Ajm the M3 is $5,500.00 for a stock M3 no options
add $ 500.00 for headphone amp option
add $1,000.00 for network card option
add $ 500.00 for volume control remote and board upgrade
That totals $7,500.00 for a fully loaded unit comparable, if you subtracted the network card option as the T+A dac 8 doens't have that option you would be at $6,500.00 for a comparable feature set.
Hope that helps
Dave and Troy
Audio Doctor NJ Bricasti, and T+A dealers