I thought I needed more splitters too, using drumbrute as master clock and two BSPs. I only have one splitter coming off drumbrute. But, I remembered midi thru on my synths and was able to use that.
So one BSP receives the clock, and goes out to synth one on channel 1 then out the synths midi thru to synth two on channel 2, and it works as if i had a splitter there.
Two BSP's! I'm jealous. I want a black one, but keep buying other things, like a Keystep and a Pyramid and a Streichfett and a MIO4 and an old VM200 mixing desk. There is something magic about flying faders.....
It's disappointing that the old convention of putting a thru port on a synth as well as an out is now not so observed. Fair enough the output port can also echo the input, but it's always nice to have the clean feed available. My first drum machine was bought from someone who bought the it on the strength of the thru port and used it as a splitter/extender to record an album for some famous band (P.I.L), not that it made a single sound on any of the tracks!
Novation SL controllers had 2 output ports as well as a thru. The output ports could be programmed to also echo the input port so to act as additional thru ports, essentially giving them 1in3out splitter functionality. In the past I've bought a 2nd hand X-Station purely as a controller/MIDI splitter after remembering what my R70 was purchased to do. I never once used it's synth or the audio interface before the screen died and then I put it under one of my stands. I can still program it as a controller/splitter, just a matter of plugging it into a computer and running the editing software, but it's spot on the stand is now taken by a Minibrute
The MIO4 is a great little MIDI interface/patchbay/processor. It has 4in and 4out regular DIN sockets but also a USB host port which can be plugged into a powered USB hub so as to address upto 8 USB MIDI devices. This means that a Novation SL plugged into it adds one input and three output DIN ports to the router. I have two controllers from the SL range making the box into a 6in/10out patchbay for the price of a 4/4! Only drawback is it's not programmable from the front face. It's programmed via software and patches can be saved as sysex to be fed to the MIO4. I can create a bunch of patches for foreseeable needs then put the sysex into buttons on an SL to send when needed, but it's no ME80P in regards to on-the-fly patching.