Why do most DACs come with RCA jacks they are inferior

[Speedskater]

14 hours ago, One and a half said:

The cost of the balance out varies by design, sometimes the output is a resistor, sometimes lengthy true balanced setup which isn’t cheap.

The THAT Corp. input and output chips (which are the best available) cost less than $5 US each in lots of one.

 

A resistor/capacitor output or aka passive/impedance output is a true balanced output.

[Speedskater]

13 hours ago, Bones13 said:

I’m sure there are “pro” level DAC, and ADC, units that use the XLR connections. True balanced circuitry involves double the electronics (there are DAC paths for both the positive and negative currents).

A XLR balanced interconnect system is one thing and a hi-fi component with completely balanced internal circuitry is a very different thing.

[Speedskater]

5 hours ago, mansr said:

Yes, but that only matters if external noise is a problem to begin with. That isn't always the case.

True, but like we tell the grand-kids to buckle their seatbelts. It's easier to do before the problem arises.

 

Very now item that comes into your house has the potental to add noise/interference to your hi-fi system.

[Speedskater]

47 minutes ago, mansr said:

The OP didn't articulate why he desires balanced outputs. Perhaps he doesn't actually need them and would be better served with a quality single-ended design.

Actually he did. He wants to was balanced interconnects to his power amplifier.

Only way he would be better served is if his only inputs were RCA.

[Speedskater]

1 hour ago, mansr said:

A single-ended design is easier to get right, within its constraints,

Many, many audio products get RCA interconnect systems wrong.

It doesn't take a pro quality design balanced interconnect system to beat those RCA systems.

It only takes a few added resistors and capacitors to make a usable balanced interconnect system.