Quite exited now the 8 channel DAC is soldered up on a 48pin proto board.
was scepticle that I could solder 0.5mm pitch but seamed to go fine ! we will see.
I'm using 2 low noise Liner Technology LT1763 DC - DC ldo's for the 5volt and the 2.5 digital voltage supply. the I2S interface will run on the arduino's 3.3v and the I2C interface will run on the arduino 5v supply making the codec 5v arduino interface freinedly.
I just have to program the ardiuino to send the usbMidi data over i2c ro control each volume register :)
If this works I'm going to bring on the 8 channel ADC !!!
Interestingly I found one that I can just hook up with TDM , 8 channels of audio down 1 wire?? sounds amazing if it works !! kind of inter Codec IC 8 channel interface , wow, did'nt know it about that, thought I was going to have to hooke up 4 stereo I2S connects.
more news soon !