A wonderful clock with a kind of high performance making sounds more musical. I employ Burl B2 Bomber as DAC work platform. B2 sounds more clear in high and very low frequency range and more musical about human voice when its word clock is offered by OCX HD. Additionally, I've compared several clocks around that price range, including Tascam CG-1000, Mutec iClock, Drawmer M Clock Lite and Apogee Big Ben. In conclusion, OCX HD is the optimum one combined working with B2, I think really.