Most older DAC's are a poor value as the technology has advanced so much. For instance, 8 years ago well respected DAC's could only do Redbook. A $1500 DAC from then can be exceeded sonically by a $300 DAC today, plus today's $300 DACs can handle high resolution PCM and DSD/DXD. Another example: iFi micro iDSD Black is a $500 very high sound quality yet tiny $550 USD DAC/preamp/headphone amp, DSD to 512, PCM to 768, DXD to 768, analog and coax/optical/USB digital inputs.
