DCS VERONA MASTER CLOCK

DCS VERONA MASTER CLOCK in excellent condition.

S/N VRN097612

https://www.stereophile.com/content/dcs-verona-master-clock-page-2

https://dcsltd.fra1.cdn.digitaloceanspaces.com/media/2014/04/Verona-manual-v1_1x-English.pdf

Local pickup available in Los Angeles.

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Maier Shadi
Phone Number: (310) 863-0863
Email: [email protected]
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Housed in an enclosure that looks identical to the Purcell upsampler's, the Verona features a highly stable (±1ppm, or parts per million), crystal-controlled oscillator from which is derived a standard TTL word-clock reference signal running at 44.1kHz or 48kHz. This signal is available on five 75 ohm BNC output jacks on the rear panel. There are also three RCA jacks providing a 1V p–p, S/PDIF-formatted datastream with the same clock reference frequency.
There is also an External Reference word-clock input on a BNC jack. This overrides the local crystal oscillators and will accept either TTL or bipolar clock signals—the latter are available from, for example, a 10MHz GPS receiver or an atomic clock. (The ability to sync to a GPS clock will be useful for occasions where musicians are working on the same recording project despite being geographically separated.) The Verona's input receiver has a pull-in range of ±300ppm and takes around 12 seconds to lock.
Very unusually, the Verona's clock outputs feature switchable dither. According to a conversation I had last year with dCS's chief engineer, Mike Story, the use of dither (a small random timing offset) avoids the "dead zone" that receivers using a phase-locked loop with a very narrow acceptance window can suffer from. The dither noise—said to be statistically well controlled so that the noise energy averages out to zero in the long term—ensures that the receiving PLL remains locked to the Verona's output with the minimum of jitter. The dither itself is filtered out by the PLL.