I purchased these tubes as spares for my Berning ZH-270 Amplifier many years ago so I do not have the results of the testing of them done at that time.Apart from the initial test to prove they worked they have had no use in my system at all as they were bought as spares but never used. I only buy and have only ever bought premium quality tubes so I would expect them to test as such. I no longer have the Berning so I am unable to test them sonically. As you can see I have no feedback on AA but I do on Audiogon under bpinder where you will see all my feedback has been positive including a couple of recent transactions so you can buy with confidence.
Shipping US$20 from New Zealand
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