USB reclocker vs DDC?

Most DDCs include a reclocker, but many DDCs include a USB input, but not a USB output. They will connect to the DAC using SPDIF, AES3, Toslink or I2S. A USB reclocker, on the other hand, generally has just USB in and out. 

Thanks.

I think you’re potentially getting more benefit out of a DDC especially if it allows you to take advantage if your DAC’s i2S or AES/EBU input that often provide significant sonic advantages. Especially if the DDC also re-clocks the data and using the i2S connection I’d think the clock becomes less of an issue, but I could be wrong on that. I bought a used Denafrips Iris DDC and was pretty shocked at the improvement I got switching from the SPDIF to i2S input on my DAC.  Just my $0.02 FWIW.

Thank you, soix.

To what DAC is the Iris attached?