Mullard CV2493 / E88CC-01 / 6922 / CCa matched pair brand new never used in Swedish Royal Air Force two-set styrofoam boxes with pristine gold pins and pin guards. Mullard never made better than these. They were produced at the Mullard Mitcham factory the 1st week of April, 1976 (R6D1) as matched sets and have the famous dimpled disc getter. They have been recently released from the Royal Air Force's military surplus, so they are brand new with 10,000+ hours of life left on them. You just don't see these on Audiogon and I have two match pairs still available from the same batch.
The E88CC-01 / CV2493 is the premium version the Mullard E88CC / 6922 (think CCa from Siemens). They have all the body, weight, bass, impact, soul and amazing 3-D midrange that Mullard is famous for, yet the E88CC-01 adds an extended, airy, refined and detailed top end to give a fully balanced and comprehensive performance. You will be floored by their sound and will instantly know they are the best Mullards ever made in the 6DJ8 family.
These were matched at the factory and then retested every 5 years or so while they were on active duty with the Air Force, so they are at the best of the best and ready for action. I have fully tested for noise, gas and shorts. New Mutualconductance (gm) on my calibrated Hickok 600A is 9,250 / 9,250 this pair tested:
Tube 1: 11,000 / 11,000
Tube 2: 11,000 / 11,000
Price is $199 for the set plus $9.50 for USPS Priority Mail shipping with $200 insurance in the US. International shipping is determined by country of final destination.