I set out to create an ultimate early 90s sound setup on my modern machine with both my Roland modules permanently connected to my main machine and on display so I could run Dosbox with any game I want on a whim and have total control over the sound output. Problem 1: Space I have a spare 83 cm desk (Ikea Ivar 50cmx83cm shelving unit used as a desk) and pretty much the whole desk is now occupied by the main PC rig and the sound modules. I hated the idea of stacking them because of how different the sizes are and how messy they look when stacked. Problem 2: Power delivery Both my modules come from either Japan or US with no original power sources. Plug adapters seem to work well but looks ugly as hell. I decied to dedicate a separate power strip for the modules with individual switch on each power plug, because switching modules on and off is more convenient from one centralised location + I thought I maybe will have to add more powered audio tools later. Problem 3: Connectivity Both modules need to receive MIDI signal at any time so I daisy-chained them with a pass-through MIDI cable. They are connected to the PC via Roland UM-ONE MK II USB to MIDI cable and I am very happy with how it performs, no issues so far. Problem 4: Output SC-55 uses standard RCA stereo, but MT-32 uses a 2X mono 1.4" jacks for output. I set to use 3.5mm jacks for sound delivery so I bought a cheap RCA to 3.5mm which are very common and a 2X mono to 3.5mm which turned out to be rare and expensive. Problem 5: Switching between modules I found this Little Bear Audio switches and I thought they look very cool so I decided to give them a try to be able to switch between SC-55 and MT-32 and avoid buying a full-size mixer with features I don't need since a lot of them are targeted at working with microphones, and there are very few minimalistic ones and pretty much zero ideal ones. These mixers would look ugly and out of place when set together with the PC and the modules in my opinion. Problem 6: Mixing module output with digital sound effects with precise volume control I spent a while looking for a decent solution for this. A lot of games use sound modules for music and digitised effects through soundcard for sfx, but there is no common standard with regards to volume on these so I really wanted to be able to control volume for the modules and the sfx independently and precisely. I found DJOCLATE Pepperdecks which I thought look amazing, minimalistic and exactly how I imagine this: a slider for module music and a slider for sound effects. Problem 7: Output signal power, still unsolved With this absolutely awesome setup I found that the output signal is incredibly weak and with all sliders to the max I still have a very quiet output on my Logitech 2.1 speaker system. Unfortunately I will have to replace the Little Bear Switcher with a powered solution and I'm yet to find a small, minimalistic powered audio switcher with 3.5mm inputs and output. Or I could find one with RCA but I will have to rebuy cabling, or I could go with a "messy" route of pro audio mixer. But I think it's too much since I merely need to amplify signal at one point and the rest of the setup looks and works fine.