I have a quad of Shuguang Treasure KT88 tubes that are 3+ years old and I'm starting to shop a replacement set.
I'm thinking of a set of these and I'm wondering if anyone has any experience with these:
Northern Electric KT88 (Graphite)
The NE-KT88 is a radical new design. For the first time ever a KT88 tube utilizes a solid, thick and completely unique graphite plate (anode). This improves tube life and reliability on top of providing outstanding audio amplification characteristics.
The Northern Electric KT88 audio tube is made with the highest quality materials, from the thick glass bottle to the copper and ceramic base with gold plated pins. The NE-KT88 is carefully handcrafted. Each build stage is measured and verified on state of the art equipment. Then a battery of tests must be passed to make it into your hands.
This new KT88 has been three years in the making. Numerous designs were evaluated, rejected and/or revised until we were satisfied we had the best KT-88 tube on the market today. Everything was designed to give you unsurpassed audio quality which you really need to hear.
The Northern Electric KT88 tube's low end is deep and controlled. The midrange is full and exceptional for vocal, classical, and jazz recordings. The high end is smooth and fairly well extended. The overall sound-stage has great separation and clarity.
Northern Electric had a rich history of producing high quality audio products and vacuum tubes in Canada. We are now re-introducing this classic brand and bringing to you the highest quality tubes possible.
http://www.thetubestore.com/Tubes/KT88-Tube-Types/Northern-Electric-KT88
