Musical Surroundings

The MYDAC II is the first digital-to-analog converter using MODR (Musically Optimized Digital Reconstruction). Designer Michael Yee’s digital reconstruction technology is software driven, executed with an FPGA (field programmable gate array), which effectively minimizes jitter and intercepts the digital signal as it comes into the DAC. Furthermore, the FPGA provides a proprietary pre-emphasis conditioning of the signal before the DAC chip (the DAC chipset is the Texas Instruments PCM1798, delta sigma) to remove the DAC’s effect on quantization error. After the DAC chip, an analog stage provides de-emphasis prior to output. MODR was developed to significantly improve the low-level resolution. Basically, it is a reconstruction technique that alters only the sub-quantization changes in the signal. MODR is highly optimized for musical signals.