The monitor on the left (Acer 77c) is driven by a fairly nondescript tower out of shot. It contains a Pentium-S 90mhz, Diamond Stealth 3D 2000, Voodoo1 and Labway A151-830 (OPL3) sound card. Runs DOS 6.22.
The all-in-one to the right of that is a Compaq Presario 425, running the stock 486sx/25 CPU, RAM maxed to 20MB and a Soundblaster 16.
Flanking the displays is a pair of Apple M6082 powered speakers, refurbed with new drivers.
Along the middle shelf: Aten CS-122 KVM, Roland SC-55 (driven by the Pentium system), and Roland MT-32 (driven by the 486).
Along the front are a Roland MX-5 mixer (such a perfect looking thing but not in great shape; I had to retire it soon after this photo was taken), a fairly ordinary dome keyboard, MS mouse and MS Sidewinder 3D Pro.