In USB, Firewire, and Ethernet there is no issue of clock jitter since there is no clock related to D/A conversion. Information is sent as a data. The issue is to keep just right amount of it. Too much will overflow receiver’s buffer while too little will cause gaps in music. For instance, in most common async USB implementation data is delivered about every 1ms (1kHz rate) in frames containing many samples. DAC places each frame into buffer signaling back under or overflow to which computer adjusts size of next frame. DAC feeds D/A converter with the data from the buffer at its own independent clock. Timing of this independent clock D/A conversion can only be affected by increased amount of electrical noise inside, that can possibly come from the outside injected by the cable. That’s why removing power lines from USB cable, better shields or galvanic isolation can help. Reclocker with async USB is just repeater with galvanic isolation (no need to reclock since 1ms clock jitter is not important).