New streamer or dac?

@pwayland If you are using a PSA DS DAC with built in streaming card you have already done away with the I2s unless you want to connect a CDT by I2s.

There is an advantage to having a streaming card in a DAC, Mola Mola and DCS do this also but I seriously don't believe this setup could compare to a full blown streamer with or without separate DAC.

The jury is out on eliminating "old tech" such as AES/EBU which GENERALLY gives better sound even over I2s and mostly over USB depending on your setup.

The PSA DS upsamples everything to DSD, it's not a bad idea but you can't select individual frequency settings.

@bikeboy52  looks like your cooking up the goods analog source. Sweet man! I'm a pure digital source guy who digs deep into analog Class A amplification and exact phase and time coherent speakers. The goods are DAC streamer to you preamp, unless your streamer can send I2S protocol to your DAC. Any other interface to the DAC will struggle to provide bit perfect input.

Thanks Pwayland ,so I’ll pick up a decent affordable Dac first then phase two the streamer.This would seem to be in your wheelhouse,whatta see as my unit staying in line with my existing system? 

Does seem like theres a distinct advantage to buying a single box unit though if it eliminates the interface problem. Is that not so?

@pwayland Any other interface to the DAC will struggle to provide bit perfect input.

I think I know what you mean but the normal way to use "bit perfect" just means that all bits are transferred and all digital interfaces manages that. I2S might be better with timing issues.