My 16 year old NAP500 is (past) due for an overhaul. It still sounds very good but the DR upgrade pushed me to pull the trigger. The cost is a good value in my opinion. It will be gone for about 5 weeks, I'll be using a Supernait 2 during the interim. My 552 (which I bought in 2003) will go in next for the DR upgrade. I am asking Chris West will provide me with progress photos which I will share here. Looking forward to hearing the improvement I've been reading about here on the forum.
There's a hole in my heart: