Hi Jeff, I don't know.... those pics are from Matt's bench. He says the amp sounds great with Psvanes in it. He is burning it in with those, I sent him a pair of Mullard e180f and RCA 5r4gy which I would expect him to use when he fires it up tomorrow or Tuesday with Western Electric 300b. He wanted to log all the burn in hours on the Psvane , then he will run it in a little with the WE. He plans on shipping it out later this week.