Moving Coil Cartridge (Rosewood)
The Rosewood Standard and Signature are very similar in construction.
Electrically, the Signature offers a more closely matched core and coil set.
Cosmetically, the Standard is distinguished by a sloped base when viewed lengthwise while the Rosewood Signature is rectangular-shaped like the other Koetsu cartridges.
The Rosewood Standard/Signature is also sometimes referred to as the Red/Red Signature.