Scott,

You know I have both, closed my eyes lay back and to me the T4 sound more like the Shadows a real more metalic sound, both very good. The T4 does have some outstanding samples that the Audya does not have perhaps this is money for investment and attention to detail.

Tony
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Tyros 4/Pair SR 350/ PC with a i8 intel chip, XENYX 802, Ford Focus 2 litre/Tascam DR07/Brother printer/Designjet 500/ our Doris/5 Grandchildren/ white boxers short Kymart shipped over and Typhoo Tea Earl Grey