What makes a DAC so expensive?

To me, in order to get guitars that sound like guitars then the DAC does not add or change anything when it reconstructs the waveform. DACs that are capable of doing this can be bought for a few hundred dollars. Some like DACs that deviate from this by playing with filters or adding and changing things that do not adhere to the sampling theorem and that's fine but don't claim they are transparent DACs or better because they can create a "sound". 

To me, in order to get guitars that sound like guitars then the DAC does not add or change anything when it reconstructs the waveform. DACs that are capable of doing this can be bought for a few hundred dollars. Some like DACs that deviate from this by playing with filters or adding and changing things that do not adhere to the sampling theorem and that's fine but don't claim they are transparent DACs or better because they can create a "sound.                                                                    

All dacs use filters of some sort, so your $200 dac has a filter. What your $200 dac doesn't have is a good power supply or a very good output stage. Most cheap dacs use an opamp output stage, which in my opinion compresses the sound.

If the $200 DACs filter doesn't alter reconstruction of the waveform or cause a deviation from the sampling  theorem so that the measurements on the analog outputs are so low in distortion and noise it's not audible to humans then the DAC is doing its job properly and it's not relevant how the output stage is constructed since it's not doing anything humans could hear.

There are basically two types of DACs those that adhere to the sampling theorem and properly reconstruct the waveform. Which means the waveform going out of the DAC has been reconstructed to match the waveform that went into the ADC. The other type of DAC doesn't adhere to this basic principle and goes off creating a sound either through filters that maneuver the waveform or just out right changing it on purpose. Now one may prefer a DAC that has a sound signature but it is not a transparent DAC that is reproducing the file accurately.

I see some good points on this thread. People actually understanding manufacturing costs, engineering, etc, and seem to relaize the last extra costs exponentially more. Then I see djones as usual poo pooing anything that costs because he can’t afford it. I can’t afford a dcs stack at new cost, and also keep everything else I have. I could,  it that stack wouldn’t be much use without amps, speakers, etc etc, lol. Dosnt mean I wouldn’t like to have one if I could.