquialism we want to use for a 3-conductor 1/4" jack) I hope this picture posts.

Also. I either play the px560 and record directly into the DAW. Or I will send midi from the DAW into the px560 (I think that uses Port C) and back to the DAW to get those juicy casio tones. Edit: sorry for the confusion, this chain looks like this DAW > Motu M4>midi > PX 560> lineout TS cables> Ebtech LLS> TRS cables> Motu M4 input 1-2> DAW this gives enough volume from the inputs and I can still access all the px560s sounds, but it eats up inputs 1&2.

Thanks for the response guys. So everything is maxed out on the px560, main volume knob, equilizer settings, mixer. on the mix screen the volume is 127 for all tracks/parts on all ports (A,B, and C). I didnt know it functioned like a signal chain, thats good to know! After maxing all the mixer volumes the DAW shows input max out at around -13dB. As for the interface. The back connections are TRS, not sure why the spec sheet doesn't reflect that. but the user manual describes them as capable of handling "Balanced or single ended" 3-4 as well as the some of the testers on audioscience https://www.audiosciencereview.com/forum/index.php?threads/motu-m4-loopback-measurements.10890/ inputs 1 & 2 are multijacks with preamps and adjustable gain. It seems like the impedance is automatically adjusted by the Motu itself. My DAW doesn't play a part in that. That part is kinda dope, although Idk if there are any drawbacks to having input jacks like that. Either way, I run 560s lineouts > TS cables > Motu (inputs 3-4). ~ -13dB max 560s lineouts > TS cables > Ebtech LLS** > TRS cables > Motu (inputs 3-4) ~ -13dB max 560s lineouts > TS cables > Motu (inputs 1-2) with gain knob totally down ~-7dBmax -- but i can still adjust the gain up to wherever I need it 560s lineouts > TS cables > Ebtech LLS** > TRS cables > Motu (inputs1-2) with gain knob down ~ 0dB and it actually clipped using some of the brass hex layer sounds. /removing all other instruments from input 1-2 didnt seem to change the performance of inputs 3-4 either Again I'd rather use the back inputs save input 1-2 for mics/ guitars **the Ebtech is a line level shifter, (similar to a DI box), which should use a transformer to bring a -10 dBv signal closer to +4dBu... or something like that. I thought it would bring up the signal to a respectable level, but that may of been a gross error in my understanding of audio engineering and I should be ashamed of myself.**

Oops. yes, I mean TS cables.

Hey all, I am attempting to record audio from my px560 into my DAW, but the level I get from the outputs is very low. My set up was Px560 >TC cables>Motu M4 (outputs 3-4)> Studio one 5 pro. Thinking that the consumer grade line out could be kicked up I got a line level shifter and my setup became px560>TC cables> Ebtech line level shifter> balanced cables> Motu M4 (again outputs 3-4)> Studio one 5 pro. the results were still pretty quiet. I've turned off the casio's speakers, plugged in the headphone jack, but still the line out is still low. The motu has preamps on inputs 1-2 but I use those for mics/ guitars. should I be looking into a preamp or something else to get the px560s line out level up? any suggestions for a preamp or gizmo that will fix this? is there any reason I would want to keep the line out the way it is?