The MDR-MA900's the current the top model in the latest open-back line-up from Sony. While  the latest  generaraion is definitely not the greatest with a distinctly less "hi-tec" vibe then the previous SAx000 models (as perhaps can inferred from the one-digit-less suffix and the of course a much lower MSRP pricing) the MA900s, in particular as a TOTL model,  comes with an altogether different concept- that of the "Full-Open-Air" design, Originally pioneered in the '90's with the MDR-F1 (by one of the principle desingers responsible for the legendary...