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Red Wine Audio Isabellina LFP-V Edition USB

Evenals de afgeleide Isabellina HPA LFP-V Edition levert deze DAC ongekende prestaties! Deze DA-converter is een juweeltje op zich. De toepassing van buizen in combinatie met een accugevoede opbouw is hierbij zeker bijzonder te noemen.

Detaillering, focus, ongekende dynamiek in combinatie met een absoluut netstroomonafhankelijke werking en daarmee samenhangende ongevoeligheid voor vervuilende invloeden van dit stroomnet, resulteert in een perfecte muziekbeleving. De toepassing van uitsluitend kwalitatieve componenten staat garant voor jaren onbezorgd luisterplezier!

• Richness of tone
• Extraordinary timing/pacing
• Effortless presentation of the music

The Isabellina LFP-V Edition represents the latest generation of our critically acclaimed Isabellina, offering a number of major improvements — both sonic as well as technical.

Unlike many DACs which boast impressive specs but are flawed with an analytical, cold and sterile ('digital') sound, the Isabellina LFP-V Edition delivers a natural and emotionally involving musical presentation that pulls you into the music and doesn't let go!"

Battery operation:

"The heart of any DAC is its power supply. The Isabellina LFP-V Edition uses clean, high-current battery power, allowing musical nuances to emerge with remarkable integrity. By running on internal battery power — isolating itself from the AC power grid — your Isabellina LFP-V Edition frees itself from the entire AC to DC conversion process and associated electrical noise problems that hinder the performance of conventional DACs.

Inside the Isabellina LFP-V Edition is a unique design that reflects our philosophy of using carefully selected and tested premium parts, short signal paths, and going "off-the-grid" with battery power. On the outside you'll enjoy Isabellina LFP-V Edition's simple yet elegant aesthetics and superb build quality."

Every Isabella HPA LFP-V Edition is proudly hand-made in the USA, and carefully tested, inspected and packaged before making its journey to you!

Details

The Isabellina LFP-V Edition offers up to three selectable digital inputs:

• USB (optional) converts directly to I2S, featuring galvanic isolation from the digital source to feed the internal DAC chip (no intermediate s/pdif conversion). The USB input requires a computer or music server with USB port. The power bus from the computer is not used. Instead we provide clean, regulated +5V power from the internal battery supply.
• Coaxial (s/pdif) via 75-ohm BNC input, followed by a digital isolation transformer that isolates noise from your transport and provides precision 75-ohm impedance matching.
• Toslink(optical s/pdif) offering natural noise isolation and avoiding ground loops from source components via the optical transmission cable.

DAC:

• New-old-stock, 16-bit, non-oversampling/non-upsampling D/A chip featuring purist R-2R conversion for a natural, "unprocessed" sound
• No digital filtering for the most accurate impulse response6922 dual-triode vacuum tube.No transformers, no rectifiers, no DC-DC converters, no ribbon cables or connectors in the signal pathAuto-mute delayed turn-on sequencing (approximately 40 seconds), allowing adequate tube warm-up and stabilization, and eliminating turn on/off transients

Tube output stage:

• 6922 dual-triode vacuum tube
• No transformers, no rectifiers, no DC-DC converters, no ribbon cables or connectors in the signal path
• Auto-mute delayed turn-on sequencing (approximately 40 seconds), allowing adequate tube warm-up and stabilization, and eliminating turn on/off transients

• Battery powered with dedicated linear voltage regulators for analog and digital sections
• LiFePO4 battery pack
• New SMART module
• New LiFePO4 battery charger with universal input voltage (100 — 240Vac, 50/60Hz), IEC power input jack and output cable featuring heavy-duty XLR plug
• Premium Vampire input and output jacks

Technische gegevens

• Included tube: 6922/E88CC dual triode
• Accepted tubes: 6922/E88CC, 6DJ8/ECC88, 7308/E188CC, 7DJ8/PCC88, 6N23, 6H23, 6N11, and 6GM8
• Digital to analog converter (DAC): 16-bit, non-oversampling, using purist R-2R conversion
• DAC Analog output stage: Discrete, Class-A transistor output with cathode follower vacuum tube stage
• Number of digital inputs: 3 (USB, Coaxial, and Optical), user selectable
• Output Impedance: Less than 100 ohms
• Output voltage: Approximately 2Vrms
• Power supply transformer / rectifiers / transformers in signal path: None – for the purest possible sound reproduction
• Battery: Red Wine Audio 25.6V LiFePO4 battery pack
• Battery charger: 30V, 2A LiFePO4 battery charger; Input voltage range: 100-240Vac, 50/60Hz
• Typical continuous play time in battery mode between full charges: Approximately 6 hours
• Dimensions: 12" width x 9" depth x 3.5" height (including feet)
• Weight (without charger): Approximately 8 lbs.
• Package weight: Approximately 14 lbs.

Reviews

What people say...

"Isabellina gets music across in a way that is very rewarding in terms of its complexity of tonal and harmonic 'rightness'. This complexity reveals itself as there being sense of "depth" or density to the music; not only in how the Isabellina portrays the sonic tapestry of the music, but the overall "presence" of the music as well. The Isabellina presents many layers to explore and does so with an ease and elegance that is very beguiling. There are no hard edges to the music... no grain or glare to turn one away from spending hours listening to one's collection. No, the Isabellina is very refined while being rich, smooth, lush, and silky, all in the sense of being easy on the ears... as opposed to hard, thin, bland, closed-up, or austere."
Dave Clark / Positeve Feedback Online