IF you want Transparency the Atma-Sphere OTL has to be the first choice Coupled with the Classic Audio Loudspeakers T3.4 Project or the T1.5 Reference. This setup will challenge ANY World Class Systems REGARLESS of COST!!!
This is coming from a Guy who had them all, The OTL Amps are Superior in nearly all facets of sound except one! you are not going to able to mate them with hard to drive Speakers unless you buy the larger OTL Amps such as the MA-1 or MA-2 from Atma-Sphere.