Thaks anybody. Well amp should be OK. I use Goldmund pre+power amp. It is a transparent sound without harsh. A sort of Spectral type, very quick ample bandwith but compared to spectral a bit more tube imprinting.
Tks for further comments
Maybe I will get the M20 as difficult to hear here the merlins
Tks for further comments
Maybe I will get the M20 as difficult to hear here the merlins