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Dear all, Some may have already recognized Mutec’s finally finished new masterclock quietly presented at Axpona. With the launch of the product on Munich’s High End I am able to share some of the technical details with you. I have been in contact with the REF 10 10 MHz clock for the first time in December 2014 with the first prototype presented by Mutec. In short, the goal was to combine even lower phase noise with a precise clock, it looked very promising already at that time. But it took Mutec more time as planned to reach their goals. We have in between seen learning’s of the development in the excellent Mutec MC3+ USB. At the end of Decembers 2016 the prototype measurements confirmed a very high slew rate square and even better phase noise results for the REF 10 as 2014. Finally these are the measurements for the final product: REF 10 phase noise: 1 Hz: ≤ -116 dBc/Hz 10 Hz: ≤ -142 dBc/Hz 100 Hz: ≤ -155 dBc/Hz 1000 Hz: ≤ -160 dBc/Hz Noise floor: ≤ -166 dBc/Hz Part of the development is a sub-1 Hz optimized linear power supply for lowest noise. The heart is an ultra-low phase noise OCXO from Germany. For the techies between us this should give a valid insight. More listening experience to come when I have the REF10 again on my desk. Enjoy the music Thomas P.S. I have no commercial relationship to Mutec. I am testing and measuring hardware and software in my system as some of us do