Mitch,
Modwright puts an excellent tube output stage on the DAC.....so yes, the DAC is improved with his mod. I also mod the 105 and also change the clock to the DAC and modify the power supply to the DAC as well as a host of other things. So, a modified 105 has a mucho better DAC. A Lampizator or other expensive DAC might sound better than my modified 105 (using simple zero feeback j-fet buffer for output stage)...but have not compared it to other such options. I would think several $1500+ DACs (Eastern Electric with Dexa op amps, Exasound, Mytek, etc.) would beat the stock 105 DAC/output stage.....but my modified DAC/output stage is way, way better than stock. None of the above mentioned DACs has as pure an output stage as mine. They all use the same DAC chip, as well.
Modwright puts an excellent tube output stage on the DAC.....so yes, the DAC is improved with his mod. I also mod the 105 and also change the clock to the DAC and modify the power supply to the DAC as well as a host of other things. So, a modified 105 has a mucho better DAC. A Lampizator or other expensive DAC might sound better than my modified 105 (using simple zero feeback j-fet buffer for output stage)...but have not compared it to other such options. I would think several $1500+ DACs (Eastern Electric with Dexa op amps, Exasound, Mytek, etc.) would beat the stock 105 DAC/output stage.....but my modified DAC/output stage is way, way better than stock. None of the above mentioned DACs has as pure an output stage as mine. They all use the same DAC chip, as well.