I use two Maple blocks that the amps is on. I have two 80lb Marantz Mono amps & I have TOTAL CONFIDENCE in these beasts. The advantage in Maple is that it only gets "better" as it ages. I've had mine for well over 10 years but Interestingly enough -I just saw these on Music Express Online site i believe. You absolutely need something "rock-solid" for a besafy amp like these. Good luck.