New Matched Quad (4) Psvane UK-KT88 Black Plate Vacuum Tubes

New Plate Current Matched Quad of Psvane UK-KT88 Black Plate Vacuum Tubes

A new beam power tetrode KT88 by Matched Pair of Psvane featuring vintage-styled black plates modeling the classic British tones of the originals before it. It's hard to go wrong with a tube designed to rival the original KT88.

Testing and/or Matching

At VIVA TUBES, all of our customers get the same high standard of testing and matching. Some sellers charge more for premium matches but we believe all of our customers should get the same level of quality and service. 

Tubes are tested and/or matched at full operating voltage with regulated power supply on a Maxi Matcher tester for general mutual transconductance (Gm). In addition, power tubes are tested/matched by plate current (Ip) and preamp tubes are tested/matched by gain. Rectifier tubes will be tested for emissions on a calibrated military grade tube tester. 

Our goal is to match within 5% with an upper limit of 15% (15% is the industry limit to consider a set).

Hand written test data included.

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.