Bill
Verified Member

Posts: 14
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Pair of Siemens E288CC tested on my calibrated Tripplett 3444 tester. With original boxes, these tested well above NOS for a 6922. Readings are 21K/20.5K & 20.5K/20K. 100%=10K. These tubes work great in the CSP3. Can't vouch for how they work in any other preamp.
Asking $130 which includes paypal and shipping to CONUS
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