I have both the current Sky Blue and the Vermillion versions of the Urushi line. The Vermillion has a lower output and thus fewer turns on the coils. In theory this lower output & less mass should result in better sound. I cannot hear any difference.
As to the wire used in the two cartridges: It is exactly the same. I know the advertising copy states that the coil wire is different, but in reality it is the same.
Just go with your favorite color preference or best buy. I think the Blue (really turquoise) is pretty cool. I had Bob Sattin of Bob's Devices build a custom SUT using Sowther OCC transformers in a blue color to match that Koetsu. There is a picture of that SUT on his web site.
There is a photo on my Koetsu Blue in action on the ttWeights Customer Photo page.
The sound from both is pure Koetsu magic & romance.
At this writing am using the Cardas/Benz Silver Myrtle Heart for a more "clinical" sound, but switch to the Koetsu's often.
As to the wire used in the two cartridges: It is exactly the same. I know the advertising copy states that the coil wire is different, but in reality it is the same.
Just go with your favorite color preference or best buy. I think the Blue (really turquoise) is pretty cool. I had Bob Sattin of Bob's Devices build a custom SUT using Sowther OCC transformers in a blue color to match that Koetsu. There is a picture of that SUT on his web site.
There is a photo on my Koetsu Blue in action on the ttWeights Customer Photo page.
The sound from both is pure Koetsu magic & romance.
At this writing am using the Cardas/Benz Silver Myrtle Heart for a more "clinical" sound, but switch to the Koetsu's often.