Używany dzielony DAC Bel Canto 3.3VB z regulacją głośności z zewnętrznym zasilaczem VBS1 (dla max. 3 urządzeń Bel Canto). Made in USA. Sprzęt posiadam od kilku lat, stan technicznie idealny, widoczne typowe ślady użytkowania. Cena nowego w USA 5.000,- USD (DAC+VBS), jakość dźwięku - był kilka lat w kategorii A zestawienia Stereophile Recommended Components Digital Processors. Jest to pierwotnie DAC 3VB (max. 24/96) z firmowym upgradem do DAC 3.5VB Mk II (max. 24/192). Ze względu na wyświetlacz z DAC 3VB oraz brak ST Fiber (jest za to USB) oficjalna nazwa modelu to DAC 3.3VB. Parametry techniczne urządzenia w pełni odpowiadają DAC 3.5VB Mk II. Upgrade zleciłem w lutym 2017 u autoryzowanego dealera Bel Canto w UK (koszt 750,- GBP). Powyższy upgrade to wymiana całej płyty głównej. Producent w ramach ścieżki aktualizacji urządzenia umożliwia dalszy upgrade do obecnej najwyższej specyfikacji 3.7 - (DAC3.7 UPGRADE, install new precision Clock at a cost of € 595.00). Zegar to jedna różnica pomiędzy oferowanym moim urządzeniem, a aktualnym modelem Bel Canto DAC 3.7. W komplecie oryginalny pilot (zmiana źródła, regulacja głośności itp.), 2 x oryginalne kartony, 2 x kable Bel Canto VB Power Cable 2pin to 2pin (jeden kabel jest dodatkowy). Zdjęcia sa ze strony producenta oraz jedno zdjęcie zapożyczone (u mnie sprzęt nadal jest podłączony w szafce audio i ciężko zrobić dobre zdjęcie tylnych paneli). Ostatnie zdjęcie jest moje - widok wnętrza po wykonaniu upgrade (widać m.in. oznaczenia 3.5 ma płycie głównej). Sprzedaż prywatna.

DAC 3.3VB (jak poniżej, ale bez ST Fiber)

The Bel Canto Dual-Differential DAC3.5VB MKII Control Center features a class leading 126dB dynamic range with our proprietary low noise digital to analog convertor core. Including five 24/192 digital inputs, high speed ST fiber and a 24/192 ADC analog input, the DAC3.5VB MKII integrates and controls all of your audio sources including an analog input for a phono preamp or Home Theater Bypass. The front panel features a single multifunction control knob that selects inputs and controls volume level. The DAC3.5VB MKII also includes our new 8 character alpha-numeric display and the ability to control balance, absolute phase and to rename and disable unused inputs.

The foundation of the DAC3.5VB MKII is our jitter-eliminating Master Reference Ultra-Clock circuitry that ensures that jitter from any source is reduced below the audible threshold. The 24-bit digital volume control is completely transparent and accurate throughout the volume range. This precision continues with custom Caddock resistors, class-A output circuitry and low noise power supply components. The heavy-gauge all-steel chassis design prevents mechanical resonance from compromising the audio signal quality.

The internal VB supply is designed to be driven from either our LNS1 or VBS1 virtual battery supply and includes a massive 400,000uF of filter capacitance and a sophisticated ultra low noise isolated switching supply for the analog section. All of this technology prevents power line noise from corrupting the delicate audio signals.

Green, low-heat, efficient isolated power supplies and a finely-tuned analog output stage make possible Bel Canto’s eco-friendly compact designs; Bel Canto music products are fine instruments that are musically satisfying, discrete and sleek enough to fit any room.

Digital Section:

24bit Data at 192Ks/s: AES XLR, SPDIF BNC/RCA, ST Fiber Toslink

Master Clock jitter: 2picosecond RMS

Analog 24/192 DAC Section:

Maximum Output: 5.5 Vrms balanced XLR, 2.5 Vrms RCA

Output Impedance: 200 ohms balanced XLR

Frequency Response: 20 Hz-20 KHz, +/- 0.25dB

THD+N: <0.0015%, 5.5Vrms balanced out, 1KHz

Output Noise: 3uVrms A-weighted 20Hz-20KHz

Dynamic Range: 126dB A-weighted 20Hz-20KHz

Analog 24/192 ADC Section:

Maximum Input: 2.5 Vrms RCA

Input Impedance: 12K ohms RCA

THD+N: Dynamic Range: 0.003%, 2.5Vrms in, 1KHz

General:

Power Usage On: 8W

Power Usage Off: 0.0W

Power Requirement: 12VDC

Dimensions: 8.5” W x 12.5” D x 3.5” H (216 mm x 318 mm x 88 mm)

Weight: 14lbs. (6.5 kg)

VBS1

Ultimate audio purity starts with the cleanest power supply possible. The VBS1 provides the lowest noise of any power source to best drive all your VB compatible Bel Canto e.One Control and Source components.

The battery is considered the absolute reference power source for sensitive audio circuitry; low noise, high current and isolation from the AC Line make it ideal, but environmentally impractical. Bel Canto re- defines this ideal power source with our Virtual Battery Supply (VBS) technology. The VBS1, built in a compact, heavy gauge, all steel chassis, provides the ultra low noise, high current and power isolation for our precision digital and analog audio control components. You can use it to drive up to three front end models; CD2, DAC or Preamp analog control components without compromise.

The foundation of the VBS1 is based on intricate stages of filtration. The initial pre-filtration stage supplies the low noise rectification and high energy storage to the SMPS that restructures the power to high frequency energy outside the audio band. This eliminates any possibility of the noise affecting the audible signal. The output filtering has a massive bank of LC filtration providing over 100 dB of isolation starting below 100 Hz and the Polypropylene capacitors ensure hundreds of amperes of peak current across the wide frequency spectrum are delivered equally for up to 3 front end components.

The impact of using the VBS1 is a substantial increase in resolution. Most significant is how natural the images and sounds are articulated within a larger, deeper soundstage. The VBS1 low noise floor makes way for increased resolution and detail like never before, accompanied with an even more natural sound quality.

Green, low-heat, ultra-efficient heavily regulated switch-mode power supplies and switching output stages make possible Bel Canto’s eco-friendly compact designs. Place two Bel Canto products in the space formerly occupied by a large, hot-running, inefficient design!

Bel Canto music products are fine instruments that are eminently satisfying, discrete and sleek enough to flatter any room.

Specifications:

Maximum Output: 12VDC at 3A

Output Voltage: 12VDC +/- 5%

Output Voltage Noise: <6 Microvolts RMS, un-weighted 20 Hz-30 K

General:

Power Usage On: 5W to 20W typical, 1 to 3 devices powered

Power Usage Off: 0.0W

Power Requirement: 12VDC

Dimensions: 8.75” W x 12.5” D x 3.5” H (223 mm x 318 mm x 88 mm)

Weight: 13lbs. (6.2 kg)

Z recenzji:

SoundStage!, Jeff Fritz, August 2013

“…the Bel Canto stack stacks up well against the DACs that many feel are among the best available, and at less than Arab-sheik prices. They’re sonically very well balanced across the board, but are simply superb in the midrange, where lots of music needs it most.”

Stereo Times, Russell Lichter, Feb 2012

“…the increase in musical pleasure is undeniable and unmistakable.”

Stereophile, Erick Lichte, June 21st 2011

“I thoroughly enjoyed my time with Bel Canto’s e.One DAC3.5VB. It does everything you might ever need a DAC to do, and I’d put its sound as being among the best I’ve heard. In fact, the only other digital sound I’ve enjoyed significantly more (in an environment I was familiar with) was when I heard the Meridian 808i.2 CD player ($16,995) at John Atkinson’s house. Yes, I do think the e.One DAC3.5VB is good enough to stand comparison with a front-end of the Meridian’s caliber and price. The Bel Canto’s styling, build quality, and performance make it an obvious contender for Class A of our “Recommended Components,” and one of the best D/A converters I’ve heard.”

Positive Feedback, Robert Learner, May-June 2011

“The Bel Canto 3.5VB strikes as a fundamentally honest DAC. … No doubt a lot of listening went into the design but this isn’t a DAC that sounds voiced. It’s more about fidelity to the source. … It has a super-clean, upfront presentation … It sounds full-blooded, yet not afraid to the let sharp, edgy attacks through. This increases the jump factor … The utter lack of noise present in the unit … super-clean … no muffling on either a macro or micro level. What’s there is heard. … Great detail with no slurring anywhere in the frequency spectrum. … Lack of roll-off at high frequencies … Low noise plus high frequency purity and extension yielded the best sense of attack … The high resolution/low noise also likely contributes to the superb handling of decays through the Bel Canto … never seemed foreshortened … I still value an upfront, direct communicator above all. I’d sacrifice the subtle, beguiling midrange glow of the Ayre, and the slightly deeper, more 3D presentation of the Berkeley for the direct feed quality of the Bel Canto.”

Inner Magazine, Kai Ekholm, Jan 2011

“The DAC3.5VB brought a totally new control and level of quality to the whole variety of my digital music collection. … When the Bel Canto DAC3.5VB was part of my system, I found myself feeding the CD transport with CDs after CDs, and I felt again the joy of this wonderful hobby.”