Korg KMS-30 MIDI Synchronizer

via this auction "Having a clear-out - this little device is invaluable if you want to sync midi devices and/or old-school drum machines and sequencers. It was primarily designed to act as a link between the (then) new standard of MIDI and Korg and Roland drum machines. It can however go much further than that, for example, I used to use this to sync my Drumtraks (midi) with a Linn LM1 (48ppqn) and Roland CR-78 (24ppqn). It has one midi input, two midi outputs, one sync input, two sync outputs and tape sync in/out. All the din syncs can be switched between 24/48 ppqn. It's master clock can be derived from Midi, tape sync or din sync and has an LED indicator. Manual included but you can read it here first"