I suggest this one: https://www.aliexpress.com/item/1005005516171071.html I own 2 units and use them daily without issues.

Yes, you can use it to power small active monitors (loudspeakers). Try Kali Audio LP6 v2 for 400 usd a pair. https://www.erinsaudiocorner.com/loudspeakers/kali_lp-6v2/

@jmimac351 let's see how RME themselves measure and advertise improvements with their upcoming DPS-2 linear power supply. https://forum.rme-audio.de/viewtopic.php?id=36900 And also a DC filter. "LNI-2 DC is an active DC filter that can be placed between audio equipment and power supply to...

Power supply 12V DC, 1.0 A or up

I am using medium size silicone tips as I am not a fan of foam tips and both dual flange tips did not seal right for me, and uncomfortable too. Driving the IEMs with the amazing Tanchjim Space and a 4.4 mm balanced cable too. BTW within this price range a multi connector cable should be...

How about 3.4 Watt balanced into 32 Ohm of the RME ADI-2/4 Pro SE (2500 usd)? https://www.rme-audio.de/adi-2-4-pro-se.html

About opamps no idea, but volume memory I suppose is a volume setting that is kept between uses. Some dongles have independent volume control but once you disconnect and connect again, it loses the last volume and starts from a factory-defined setting.

Colorfly CDA-M1P is looking good with AKM chip for 80 USD. https://shenzhenaudio.com/collections/new-arrivals/products/colorfly-cda-m1p-ak4493seq-portable-usb-dac-amp

It is very possible, and actually IMO it is a 80/20 rule: with 2 bands you knock down the 2 main room modes, and use the other for fine tuning.

I own one it is good, hard to find good dongles with mic support.

Moondrop Dawn Pro for 50 usd is really hard to beat right now imo.

It's brilliant indeed. A home run for RME.

For low power and sensitive IEMs the most important spec it very low noise floor, SNR and DR. But even with lots of unnecessary power, 4.4 mm balanced outputs usually have lower crosstalk too so that is a bonus.

Brilliant, just did the same here. Thanks a lot!

Now on sale for 40 usd, insane... https://www.aliexpress.com/item/1005005948845170.html