I am currently checking the final sample. It's much delayed, unfortunately, but has become even better with specs and extra features.

I am picking up my ADI-2/4 Pro SE tomorrow, and I am REALLY excited about this PSU!

Any news on when we can expect any news? haha

The DPS-2 should be presented and start shipping at the Munich Hi-End show. Together with the other two power supplies, the LNI-2 PS and LNI-2 DC. Details will be released then.

Maybe:
Standby operation only with the switched-mode power supply due to Directive (EC) No 278/2009.
https://eur-lex.europa.eu/legal-content … 32009R0278

Automatic switching on of the linear power supply unit (transformer) via the load request. The current mains voltage (115 or 230 volts AC) is automatically taken into account (bistable relay).

Housing as for ADI-2/4 PRO SE, so that extensions (battery, ...) can be installed later.

Like probably others, I am surprised that RME now wants to build a DPS-2 power supply in series:

" ... Therefore the ADI-2 ... achieves its technical specs even with less optimal power supplies. Or in other words: the choice of power supply is not critical."
User’s Guide ADI-2 DAC v3.1, page 10
User’s Guide ADI-2 Pro FS R - v 3.7, page 11
User’s Guide ADI-2/4 Pro SE - v 1.2, page 11

MC
2018-06-14 05:16:34
Re: iFi Audio Accessory iPower 12V/1.8A
...
"Technically the only improvement you could get is through perfect galvanic isolation to prevent AC leakage currents, a typical side-effect of switching power supplies. A linear one will not show that phenomenom. BUT the effect (if it shows up at all, simple grounding already removes it completely) is nothing more than a low level hum at around -130 dB. Not audible, and not causing mysterious jitter effects or similar which could change the 'sound' as such."
https://forum.rme-audio.de/viewtopic.ph … 18#p131918

amirm
Jun 2, 2019
Review and Measurements of the HDPlex 200W Supply
https://www.audiosciencereview.com/foru … pply.7713/

If someone uses the ADI-2 DAC / PRO only for listening and is not able, for example, to determine whether the SPDIF cable is good or bad, they don't need the DPS-2.
If someone uses the ADI-2 DAC / PRO - especially the ADI-2/4 PRO SE in RIAA mode - for measuring, DPS-2 probably has advantages in the area of background noise.

RME should promote a DSP-2 only for measurement use, so that some people don't remember the negative business model of e.g. CYRUS (PSX-R, PSU-XR) ... Of course, RME will not be able to exclude that there are some people who buy a DSP-2 for better listening.

Interesting spectral analyses of the output voltages of a power supply unit at +12 V, 1 A top or +12 V, 0.1 A bottom (errors in the text, but diagrams are correctly labelled) in comparison with the spectral analyses of the DSP-2 soon to be presented.
https://funk-tonstudiotechnik.de/PWS-08 … ch-600.pdf

Nice, thank you!

See you at Munich then.

Will the DPS-2 (or the LNI) power supplies be compatible with the ADI 2 Dac FS (sounds like the DPS might be?), and could you expect any improvement in sound quality from using them?

Why should one add then this box to the system?

Cause some people will hear a difference

reparability, and reliability pretty much, switch mode psu's performance gets worse as the caps in them age and they aren't very reparable since you have to destroy the case to open them, those psus can also be used with non rme products where they might make a difference.

Radio silence...

I visited RME at Munich High End and they told me that it would take more time due to availability of spare parts. Apparently there will be different PSUs and the price span will also be big
I probably do not need it but somehow I want it...

Yeah, any news on this RME?

Wondering about this too!

@MC

Could you please give an overview about the currently available ADI-2 PSU’s, and there markings for identification?

Is there a change in the latest ADI-2 DAC / Pro deliveries to the new style 3-prong ADI-2/4 Pro SE PSU?
Can this one be ordered from RME?

On occasion of another thread here I found these informations are missing, even Google didn’t reveal anything useful.

Johannes AU wrote:
May be something under development.
https://av.watch.impress.co.jp/docs/ser … 41063.html

May be those pair of socks are more usefull than a linear power supply for your RME.

There are power banks available with 12 V AND standard USB outputs.

This LPS for around 100€ looks pretty good to me:
https://de.aliexpress.com/i/1005002753256975.html

Thanks KaiS. Missing any kind of certification plus you never acess the manufacturer for compensation of the burned down house add to this.

The DPS-2 and the LNI-2 DC will be annouced officially soon and available soon as well. Development and final manufacturing took much longer than expected, but the final products are worth their price and true RME in any way. Which also means they are not cheap, sorry.

sorry to chime in on an old topic... can I ask what's the difference between DPS2 and the two LNI2?

I don't see why it should be a problem
Personally, I'm happy to buy some peace of mind...

Jason Stoddard at Schiit Audio has addressed the question of using a linear power supply with some of their equipment, via the FAQ for one of their DACs:

"Well, I’m gonna get me a fancy-shmantzy linear power supply, what do you think about that?"
We think you’re a little strange, because the output of that fancy power supply is going into a switcher, anyway. But if it makes you happy, we’re not going to stop you. Nor will we try to sell you such a power supply.

==========

I think I recall reading in the manual for my ADI-2 DAC FS that there is a switching supply inside... such that the same issue exists...what good is a linear power supply going to do when it's going to meet an internal switcher INSIDE the equipment?

Specifically: Using a linear power supply with a device that has an internal switching supply is pointless, why bother?

Question: Is that what is going on here?  Is this new linear power supply pointless in terms of "improving sound quality"?  Is it being made for the purpose of placating those customers who insist on having a linear power supply? 

Apologies if I'm (probably) completely ignorant regarding the necessity, effectiveness, or purpose of the linear power supply.

Ps: My ADI-2 DAC FS is on its way to replacing a $12,000 preamp in my home audio setup.  A friend with "very expensive" gear has found the same... we both love the device and hope continued development for "home audio" products continues. 

Thank you for making the ADI-2 DAC FS!

One thing I am currently experiencing with the ADI-2 DAC FS... with my Ayre Acoustics VX-5 Twenty amp "ON", and the ADI-2 DAC FS "OFF"... there is a slight hum thru the speakers.  That is via Balanced cables.  That is the only time I've ever experienced hum thru my Ayre gear. 

All of the gear is plugged into an Equi=Tech 1.5Q... "Balanced Power".  No idea how / whether that has anything to do with the ADI-2, but I have other switched power supplies in use that don't create hum. 

Not sure what's "not happy" in the system when the ADI-2 DAC is "OFF", plugged in, and connected to am amplifier that is "ON".  When the ADI-2 DAC is "ON", it's fairly quiet.  It's not as quiet as my Ayre Acoustics KX-5 Twenty preamp, but it's not an "issue".

"Balanced Power":

https://equitech.com/what-is-balanced-power/

Equi=Tech Model Q:
https://web.archive.org/web/20041105234 … modelq.pdf

You generally want to keep digital and analog devices on seperate transformer isolated power banks.  Digital devices typically run on noisy, light weight, efficient, switch mode power supplies.  Analog devices typically run on quiet, heavy, inefficient linear power supplies.