For me after run-in 8 wires BS performance even superior to 4 wires 1960s and 1950s with more clean, balanced, musical, 3d, texture, treble extension, layering, micro details and harmonics. Especially in bass performance
CCDD is more transparent, grand signature, better separations and overall extension.....BS8 is solid, thicker and texture sound with very very deep and layering bass (quality both are in the same level) the signature are different becoz of different structure. Both have crazy micro details with 3d spacing