You forgot the RME ADI-2 Pro FS R BE. (Not a joke, BTW.)
That's where i got mine. There is a way to get discount ontop of that.
I'm not sure there is a benefit of using the +13dBu range
Here is 800mV input, measured with ADI-Pro fs R (Black) and ADI-Pro fs (Red) ADC, using range +4dBu
(+4dBu-3.7dB = 0.3dBu = -1.9dBV=0.8V) for different scenario
DAC is the ADI-Pro fs R for all. (So when comparing black and red, we are comparing ADCs)
First straight from the DAC, +4dBu output range, with some digital attenuation (RME ADI-2 Pro fs R - new version)
View attachment 67722
Then with DAC set for +13dBu output range, with passive attenuation
View attachment 67723
Finally, with DAC set to +4dBu output range, full output, with a light passive attenuation
View attachment 67724
That illustrates several things, I think
1. ADC is working (slightly) better on "Pro fs R" version than on "Pro fs Non R" version
(That was actually why I was measuring this to begin with)
2. Using +13dBu to generate a signal close to 0dBu is less efficient than using the +4dBu range.
I guess this is true for the ADI-2 "Non Pro" fs too...
Notes:
1. I never "calibrate" the output.
So when you see in the signal generator "Output amplitude" = 1V, that means 0dBFS for the DAC, which is the full range (+4dBu or +13dBu in those examples).
2. Those measurements are all loopback, which accumulates noise and distortions from the DAC and the ADC (and from the passive attenuators where it's used). So 114.5dB SINAD here, while attenuated by 3 7dB, means that both DAC and ADC have SINAD better than that. How much better we can't tell.
That's exactly what RME did with new generation of tge ADI-2 DAC and with the Pro fs R.
That's new design, though.
I don't know if they have a newer version of the ADI-2 fs (non Pro)
There is also the ADI-2 Pro Anniversary Edition with a window.
I don't know for the DAC, but here are some plots for the RME ADI-2 Pro fs vs RME ADI-2 Pro fs RDoes anyone have an idea why the new version has a higher noisefloor on the highs compared to the old version?
Looks like it traded low frequency noise floor to high frequency noise floor.
For all outputs.Does the parametric EQ work only for headphones or with any of the outputs?
Of course. The EQ is different for HF and speakers anyway. And you can save many for each.Also, can you save EQ settings (e.g. one for headphones, on for speakers), assuming the answer to the question above that it works for all outputs.
For all outputs.
Of course. The EQ is different for HF and speakers anyway. And you can save many for each.
Not exactly. The noise floor is lower on V2, for both low and high frequencies. What is higher however is Distortion, especially at 10-20Khz. Don't have a clue why.Looks like it traded low frequency noise floor to high frequency noise floor.
v1
v2
Hi @amirmYou are welcome. I have the one with ADC as well to test.
By definition balanced is differential as far as I know, and the XLR outputs are balanced/differential.Does anyone know if the XLR outputs on the ADI-2 FS Version 2 are differential? Thanks!
Does anyone know if the XLR outputs on the ADI-2 FS Version 2 are differential? Thanks!
If I may suggest, this 2nd graph is very revealing and promotes your AutoRef technology very very well, so that it should be included in the manual section 31.14 to complement the digital volume control argument.Amir's measurement of the improved SINAD at higher levels than 4 Volt output inspired me to show the superiority of the ADI-2 DAC's multiple hardware reference levels, that anyone can use without having to think about it by using the default AutoRef setting. What happens is that when you lower the volume every 6 dB (4 x ) the discrete hardware lowers its amplification and the DAC's digital level is ramped up again. So lowering the volume will not make you loose all the THD+N, or SINAD.
View attachment 63801
First I replicated Amir's measurement (pretty much identical), then added the SINAD states that occur when the hardware level is changed. That didn't fit completely into the measurement, and also requires a logarithmic scale on the x axis for the lower levels. Then I set the reference to +19 dBu and schwuppdiwupp had the SINAD that one gets when changing the volume at the unit. Finally I added the ref levels in balanced and unbalanced mode on top as text. I hope this is understandable. Also please don't get confused: this is about manually setting volume digitally at the unit, not about a swept generator with automatic output level action - that would make no sense.
View attachment 63806
So what it shows is that when you use a standard DAC and only look at the SINAD at 0 dBFS you miss it all. How often do you use 0 dB volume? Most of the time people lower the volume, definitely so when using phones. You can take the best DAC ever measured at ASR- it has no chance against the ADI-2 DAC at a real-world volume setting of (for example) -20 dB.
I do, for measurements.Anyone using balanced with the pro version?
What do you use for the adapter to connect the 2 headphone outs?I do, for measurements.
As said, it's for measurements.What do you use for the adapter to connect the 2 headphone outs?