Audiophilepure

https://www.stereophile.com/content/nad-masters-series-m10-streaming-integrated-amplifier

“Before installing the M10 in my system, I had been listening to my resident pair of KEF LS50s driven first by a pair of Lamm M1.2 Reference monoblocks, then by the Vandersteen M5-HPA monoblocks I had used with the Vandersteen Quatro Wood CT loudspeakers that I reviewed in the November 2019 issue. The latter had their high-pass frequency set to 20Hz so they would, in effect, be driving the KEFs virtually full-range. As you might expect, these very much more expensive amplifiers—the Lamms cost $32,490/pair, the Vandersteens $15,800/pair—set a high bar for the M10. Both made the KEFs sound considerably larger, more authoritative than you might expect from what are relatively small speakers. In particular, the Vandersteen M5-HPAs proved a particularly synergistic if unlikely match. I further explore the performance of this amplifier in my review of the Q Acoustics Concept 300 elsewhere in this issue.”