The midiclock+ build by E-RM Erfindungsbüro is a professional masterclock solution that greatly improves synchronisation of MIDI, DIN-sync and modular systems. 
The tempo of the jitter-free clock signals can be set in a range from 
40-300 BPM and is available on two individually configurable outputs on the back of the machine. 
Start, Stop, Continue ?& Resync control the playback of all connected machines and ensure a tight sync of DAWs, sequencers, drummachines and everything else that can be slaved to an external clock.

technical details

2 x MIDI/DIN/Modular output 
1 x USB (power supply)