Audiophilepure

https://www.soundstageultra.com/index.php/equipment-menu/1236-naim-audio-nap-350-mono-amplifier

The ATC SCM40 isn’t an especially difficult load to drive. Its impedance drops to just under 6 ohms, but it’s inefficient by modern standards, delivering just 84dB at 1W/m. As a result, it needs a lot of power to get it to move air—those drive units are very heavy. In truth, my NAP 250 delivers the bare minimum to get the job done: the significantly greater output from the pair of NAP 350s enabled continuous high output levels with ease. I never managed to drive the monoblocks into thermal shutdown, which occasionally happens with my NAP 250. The NAP 350s got pretty warm, but they were completely stable. Furthermore, the sonic character didn’t change with output level, lending the NAP 350 pair a sense of effortlessness that my NAP 250 simply lacked.

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