Yammie NS 50M - Specs? Any good? Value?

[plresults]

Hi: I have access to a pair of them for $400. Where to they stand in the product range? Anyone listening to them now? Where can I get specs? Thanks!

 

[Nashou66]

Do you mean HS 50M?

Nashou

 

[OMGCat!]

500M?