Found this
Audio DAC sample rate fixed 44.1KHz (Not sure what this means)
DAC typical S/N ratio 110dBA (this is the output on the Dac is this the also the output from the RCA connectors)
DAC typical output noise 3uV
DAC typical THD + N 1Khz, 0dB -70dBA
DAC typical dynamic range 1Khz (-60dB) 102dBA
DAC max crosstalk 10Khz -69dB
Aux input frequency response 20Hz to 18KHz
Aux input typical channel seperation 50dB
(I saw the Frequency responce from the aux input but didn't see one on the Empeg it self
Anyone that can fill in the blanks