I have not heard Graham with TW Raven AC-1 but heard Raven 10.5 and went with Reed 3Q 12 inch instead. Both are excellent, Raven may be a bit more neutral, a bit less personality, does not seem to add and subtract anything much. However it does not match well with my Koetsu at all and in fact TW Acoustic seems to rather dislike Koetsu and discourage me from using Koetsu from email I received.
With Koetsu's spec, I guess medium mass arm is not going work very well anyhow. So I went with Reed arm with Cocobolo arm which works well with both of my cartridge, Air Tight and Koetsu. In comparison, the sound is a bit warmer, rounder, a touch smoother than Raven 10.5
With Koetsu's spec, I guess medium mass arm is not going work very well anyhow. So I went with Reed arm with Cocobolo arm which works well with both of my cartridge, Air Tight and Koetsu. In comparison, the sound is a bit warmer, rounder, a touch smoother than Raven 10.5