ShuGuang/Ruby 12au7 Gray Plates

(7 votes, average: 2.43 out of 5)

“They made my amp sound lifeless. Someone once used the term, “sounds like a cardboard box”, that’s what comes to mind.” Read

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2 thoughts on “ShuGuang/Ruby 12au7 Gray Plates

  1. I decided to give these tubes a try since it was downtime for me, and I thought maybe they would be half decent, but decent they are not. Although the construction of the ShuGuang/Ruby 12au7 Gray Plates looked quite nice with triple mica and supporting rods, it was a huge waste of time. I gave them all the time I could, about 2 hours, without ripping my ears out, but the sound is lifeless, it’s like going back to solid state. High frequencies are brittle, there is no musicality in the sound, and the sound stage is as flat as I’ve ever encountered with tube amps. It was a very painful experience, so if you get them with your amp as base tubes, you should rip them out ASAP and put something better, as you shouldn’t waste your life listening to crap.

    * Construction: Well-built with triple mica and supporting rods.
    * Soundstage: Remarkably flat and lacks any sense of depth or space.
    * Tonality: Lifeless and clinical, with brittle high frequencies that mimic poor solid-state gear.
    * User Experience: A painful listening session that fails to provide any musical engagement.

    Final Verdict: The ShuGuang/Ruby 12au7 Gray Plates is a definitive avoid, as despite its solid physical build, the sonic performance is sterile and unpleasant for any serious listener.

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