Grimm Audio CC1 V2 Master Clock

The Master of Timing

Grimm Audio’s CC1 V2 brings the incredible clock stability of the AD1 to your current setup! The CC1 V2 accepts Word Clock and distributes a super high quality Word Clock sync to all equipment in your system. Alternatively, use the CC1 to reclock and de-jitter the s/pdif digital audio connection between your CD transport or media server and DAC (a set of XLR-RCA conversion cables is provided with the unit). Now, any studio or high end system can benefit from some of the features of our AD1’s unique sound quality like ultimate musical timing and stability of tone.

“With regards to a clock, accuracy and stability are two very different things.”

Grimm Audio’s extensive research into the correlation between jitter and sound quality brought to light that emotional response to music is vastly more sensitive to jitter than previously realized. Attention turned from “making jitter low” to achieving the most stable clock possible.

Marketing tends to express a clocking circuit’s performance in a “the lower the better” ppm (parts per million) or picosecond (1 picosecond = 1 trillionth of a second) number. Hence the claim that Atomic clocks are “the best” for audio because of their accuracy.

Atomic clocks are “accurate”.Some are only a second off in a century (about three billion seconds): an average accuracy of 0.3 parts per billion or 0.0003ppm. That’s the sort of thing they were designed for. Does that imply that they are only one three-billionth of a second off in one second? Not at all. When a clock runs one millisecond late during one second and one millisecond early during the next, it’s basically correct again. So long as these short term errors don’t accumulate over time, they do not disqualify the clock as a timepiece. But you will agree that it would not merit the name “stable”.

On the other hand, a clock that is one second off every day could still manage to slice every second into tiny slivers that are just perfectly equal. Accuracy and stability are two very different things.

“Owing to a radically redesigned discrete crystal oscillator, CC1’s clock stability betters that of even the best test equipment available.”

Grimm Audio’s research turned up a surprising array of previously underestimated performance factors that affect a clocking circuit’s stability, like power supply noise, oscillator control circuit noise and low-level crosstalk. The end result is that owing to a radically redesigned discrete crystal oscillator, clock stability betters that of even the best test equipment available.

To sync to an external reference the CC1 sports a PLL offering an astounding 90 dB of jitter suppression at 10 Hz, further improving at 60 dB/dec. The CC1 offers base rates of 44.1kHz and 48kHz and 1/2/4 multiples in separately selectable groups, in addition to an AES/EBU reclocker for cleaning the digital feed to your DA converter. Like all Grimm Audio products, the CC1 features striking styling and solid build quality.

Features:

• ultra-low jitter clock source
• generate and slave to word clock
• s/pdif reclocking
• sample rates from 44.1kHz up to 192kHz
• two independent sample rate groups