Aneep - Sounds like you have Audio-gd made I2S pin compatible for OR5 but have not actually connected them.  I think that pin compatibility is one thing but how well the I2S transmission would work between the two is another.  Because the signal level is only 3.3V CMOS TTL, the impedance...

I am new here.  I'd like to order a Master 7 DAC with I2S input only.  I want to use my Off-Ramp 5 to drive I2S to the Master 7 DAC.  Has any one here used Off-Ramp 5 I2S to drive Master 7 DAC successfully?   Thanks.