KaiS wrote:So it’s clear we’re analyzing a useless configuration:
Power amp switched on, but no active source connected, no music playing.
I appreciate your help and feedback.
Just so it's clear to others reading this topic, my issue exists when the RME ADI 2 DAC FS is in the system. My hum issue does NOT exist when my Ayre KX-5 Twenty preamp is in the system, and in the exact same configuration.
The common denominator here is which preamp is in the system.
Use Case:
How is this a "useless configuration" if I want to keep my Ayre VX-5 Twenty amp on all the time, at operating temp / limit current swings and heat cycling of its internals AND use a battery pack with the RME ADI-2 DAC FS? If I'm using a battery pack with the RME, it certainly cannot be "active all the time", correct? Why should I have to turn off my other equipment to avoid the HUM that is evidently being injected into the system via the RME? My other preamp does not inject this hum, when in the exact same configuration. As I am looking into a 3S2P battery pack that Matthias has mentioned elsewhere, this is relevant - and perhaps a nice solution "for me and MY configuration". My configuration, if reasonable, is the only configuration that matters.
Of course, this begs the question... why do I need to lookup using a battery pack with the RME ADI 2 DC FS when my Ayre KX-5 Twenty is DEAD QUIET, always?
Why does the RME ADI-2 DAC FS generate this hum, whereas my Ayre Acoustics KX-5 Twenty preamp, if "OFF" and plugged in via XLR, does not? The configuration is exactly the same.
Obviously, this product is aimed at a little different niche / customer, correct? It would be unwise for any manufacturer to dismiss a customer's needs as "pointless"... the User Experience matters. Perhaps this sort of dismissal is why the RME Remote app can only be (inconveniently) used via USB, rather than incorporating a bluetooth interface for it (as it should be setup - like SVS Sound does with their subwoofer app, which I use and is so outstanding that it makes me not want to consider any other Subwoofers), and getting in the way of my experience with the unit? But, I digress...
I'll also point out... when some issues are brought up, it seems a common reply is "That is useless to even discuss..." and to be critical of the scenario rather than the issue / result at hand. I would politely suggest a better way to support the User Experience (Customer) is to design equipment is such a way that it avoids issues, whether they are uncommon, or not. If the equipment doesn't address the issue, dismissing it as a "useless configuration" is perhaps not the best thing to do. Perhaps the thing to do is address the issue for when Customers do "pointless things"? I have other equipment that can account for my "useless configuration", why can't the RME ADI 2 DAC FS?
I would politely suggest these things ARE useful to discuss, most especially if it highlights an issue the RME ADI 2 DAC FS cannot cope with - whether because of its basic design or any other reason. At a minimum, other users can perhaps learn from it in case they happen to encounter it.
Notwithstanding any of this, I think it is notable another piece of equipment put in the same same spot / configuration CAN cope with this scenario and NOT send HUM thru my speakers, whereas the RME ADI-2 DAC FS cannot. As I have already said, I like the ADI-2 DAC FS, and it isn't going anywhere. I certainly appreciate the knowledge base available here and I think the more we talk about / understand these issues, the better.
The explanation for "why" this happens with the RME ADI-2 DAC FS may be apparent to some, the configuration may be "uncommon"... but it's not "pointless". The better User Experience would be that it doesn't happen at all because the piece of equipment is designed to overcome the uncommon - even if some think it useless.
Thank you for your feedback. It is much appreciated.