I have a RSA Haley and I use a Black Sand Silver Reference Mk V that is an excellent match.
Before going with the Black Sand pc, I used a VH Audio Flavor 4 and AirSine.
I directly compared the Flavor 4 with the Mongoose and greatly preferred the Flavor 4. The Mongoose sounded slow and dull by comparison.
I highly recommend you check out the Black Sand cord before spending $600 or so on the Cardas cord.
George
Before going with the Black Sand pc, I used a VH Audio Flavor 4 and AirSine.
I directly compared the Flavor 4 with the Mongoose and greatly preferred the Flavor 4. The Mongoose sounded slow and dull by comparison.
I highly recommend you check out the Black Sand cord before spending $600 or so on the Cardas cord.
George