not at all surprising to hear differences with digital cables
- USB can carry noise into the DAC and often needs galvanic isolation (with exceptions for well designed newer DACs like Benchmark)
- the switching mode power supplies in most wall warts can also put noise onto the power cord which again can reach the DAC, so use an LPS, a star-quad cable design or a choke
speaker cables can affect speakers with cones which represent complex loads
if you hear a difference with an AC power cord then you should have used an isolation transformer instead of spend big $$ on a lessor 'fix' (or balanced power supply, but they are pretty spendy)
if you hear a difference with interconnects, they you should be using a balanced design
- USB can carry noise into the DAC and often needs galvanic isolation (with exceptions for well designed newer DACs like Benchmark)
- the switching mode power supplies in most wall warts can also put noise onto the power cord which again can reach the DAC, so use an LPS, a star-quad cable design or a choke
speaker cables can affect speakers with cones which represent complex loads
if you hear a difference with an AC power cord then you should have used an isolation transformer instead of spend big $$ on a lessor 'fix' (or balanced power supply, but they are pretty spendy)
if you hear a difference with interconnects, they you should be using a balanced design