Valve Art tubes are made in China
Some words about tube matching.
We ship out VALVE ART allways matched. We have a collection of finest tube testers here, and big tubes like KT88 and KT66 are re-tested
and re-matched at JAC Music.
We re-match the big penthodes at the same values as Electro Harmonix
uses for their tubes. The Electro Harmonix values they do not give
out, but from the many shipments we have, we were able to reconstruct
those values of course.
These are matching classes often used in HiFi industry. We use
Unmatched tubes can have differences of 300%, and still are good
tubes by itself. So on a tube tester, these will pass as a new tube.
However, it is obvious that a pair with 300% difference will not
sound good, because one tube must work much harder than the other. Loss
of maximum power, and extra distortion will result from it. The "best" tube of an unmatched pair will do most of the work, get warmer from this and die
sooner. So use only matched tubes, for lowest distortion, highest output power and optimized lifetime.
- Plate current below 2.5% difference = best possible match. Also called
- Plate current maximum 5% difference = very good match. Also
called GOLD match.
- Plate current maximum 10% difference = "good match".
This KT88 is said to be made on original
old machines from the M.O. Valve company, UK.
The tube base is kitted to the glass,
so you won't have any vacuum defects due by mechanical stress from
pulling out the tube often. (Note: This is a weakness of some KT88,
like TESLA) . We offer a version with a nice polished nickel plated tube
Very rugged version. Can be used for HiFi
or Guitar amps.
The Valve Art KT66 is one of the nicest Chinese tubes available.
This tube is made with the original tools of the G.E.C. Company,
who produced this tube in England. The KT66 is the European
version of the 6L6, but I the KT66 is much better. For instance the
KT66 was used by the Company QUAD for their HiFi amplifiers, but the 6L6
didn't make it any further than a guitar tube.
High Resolution image
- High Resolution side view
for this picture!
Click here to enlarge
What is so nice about the KT66, this tube has a hand blown
tube base, just like the original English tubes. Click on the left image
to get it magnified, and you will see the details.
Check here for a picture of the original KT66 from the G.E.C., UK. You
will see the Valve Art is a perfect replica, using the original old machines
from G.E.C. ----> KT66-G.E.C.
Nice copy of the original 6550 tube, with original cylinder glass.
The Valve Art has three getters for long lifetime.