I have an A4 MKII and a DT, but I accidentally mixed up their power adapters yesterday. Does anyone know how to tell them apart? From the logo above, they are both 12V/2A, but one seems to be slightly larger than the other. I would prefer to know which one they belong to. Any advice?
Maybe check out the Thomann website. The pictures show what’s ‘in the box’, has pictures of the power supply too. It’s Digitakt II instead of Digitakt, but I kinda assume they have the same power supply. A4 has the bigger supply it seems.
Sorry, my typo, mine is A4 MKII, DT is the first generation, I have modified it in the original post. My guess is that since A4 is bigger, its adapter should also be a bit bigger. Since both of these things are relatively expensive, especially the A4 MKII, I would still like to be cautious.
There is actually a compilation of the power supply specs for comparison, I think it’s an official elektron knowledge base thing but it might be here on Elektronauts. If you give me a couple minutes I’ll track it down, what I’d want you to do is look at the actual model number of the power supply (i.e. PSU-2b or PSU-3c etc) and we should be able to determine which is compatible with which.
No problem here as they are both 12v and the polarity is the same.
voila.
The info is a little outdated but ̶P̶S̶U̶-̶3̶c̶ ̶s̶h̶o̶u̶l̶d̶ ̶b̶e̶ ̶t̶h̶e̶ ̶s̶a̶m̶e̶ ̶a̶s̶ ̶P̶S̶U̶-̶2̶b̶,̶ I don’t think there’s an issue with either supply being compatible with either machine, as long as they are the original PSUs.
ANALOG RYTM MKI/MKII, ANALOG FOUR MKI/MKII, OCTATRACK MKII, ANALOG DRIVE, ANALOG HEAT MKI/MKII, DIGITAKT, DIGITONE, DIGITONE KEYS, SYNTAKT
Current Elektron power supply: PSU-3c. These devices were originally shipped with PSU-3, PSU-3b, or PSU-3c. All these devices work with PSU-3 and PSU-3b (With the exception of Analog Drive which doesn’t work with PSU-3). The PSU-3c power supply handles voltages of 100-240 VAC, 50/60Hz.
The power supply you want to use must meet the following specifications:
- Voltage: 12 VDC
- Minimum Current Rating: 2 A
- Barrel Connector Size: 5.5 mm outer diameter, 2.5 mm inner diameter
- Polarity: Positive center
edit: Sorry but I think that the “2” model is not the same as the “3” model, just for the record. Go off of the official information.
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Thank you very much, but I don’t have them with me right now and I can only see them tomorrow, but I remember they are the same model. There is only a very small difference in size.
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Ok, I’m sure that’s just newer vs older. The newer ones have been reported to create a little more self-noise, but nothing that impacts audio.
OK, since I will use it tomorrow, I won’t worry about it. However, out of habit, I will use the slightly larger one on the A4 MKII. 
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I suspect the larger supply goes with whichever unit was manufactured first so you could check the build date on the bottom if you’re at all hesitant. Good luck!
Not really - they have been shrinking with each successive iteration, likely within a range too over time
If you want to get where you were just look at the release numbers - it’s possible the DT could be the oldest version !
In any case - it’s academic - they are identical power-wise
The smaller newer ones are what i pick out of the box
The only meaningful observation here (since OT moved to 12V) is that early MK1 analogs came with a slightly beefier 2.25A or maybe 2.5 psus but even those are officially fine swapped out for a 2A psu (iirc)
I found that both adapters had the same specs, but the Digitakt manual showed that it was drawing a bit less power - 7W typical, 12V, 1A barrel jack, while the A4 MARKII was a bit more powerful (15 W typical, 20 W maximum). Both adapters were PSU-3b with the same specs, so I randomly swapped them to try to power both devices, and it seemed to work. Problem solved. Thanks everyone, especially shigginpit.
older PSU types are transformer based AC/DC converters newer PSU’s (smaller and lighter ones) are switched mode PSU’s, they both output same Voltage and Amps etc
Yeah, I guess so, as long as it works, it’s fine.