These tubes came with my Art Audio Diavolo, and I did not put 30 hours on them before settling on a different tube for the pre driver stage. These sounded very nice in the amp, but a pair of Telefunkens were just right.
Tubes are in perfect condition, but come in a pair of white boxes. The stock box just fell apart in storage. These cost me $100 a pair, and the price has stayed the same or gone up.
$50 for the pair.
Regards
Mister Pig
