I started off with 2M Blacks on my P9 and P3, coupled with Graham Slee preamps, so I can't comment on how much an upgrade they are, but they sound fantastic. I bought a spare and put it on my Planar 2! This was when the dollar was high - if you want one now I'd check out Aussie suppliers, as overseas prices are crazy now due to the weak dollar.
Currently Active Ads
Total Sales (Since 2018)
Total Sales Value (Last 14 Days)
Total Ads Value (Since March 2020)