[KLH MODEL 6s paired with a new receiver?]

THANKS VERY MUCH for all input. So far, so good with my sixes paired with a new YAMAHA R-N803. Sometimes I think they sound a little "thin" but a few minutes later they sound so full...must be my ears. And the "soundstage" on the sixes is very impressive. 

[KLH MODEL 6s paired with a new receiver?]

I got the idea from this and other audiophile forums.

 

[KLH MODEL 6s paired with a new receiver?]

Thanks for the input. BTWforgot to mention: serial numbers on the 6s are: 28068 and 30510. Any idea what era these were built?

[KLH MODEL 6s paired with a new receiver?]

Greetings...Does anyone have experience on pairing  KLH MODEL 6s with a newer receiver. I am currently driving them with an ONKYO TX830 (1989) and I've heard the MODEL 6s could sound better depending on receiver. I think they sound pretty good now but I'm curious. I also have an older KENWOOD KR4070 (1978). But I think both my receivers are limited in their specs. The ONKYO is "supposed" to be 58 Watts and the KENWOOD is 40 Watts. I'm looking at a new YAMAHA R-N803 or R-N602 (100 watt and 80 watt)  I've read Yamaha and Marantz receivers are still high quality so I wonder if they would make the KLHs sound any better.  Any guidance would be greatly appreciated. I KNOW I'm probably supposed to power them with a tube amp or restored vintage receiver but not sure I want to go that route so just looking for alternative. THANKS