January 1th 2018 I bought my Amplitrex AT1000 from Chris Terraneau. Since then I tested more then thousands of tubes. As I buy mostly tubes in larger batches (50-200) I have the possibility to measure, select, match and pair tubes in pairs, quads en octets. Buying in larger batches makes it also possible to say in general things about the consistency of measured results. In special applications where noise is a serious problem I use the headphone and the Amplitrex AT1000 amplifier to check for any noise and microphonics. For me personally I got the best test results so far on the Russian 6N2P-EV and the NOS GE 5 Star 5963. Totally consistent results measuring 120% of NOS, no weak tubes and excellent matchability (lot's of 1% matches and balanced triodes). Also I found out: NOS doesn't mostly measure NOS, exceptions noted!
All tubes come with a 90 days warranty. All tubes are checked and tested on the Amplitrex AT1000. However if a tube fails please ask me for a return before shipping back. Unauthorised returns are NOT accepted. Buyer pays return costs. In some cases I can suggest a solution which is fair to both seller and buyer, this to my descretion. Faulty tubes are always replaced with another items unless not available then I will refund.
!! I CLEAN ALL PINS OF THE TUBES I MEASURE WITH DEOXIT D100L FOR ENHANCED CONTACT!!
People can send me their tubes so I can check their life expectancy. Most useful when using expensive tubes with most of the times are scarse and not easy to replace with new tubes! Please send me an email.
Based on 30 years+ experience with tube amplifiers I advice customers to use certain kinds of tubes in their specific amplifiers or advise on tuberolling.
Making a living out of selling tubes I'm proud to give an extrordinary after sales to customers who bought tubes from me. 90 days of warranty, free replacement if problems arise. Always after agreement with you!