Topic: ADI-2 DAC XLR output stage - discrete? class A?
Is the XLR output stage of the ADI-2 discrete or op amp? Does it operate in class A? Thank you.
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RME User Forum → ADI-2 & 2/4 Pro series, ADI-2 DAC series → ADI-2 DAC XLR output stage - discrete? class A?
Is the XLR output stage of the ADI-2 discrete or op amp? Does it operate in class A? Thank you.
Does it matter, and why so? Thank you.
The question pertains to the quality of the analog output on the XLR terminals. I've seen contradictory claims about this online but no mention of it in the user manual or product specs. When an output stage is biased to operate in class A and/or implemented in discrete components, that's usually something that the vendor does report. - cheers, Tom
Tom,
Perhaps you could share an Overview outlining the advantages of a discrete Amplifier Stage? Hmmmm.
Curt
I suggest you ask that of vendors who do so. I'm simply trying to resolve conflicting claims that I see online about the ADI-2 DAC.
The output is comprised of OPA1602 opamps. Those have a quiescent current of 2.6mA, so their output stage runs at 0.5mA or thereabouts (educated guess here). This means the output stage is operating in class A for up to about 5V peak into a 10k load. Thus, in a normal consumer connection scenario (<=2Vrms levels required, >=10kOhm input input impedance), the output will remain class A at all times.
thanks great, thanks KSTR!
RME User Forum → ADI-2 & 2/4 Pro series, ADI-2 DAC series → ADI-2 DAC XLR output stage - discrete? class A?
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