OK, you prefer Sigma top and bottom end to Valhalla. How about ambient retrieval and clarity?I did as that was what I was using. Simply put there really is no comparison. I found the top end on the Sigma to be more extended and the bottom end far more articulate and so much better than the Valhalla. I sold my Valhalla PC's 3 months ago
I'm very happy with Valhalla PC on my pre and trying to decide adding one for the DAC or buy 2 Sigma analogs (1 for pre and other for DAC). I'm afraid of losing Valhalla positive attributes by moving to Sigma.