I think the LRS+ needs power. I have a modded Peachtree GAN1, Peachtree GAN400, and a CODA #16 that I used on the LRS+.
The 200-watt modded GAN1, while maybe the best sounding, is weaker on the bass with the LRS+.
The Peachtree GAN400 is what i plan on using long-term since I want to keep the costs down on this system. It is pretty good.
The CODA #16 is incredible on the LRS+ though it is even better on my Yamaha NS5000 so that is where it resides.
My experience with these amps made me decide NOT to buy the Benchmark AHB2 (100 watts @ 8Ohm) for the LRS+. It would have been underpowered. The AHB2 monos likely are not as good as a single stereo AHB2 on the LRS+ due to under 4 Ohm load.
The other amps I considered for the LRS+ were substantially more than 100 watts and over 300 watts at 4 Ohm.
- SPL s1200
- a used KRELL Duo 300XD (would be as good as the CODA #16)
- Parasound JC5
- Bryston 4BSST3
All these amps could be better than the Peachtree GAN400, the KRELL substantially better to my ears, but the GAN400 has the right amount of power for the LRS+ and the right price.