Beautiful preamp, I have had one for many years. Its strong points are transparency and speed. Over the years I have tried various power amplifiers coupled with this wonderful Preamplifier, Plinius, kr, allnic, Ear, Griphon and Mbl and it has never disappointed me. If you really want to find a flaw, .. at low volume it does not express itself at its best. Be careful when pairing it with power cables. I found the squaring of the circle with the White Gold infinito 2 power cables (the same manufacturer as the Sigma Acoustics speakers), this cable balanced its dry character a bit, giving it a bit of warmth in the mid-low range. Over the years I have been able to compare it with other products, eventually replacing it with an AllniC L 10,000 Signature, the last comparison before replacing it I did with an MB L 6010 D but in terms of transparency there was no comparison. Another of the main characteristics is the ability to reproduce a large soundstage and excellent three-dimensionality.