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Hello members - I discovered a great (maybe the greatest) 300B tube and wanted to share a short review with you (I published it few minutes ago on Audiogon)...Here we go:I am an owner of VAC Renaissance 70/70 amplifier that I had for the past 12 years. The set-up of my audio system is quite minimalistic and I am so happy with it that I did not change any major components for several years with exception of the digital source.System: Martin Logan original CLS IIA speakers with updated power supply, two Marti Logan Depth subwoofers, Yamamura Millennium 5000 interconnects, Stealth Ultimate Ribbon speaker cables and APL modded Denon 3910 CD player.I am so familiar with the sound of my system, that I am able to discern any changes generated by different cables or low level tubes. This leads me to the subject of this review: 300B output tubes.Shuguang Treasure ?Black Bottle? 300B-Z is my third set of tubes, the previous ones being VAC tested Golden Dragon and JJ/Tesla. I would hesitate to write this review if the difference in the sound of the system after installation of Shuguang Treasure 300B-Z was not so profound.Original Golden Dragon tubes sounded nice, warm and musical ? unfortunately they did not last for a long time and after 2 years started to sound quite dull. JJ/Teslas were much cleaner sounding in my opinion, although not as musical as Golden Dragons.Enter the Shuguang Treasure 300B-Z: it?s a revelation!This tube does everything right ? the bass is powerful and tight, midrange smooth and liquid, upper frequencies silver and open. It is amazingly musical, with exquisite tonal balance.What surprised me most was Shuguang?s presentation of space ? I did not expect that a set of tubes can have such an impact on the soundstage, increasing perception of depth and width and allowing musical images to float freely without any sense of confinement.As extra bonus you get the light show at night: beautiful purple-bluish glow emanating from the top of black glass enclosures, much nicer looking than a traditional fireplace?Shuguang Treasure 300B-Z is available from Grant Fidelity in Canada (www.grantfidelity.com). Grant Fidelity provides tube matching and excellent service, immediate responses to emails and telephone calls.
Nice review, thanks! I have 4 of these in my Manley Neo Classic 300B SEPP amps. They blow away the https://peblueprint.com/bathmate-review stock bathmate SEDs and the upgrade Sophias I have. It took an honest 300-400 hours to break them in, clear but uninvolving during that time. But suddenly they woke up and are making magic now. I have never heard music like this before.
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