Are KEF LS50 Meta speakers power hungry and inefficient ?

[DB1989]

Yes I had tried a fellow member's rega elexr amp with my nht speakers and that amp really had lovely dynamics. He is using it as a pre.

V3 mono vs ZA3 is what gets me thinking. ZA3 has a tad bit of flexibility in my opinion, start as a stereo amp and scale up to mono if it sounds good. Maybe even do some opamp swaps.

The ZA3 in monoblock config sound great. Exceptionally wide soundstage with stellar dynamics and a vivid sound. To channel match however, you have to turn both volume knobs to max as there is no fixed gain.

 

[sandeepmohan]

LS50 Meta is really a very popular speaker. Seems to be slightly on the inefficient side of the scale.

More than type or class of amplifier, you need one that can dip easily into the sub 3.5ohm impedance range. Not many can do that. Its also 85db so will need a solid current to wake it up. 50 watt Class AB is fine. I think the best path to a good sounding loudspeaker. The power needs to be clean and stable is all.