These are tapered as well. I'll get an actual measurement when I have the tubes out but I think chances are they are the same as always. I bet they just seem bigger to me because the sockets and cutouts are lined up correctly on this one. If its bigger it's a couple mm at most. This is what I always do but I did double check. I didn't find anything that would explain the difference. Whatever is going on the result is volume level is noticeably easier to dial in so Im definitely not complaining about it. On a different note, have you guys seen the LP measurments over at Audio Science Review? The guy is clearly avidly again tube amps but he calls the LP the best tube amp he's ever measured. Interestingly his measurements look a little different than @atomicbob, participially in regard to the power supply. ASR measurements show the PS being substantially more noisy. Im not knowledgeable enough to even guess why that would be. Any thoughts?