TONEAudio Magazine
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<p><strong>When “Perfect Sound Forever” debuted in 1983 in the form of the CD, I doubt that anyone seriously imagined the LP would still be with us in 2011. The compact disc immediately ignited an analog/digital debate among hardcore audiophiles, and while true believers on each side are still holding tight, it’s the CD, not the LP, whose future remains uncertain. No wonder many analog loving audiophiles continue to upgrade their turntables, tonearms, cartridges, and phono preamplifiers.</strong></p>
<p>If you happen to be in that group, Red Wine Audio’s luscious new Ginevra LFP-V Edition Phono Preamplifier should be on your short list. It’s a fully discrete Class-A FET gain stage/buffered tube output, passive RIAA equalization network, and battery-powered design. And that makes the Ginevra the first tube design I’ve seen that doesn’t work off AC power. That said, it’s not all that tubey, and there’s no overt electronic signature. Indeed, the Ginevra’s sound is totally organic. It has substance and weight, so it sounds like live music.</p>
<p><strong>Intriguing Design and Construction</strong></p>
<p>Red Wine founder Vinnie Rossi favors the 6922 (E88CC) dual-triode vacuum tube, and uses it in most of his designs. If you like to experiment with “tube rolling,” feel free to try some 6DJ8/ECC88, 7308/E188CC, 7DJ8/PCC88, 6N23, 6H23, 6N11 or 6GM8 tubes. Since the Ginevra uses just one tube, it won’t break the bank to keep a few tubes on hand, allowing you to change the sonic flavor when the mood strikes.</p>
<p>Moving-magnet cartridge gain is spec’d at 40dB and loaded with 47k ohms. Moving coil gain, at 60dB, is moderate, so owners of really low-output coils may not have enough juice; Rossi recommends using a step-up transformer if you need more gain. Moving-coil loading options are 75, 82, 90, 100, 350, 500, 1k, and 10k ohms, settable via internal DIP switches, and load sockets for individual resistors are provided for owners that prefer custom loads. While separate connectors for moving magnet and moving coil cartridges are provided, the owner’s manual cautions against connecting both types of cartridges at the same time.</p>
<p>It should be noted that Red Wine doesn’t just pack the Ginevra with a bunch of “D” cells and call it a day. No, the preamp boasts state-of-the-art 25.6-volt “Lithium Iron Phosphate” (LFP) battery technology. These low-impedance battery packs are exclusively manufactured for Red Wine Audio and designed for long life. The battery pack includes a built-in, custom-designed cell management board that balances individual battery cells, both optimizing reliability and battery pack performance. The pack is also user-replaceable, and doesn’t require any soldering to install.</p>
<p>Best of all, the Ginevra completely operates “off-the-grid,” meaning the preamp is electrically decoupled when it runs off the battery supply. A full charge lasts approximately eight hours, but for all-night parties or background music, you can run the Ginevra off the AC power supply. The battery charges whenever you play the preamp with AC power and when you switch off the Ginevra.</p>
<p>The Ginevra’s nicely machined, anodized black front panel is the preamp’s most interesting design feature—it’s a very plain-looking black box. The unit measures a scant 12
[Source: http://www.tonepublications.com/review/red-wine-audio-ginevra-lfp-v-edition-phono-preamplifier/]
<p>If you happen to be in that group, Red Wine Audio’s luscious new Ginevra LFP-V Edition Phono Preamplifier should be on your short list. It’s a fully discrete Class-A FET gain stage/buffered tube output, passive RIAA equalization network, and battery-powered design. And that makes the Ginevra the first tube design I’ve seen that doesn’t work off AC power. That said, it’s not all that tubey, and there’s no overt electronic signature. Indeed, the Ginevra’s sound is totally organic. It has substance and weight, so it sounds like live music.</p>
<p><strong>Intriguing Design and Construction</strong></p>
<p>Red Wine founder Vinnie Rossi favors the 6922 (E88CC) dual-triode vacuum tube, and uses it in most of his designs. If you like to experiment with “tube rolling,” feel free to try some 6DJ8/ECC88, 7308/E188CC, 7DJ8/PCC88, 6N23, 6H23, 6N11 or 6GM8 tubes. Since the Ginevra uses just one tube, it won’t break the bank to keep a few tubes on hand, allowing you to change the sonic flavor when the mood strikes.</p>
<p>Moving-magnet cartridge gain is spec’d at 40dB and loaded with 47k ohms. Moving coil gain, at 60dB, is moderate, so owners of really low-output coils may not have enough juice; Rossi recommends using a step-up transformer if you need more gain. Moving-coil loading options are 75, 82, 90, 100, 350, 500, 1k, and 10k ohms, settable via internal DIP switches, and load sockets for individual resistors are provided for owners that prefer custom loads. While separate connectors for moving magnet and moving coil cartridges are provided, the owner’s manual cautions against connecting both types of cartridges at the same time.</p>
<p>It should be noted that Red Wine doesn’t just pack the Ginevra with a bunch of “D” cells and call it a day. No, the preamp boasts state-of-the-art 25.6-volt “Lithium Iron Phosphate” (LFP) battery technology. These low-impedance battery packs are exclusively manufactured for Red Wine Audio and designed for long life. The battery pack includes a built-in, custom-designed cell management board that balances individual battery cells, both optimizing reliability and battery pack performance. The pack is also user-replaceable, and doesn’t require any soldering to install.</p>
<p>Best of all, the Ginevra completely operates “off-the-grid,” meaning the preamp is electrically decoupled when it runs off the battery supply. A full charge lasts approximately eight hours, but for all-night parties or background music, you can run the Ginevra off the AC power supply. The battery charges whenever you play the preamp with AC power and when you switch off the Ginevra.</p>
<p>The Ginevra’s nicely machined, anodized black front panel is the preamp’s most interesting design feature—it’s a very plain-looking black box. The unit measures a scant 12
[Source: http://www.tonepublications.com/review/red-wine-audio-ginevra-lfp-v-edition-phono-preamplifier/]