Been around 6sn7 tube preamps for a while. I had a Schiit Freya+ previously and my buddies have had them for a number of years. In my opinion I think the 6sn7 tube is the most musical preamp tube. Aric takes his stuff to another level. The Coda didn't last. I just couldn't hear what anyone else even the reviewer was hearing from the Coda amp. As you see in my list, I have added the Pass labs XA 25 to my stable. It has given me the sound I was looking for and expected from the Coda but didn't get.