SP10mk2: OMA Graphite plinth vs.Dobbins plinth

@ferrari275 you said you tried the slim CU-180 (1.8kg), but try the thick CU-500 (2.7kg) if you want to compete with the AF (3.6kg). Or simply add SAEC SS-300 in this competition. Micro Seiki made comparison chart with various mats of that era, the closest to CU-500 (according to their measurements) is the SAEC SS-300. This is very interesting, because the SAEC is a speciall alloy of only 870g in total. 

This is very interesting, because the SAEC is a speciall alloy of only 870g in total.

.......mmmmhhh    perhaps the heavy weight does not mean everything.

chakster, the only other mat on my radar would be a stainless steel type.  Weight is a factor not to be dismissed but imho, it's not everything.  The Cu-500 is still Gunmetal.  During listening, I quickly ascertained my AF pure Copper platter mat was heads above the MS Cu-180 Gunmetal Copper alloy, so I had no real motivation to seek out their other mat but perhaps I will buy one to try anyway per your recommendation.  To clarify, does anyone know if the SAEC SS-300 compromised of any stainless steel at all?  At only 870 g it must be a type of lightweight aluminum alloy, no?  I presume by comparison measurements provided at the time by Micro they were referring to weight, density and resonant frequency...ect.  I had the hardened aluminum alloy Oyaide MJ-12 years ago and as I recall it was thin anemic sounding, not at all musical so I sold it. 

.......mmmmhhh   perhaps the heavy weight does not mean everything.

@best-groove My good sir, welcome to the eccentric world of high end audio, nothing means everything! :)
 

@ ferrari275 

What does the pure copper mats do sonically that are heads and shoulders above the gunmetal copper alloy's like the cu-180?   in your opinion.

LOL.......it's nice to read about mat when the title of the 3ad asks for plinth he he he.