Very low hours on these, probably less than 5 if I had to guess. I bought these from Viva Tubes when my Splawn Nitro was out at Scott's shop getting the "fullly loaded" mods added to it, and I had him put them in while it was there. Got the Nitro back, and didn't really care for the KT's in that amp so I had my local amp guy put it back to EL34's. These have just sit dormant since then. $200 shipped anywhere in the Con U.S., Paypal F/F
