74hc595 8bit dac

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due to the problems with finding free pins, would it be a good idea to maybe have the r2r dac as a shift register dac?

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I need to experiment more, but it does indeed seem possible to use a shift register and a r2r dac as a rudimentary i2s dac at low bitrates.

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the sound quality using a 595 shit register and resistors in a 8bit configuration, is about the same sound quality as the new R2R driver, very useful if you need to produce beeps and warning sounds. if you can find better resistors then my 1% tolerance then i am hopeful of better sound quality.