The 300 Series came out AFTER the 500 Series?
No way.
Look at the features, build quality, Tascam logo, and the Knobs they use.
The 500 Series is very similar to the M-600 Console which was mid-late 80's.
I thought the 300 series mixers went with the 32, 34, and 38 Recorders(Early 80's)
And the...