No problems at all, Martin - tight, tuneful and extended; really just what's on the recording, which is all one can ask of a tonearm cable (or any cable, for that matter).

However, it's the sheer amounts of detail it pulls out of the mix, which I find astonishing (in comparison with any other tonearm cable I've used), but with a complete lack of grain or 'edge'!

It'll be very interesting to see if the SPD-4 can improve upon those traits and/or add any enviable ones of its own.

Btw, what are you doing about those heavy metal plugs on the TQ cables, connecting your SUT to your phono stage? I'm convinced that you're only hearing about 85% of what the cable is capable of. Fitting WBT 0110Ag or Eichmann silver Bullet RCAs, would sort that out

Marco.