"AES-3/RCA-RME-adapter":
DMX CABLE 110 OHMS (approx. 1.5 m)
Schematic: e.g.: RME, User's Guide ADI-2 DAC v2.4, page 36.
https://www.rme-audio.de/downloads/adi2dacr_e.pdf

In our setup there are sound dropouts when power consumers (LED lamps, neon lamps, ...) are switched on the same 230 Volt power circuit.

The problem is caused by the simple "AES-3/RCA-RME-adapter" - which has three problems:
- does not help with high frequency interference problems
- mismatch 110 to 75 ohms
- mismatch of voltage
RME should also give a better alternative in their manuals.

RME ADI-2-old (Hardware 1.4):
Audio dropouts are very short but audible.

RME ADI-2 DAC FS (Firmware: 27/34 | 34/34):
Audio dropouts are much longer than with RME ADI-2 old. The very fast display "sync/lock" confirms the dropouts.

Workaround (everything has been tested):

Adapter "AES-3 Output to BMC-2 Input" with DMX CABLE 110 OHMS (approx. 1.5 m)
tc_electronic_bmc-2_manual_english.pdf, page 17
https://www.tcelectronic.com/product.ht … Code=P0CIZ -> "Documentation"

A simple SPDIF toroidal transformer (1:1 with separate, insulated windings) before the ADI-2-DAC-FS | ADI-2-old.

More details and pictures:

https://www.audiosciencereview.com/foru … uts.21454/

If you want to solder the "AES-3 Output to BMC-2 Input" adapter.

If you want to buy a professional adapter and you are living in the EU:
AES-3/RCA-adapter - with galvanically isolated (transformer)
http://www.funk-tonstudiotechnik.de/AES … el-192.pdf