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Red Wine Audio Isabellina HPA LFP-V Edition

Sla de vele lovende reviews op de diverse HEADPHONE-forums er maar op na... Deze hoofdtelefoonversterker met ingebouwde DAC levert ongekende prestaties! Zowel de hoofdtelefoonversterker als de DA-converter zijn juweeltjes 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!

(Opmerking: betreft uitsluitend hoofdtelefoonversterker)

"Isabellina HPA LFP-V Edition (HeadPhone Amplifier) delivers a highly-resolved and seductive headphone-listening experience. Engineered for the avid music lover, it couples warmth and tone, while uncovering subtle details and delicate spatial cues hidden deep within your music collection.

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

Two highly acclaimed products. One cost-effective solution:

"Isabellina HPA LFP-V Edition combines the headphone stage used in our Isabella LFP-V Edition preamplifier, with a full-featured Isabellina LFP-V Edition digital-to-analog converter. One listen and you'll know it delivers a level of sonic performance discriminating headphone users will find hard to beat at any price!"

A simplified, yet flexible upgrade path:

"Standalone DAC: Isabellina HPA LFP-V Edition has a line-level outputs, so its internal DAC can also be used with your two-channel system at home, or even a computer-based system at work.

Linestage for digital sources: If you want your digital music to go directly to a power amplifier, we can configure your unit with variable (line-level) outputs. Then it can control volume and digital source selection, saving you the expense of buying a separate linestage."

Battery operation:

"Like its sisters Isabellina LFP-V Edition and Isabella LFP-V Edition, Isabellina HPA LFP-V Edition runs off-the-grid, using high-current battery power. Battery operation coupled with compact packaging make it transportable, so you can enjoy great sound wherever you want. And the remote volume control makes enjoying your music collection that much easier."

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

• Isabella LFP-V Edition headphone stage
• Isabellina LFP-V Edition digital-to-analog converter, with three selectable digital inputs: USB, Coaxial, and TOSLINK/Optical
• Remote volume control
• Vcap reference-grade OIMP capacitors
• UF-OCC wiring in signal path
• Red Wine Audio 12V SMART module

• 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
• Remote volume control, using motorized Alps potentiometer
• 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 voltage: 2Vrms max.
• Headphone output: 1/4" stereo output jack
• Minimum headphone impedance: 16-ohm
• Headphone stage gain: 6db
• 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...

"I've reviewed and auditioned a lot of headphone amplifiers over the years, but Red Wine Audio's Isabellina HPA LFP-V Edition stood out from the pack... It sounds remarkably pure, detailed, and clean, but without any false clarity." "...acoustic music sounded a giant step closer to the way it does in real life..." "... Isabellina sounded more like live music."
Steve Guttenberg / Cnet reviews

"...Red Wine Audio Isabellina is the best USB DAC / amp solution I have heard. There's nothing more to say really, this is quite clearly the best sound I have heard coming out of my headphones, and by quite a margin."
Daryl Hoffman / Headphonista

"...it let me enjoy the music without feeling that I was listening through headphones, disconnected from reality. Its freedom from the AC grid allowed it to provide the purest music signal, elevating my enjoyment of what truly matters: the music."
Uday Reddy / SoundStage!

"In twenty years of performing and recording, I have never heard anything that approaches the natural sound of the HPA for acoustic music."
Chris Fátóyè Theberge / Grammy-nominated Jazz artist