I'm planning to do some audio DSP soon but I would like to know if I can connect an ADC directly to a DAC without a processor in the chain. My main reason is to test preamp circuitry. I would like the ADC and DAC to be 24-bit at 48 kHz, and I have many options ADC and DAC-wise. I would also like to use I2S for communication so when I add a DSP, it will work seamlessly.
Is it as simple as connecting the clock and data lines?