This largely depends on your end goal. Do you eventually want a full-blown system of separates...even considering monoblock amps? Do you definitely want to try the LFT8s?
Your current AV receiver can probably manage with the low sensitivity of the LFT8s, but as with other planar speakers, they probably sound best with a high power amp. I like Yamaha products, but I'm not a huge fan of their AVRs. IME, their integrateds are in a whole other league when it comes to sound quality. While your AVR is not inexpensive, it still uses cheap, sheet stock heat sinks, a sure sign that they made sacrifices to the audio quality to make way for all the processing tech.
The Halo A21 is a good amp. It will certainly power the LFT8s without breaking a sweat, but will probably give your current setup a decent boost in performance. I think you'd be ok using the Yamaha as a preamp. No, it won't likely perform as well as a standalone $2K unit, but I believe the amp section is where most AVRs skimp. By going with a new amp, you might manage to bypass the weakest link in your current chain, while preparing your system for a future speaker upgrade.
As for the LFT8s, I haven't heard them, but I wouldn't be surprised if their performance far exceeds the Polks, even when driven by an AVR. Upgrading the speakers may yield the greatest short-term ROI, as long as you listen at moderate volumes.
Your current AV receiver can probably manage with the low sensitivity of the LFT8s, but as with other planar speakers, they probably sound best with a high power amp. I like Yamaha products, but I'm not a huge fan of their AVRs. IME, their integrateds are in a whole other league when it comes to sound quality. While your AVR is not inexpensive, it still uses cheap, sheet stock heat sinks, a sure sign that they made sacrifices to the audio quality to make way for all the processing tech.
The Halo A21 is a good amp. It will certainly power the LFT8s without breaking a sweat, but will probably give your current setup a decent boost in performance. I think you'd be ok using the Yamaha as a preamp. No, it won't likely perform as well as a standalone $2K unit, but I believe the amp section is where most AVRs skimp. By going with a new amp, you might manage to bypass the weakest link in your current chain, while preparing your system for a future speaker upgrade.
As for the LFT8s, I haven't heard them, but I wouldn't be surprised if their performance far exceeds the Polks, even when driven by an AVR. Upgrading the speakers may yield the greatest short-term ROI, as long as you listen at moderate volumes.
