Bel Canto Design DAC3.5VB manual

Because the DAC3.5VB runs cool, it can be placed in many system locations without compromise. We do not recommend placing weights or other objects directly on the DAC3.5VB. This may scratch or mar the chassis finish. Do not use harsh chemicals when cleaning the outside of your DAC3.5VB.

Single Ended RCA and Balanced XLR connectors are available. XLR jacks allow balanced hookup using the standard North American pin configuration:

Pin 1 Ground

Pin 2 Signal +

Pin 3 Signal -

IMPORTANT!

Make all connections before powering your unit!

•Master Reference Ultra-Clock with high rate jitter filter ensures maximum dynamic range from any source.

•110dB dynamic range 24/192 ADC input for your analog sources

•8 Digit Alphanumeric Green LED Display

•Internal VB supply with LC filter and >400,000uF of capacitance

•Uses the VBS1 or LNS1, Custom Ultra-Low noise switching supply for isolated analog power

•Critical analog supply filters using new Solid Polymer technology capacitors

•5.5Vrms balanced output level to drive any amplifier

The DAC3.5VB musical performance rests on the solid foundation of the Master Reference Ultra-Clock™. The Master Reference Ultra-Clock™ provides jitter performance 50x better than other clocks. Specifications of 2 picoseconds RMS and frequency accuracy of 0.0001% insure maximum dynamic range. The Master reference Ultra-Clock circuit uses a new aggressive 2Hz jitter filter, insuring that any incoming jitter on the data inputs can not compromise the final analog output signal quality.

The DAC3.5VB has been optimized to provide the highest level of performance for all of these critical functions. It provides digital preamplifier as well as D/A conversion and bridge from traditional CD or DVD player sources and from a USB LightLink input for computer music playback sources.

All digital input sources experience 2 jitter rejection stages, one analog PLL stage at the SPDIF input and a second 2Hz digital PLL stage that rolls off incoming jitter by more than 10X at 10Hz frequencies and greater than 10,000X by 100 Hz. Any incoming jitter at frequencies above 10Hz is reduced to levels that have no effect on measured or sonic performance. The combination of the VBS1, internal VB stage and the new jitter filtration provide an extremely well isolated environment for the DAC3.5VB Digital to Analog stage. The final conversion to analog is no longer subject to external noise and interference sources and the resulting purity and dynamic quality is uniquely musical and compelling. See page 9 for back panel.

The High Dynamic Range analog input section provides 110dB of dynamic range for any of your analog sources-it can be connected to a PHONO3 preamplifier for a complete system including a turntable source, or it can be configured as a Home Theater Bypass to integrate into a complete high performance system offering the best performance for your 2-channel sources.

The dual-differential multi-bit delta-sigma DAC circuit achieves remarkable analog performance. The 5.5VRMS true balanced XLR outputs provide 126dB of dynamic range. The noise floor of this DAC/processor is so low and so clean that the DAC3.5VB is optimally used as a complete DAC/Preamplifier with a digital level control. Because of dither applied to the 24bit word there is no loss of effective resolution. The application of optimized dither insures that the analog output noise floor maintains a clean sound, devoid of any tones or artifacts. The DAC3.5VB can provide an optimum solution with the addition of a Bel Canto e.One amplifier, eliminating the need for an analog preamplifier.