Output Impedance Question

That low a load could cause various problems. What amplifier is this?
The DAC output impedance is also unusually high, is it a tube circuit?
This may not be a suitable match.
 
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Then it would depend on the DAC, whether it can drive 1k without distortion, and if it has
a large enough output coupling capacitor to not lose bass. It would need to have at least 10uF
to roll off at 20Hz into a 1k load, but preferably more than that. Which DAC is it?
 
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