Appreciate the replies guys. So it's a error in the manual after all?
If its in-fact a copy paste error, they only did so for the headphone THD section since if you compare the SNR Headphone specs between the PRO FS & PRO FS BE in the manual they don't match. Odd that they would modify the specs for some parameters but copy paste the THD section.
Eg.
Pro FS:
Signal to Noise ratio (SNR) @ +22 dBu: 117 dB RMS unweighted, 120 dBA
Signal to Noise ratio (SNR) @ +7 dBu: 114 dB RMS unweighted, 118 dBA
THD @ +18 dBu, 32 Ohm load, 1.2 Watt: -110 dB, 0.0003 %
THD+N @ + 18 dBu, 32 Ohm load: -107 dB, 0.00045 %
THD @ +14 dBu, 16 Ohm load, 0.94 Watt: -110 dB, 0.0003 %
Pro FS R:
Signal to Noise ratio (SNR) @ +22dBu: 120dB RMS unweighted, 123dBA
Signal to Noise ratio (SNR) @ +7dBu: 118dB RMS unweighted,121dBA
THD@ +18 dBu, 32 Ohm load, 1.2 Watt: -110dB, 0.0003%
THD+N@ + 18 dBu, 32 Ohm load: -107dB, 0.00045%
THD@ +14 dBu, 16 Ohm load, 0.94 Watt: -110dB, 0.0003%
I currently use a RME Raydat, ARC USB & a Ferrofish Pulse 16 for 16x AD/DA so I'm not lacking inputs (or outputs).
The plan is to compliment it with reference grade monitoring & high quality headphone amp instead of going with discrete components like passive volume control, separate headphone amp etc. I think it's a great solution.
The choice between PRO and DAC isn't as easy as it seems as I'm able to get the PRO FS R BE for approx. $390 US more. I'm using the Pulse to perform AD but there could be applications in the future where the AD of the PRO can be used to mix down off an analog console's master section as it's much higher spec'd than the AD of the Pulse unit. Having AES/EBU inputs on the Pro also work better with the Raydat but it's not a must. It's a bit overkill though to have 16 AD's from the Pulse to then get another 2 on the PRO, but for the price it's not bad to have.
I've used the non Black Edition ADI-2 Pro FS that ended up having shorted headphone outs and displaying a short error on the display. It also got extremely hot after an hour or two, so I'm a little concerned about the Pro's thermal design though I've read people that had this issue got replacement units that didn't fail afterwards.
I currently have both PRO FS R BE and DAC at the moment, just deciding which to open