My bad,i had a 2215BL in my basement not the 2230. Sounds great so far. There's not much to find about the "BL" variant and i wonder what's the difference to the Standard 2215(B).
The volume poti has problems and causes inbalance. There is no background hiss even with sensitive cans.
I may go crazy but i prefer the Output of the Marantz to the vali (which is on sale).