I'm testing SD MIDI][+ final board.
In this time, I applied DC filter and OPAMP buffer for clean sound.
Now it works very good.
I'm testing other functions and will start to sell for local fans.
I've recorded two songs. Please listen it :)
And, This song recorded from PC MIDI to APPLE IIe & SD MIDI][+ card.
You can remember this song if you were really game mania in 386 era.. :D
Thank you very much.