via this auction


Demo of the actual unit in the listing previously posted here. You can find posts and demos featuring different color schemes of the Zeit here.
via the listing: "I am selling a Zeit hardware MIDI sequencer made by Infection Music. I am the original owner of a 19" rack mount version, serial number 005, in complete working order. It is in near-mint condition aside from some minimal marks around the rack mounting holes and a couple of dents in the outer case (one in the back and one on the bottom) that were present on delivery in 2006. The dents do not break the surface paint.
The Zeit runs OS V01-39BR, which is stable and is nearly the final version produced. It is possible to upgrade to 41BR, but I am leaving it as per the manufacturer's advice. The following updates were minor, and it's best not to fool around with a functioning Zeit. The manufacturer no longer supports issues that might arise from an OS upgrade and is working on completing a CPU upgrade to extend the Zeit's lifespan.
I installed an upgraded CPU in 2009 received from the manufacturer, which may be why this one is still working correctly. I have a letter detailing the improvements in the new CPU. I received an email from the manufacturer in October 2022 stating that a new CPU upgrade should be available reasonably soon at an expected cost of no more than USD 200. The upgrade will dramatically increase program memory, add an SD card slot, and add USB.
A printed operating manual is included in the box. I have the manual in PDF form and can email it to anyone interested in learning more about the Zeit.
This is as rare a piece of electronic music-making gear as you might imagine. It was designed to be the ultimate hardware MIDI sequencer, which is impressive. I believe eleven rack mount units were produced, with probably a similar number of desktop units.
I made the attached Youtube video shortly after receiving the Zeit in 2006."