New Matched Quad (4) Psvane Treasure KT88-Z Smoked Vacuum Tubes

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New Plate Current Matched Quad of Psvane Treasure KT88-Z Smoked Vacuum Tubes

This is a tube with a confusing and interesting history. These KT88-Z tubes are produced by Psvane which was copied by Shuguang. Shuguang's version of the KT88-Z eventually became more popular due to name recognition, however this is the KT88-Z that you want. It's the original design from the manufacturer that created it. 

The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of the treasure series, this is one of the more high-end tubes that they produce. As such, they sound extremely detailed in hifi amplifiers and also work great as a guitar tube.

A note on Psvane packaging & testing

You are most likely familiar with seeing Psvane tubes sold in proprietary Psvane packaging, factory tested, and/or matched in pre-made sets. In order to provide a wider variety of sets (including singles), we hand-test and match all of the models that we carry in-house. We test and/or match by Gm, Ip (plate current) and/or gain with a maximum range of +/- 15% on modern Maxi-Matcher testers. While 15% is our maximum, we strive for 5% when possible.

Extended Psvane Guarantee

 We offer a full one-year guarantee covering functional defects - including noise. The guarantee period begins the day you receive your order.

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2 Reviews

  • 5

    Posted by Chris on 29th Dec 2023

    Just put 4 of these in my Rogue Cronus Magnum III and WOW WOW WOW - it’s the best this amp has ever sounded! And they are very quiet, they have my ZU Dirty Weekends sounding so good. Highly recommend.

  • 5

    Posted by Paul Clay on 3rd Aug 2023

    This is one of the best KT-88z tubes rather they be current or NOS production. This tube is what I would call the utmost in balance. It does the entire frequency well and is quiet. Let's not forget that it's a damn good-looking tube as well. I think it would serve any application well that calls for the KT-88. Bass, detail, balanced mids, and high frequencies.

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