Since both the MPD and mm6 have USB sockets it would be simpler to connect each to a USB socket on the PC. Daisychaining is useful, but each link in the chain sees MIDI slightly delayed from the one before it. With each device on it's own port in Sonar that issue doesn't exist.

Having each attached device showing up as its' own MIDI port in Sonar is also very useful when it comes to easily identifying where you're sending a track's output or where input is supposed to come from.

In your case it would add loads of hardware complication as well (I'm not even sure if there is a convertor that turns USB from a synth into MIDI and vice versa, if that's what you mean).

Try using a small USB 2x or 4x hub if you're short on USB jacks.
 
Steve

tlw

Since both the MPD and mm6 have USB sockets it would be simpler to connect each to a USB socket on the PC. Daisychaining is useful, but each link in the chain sees MIDI slightly delayed from the one before it. With each device on it's own port in Sonar that issue doesn't exist.

Having each attached device showing up as its' own MIDI port in Sonar is also very useful when it comes to easily identifying where you're sending a track's output or where input is supposed to come from.

In your case it would add loads of hardware complication as well (I'm not even sure if there is a convertor that turns USB from a synth into MIDI and vice versa, if that's what you mean).

Daisychaining works for me without any problems.  But it will not work here unless the OP's keyboards both have midi in/out and also at least one of them does not rely on a usb connection for power.

Will using a 2x or 4x hub cause a delay like daisy chaining? my mpd does not have midi ins and outs, only one usb and thats it. and it also relies on that usb for power ha so i guess daisy chaining is out of the picture for me.

1+ TLW...I like to be visually clear myself...

Kev999-

I have some stuff daisychained myself (especially if working live without a computer). It's not my preferred way of working though.

This may help -

One little box, combines / routes / filters:
 (2) iOS devices or iOS+PC, (2 sets) MIDI DIN In/Out, and up to (8) MIDI USB devices via USB hub.
12 total addressable MIDI ports!
 
Can link devices either WITH or WITHOUT a PC or iOS device in the mix.
IMHO, the "Swiss army knife" of MIDI interfaces:

http://www.iconnectivity.com/iConnectMIDI

Interesting.