Searching for proper components to build this cable occupied a bit time, but there they are:

Cable

I first met with this types of cables in Wink Company. They are producing concentrate juices and have huge machine park. I had practice there. You now… connecting few hundreds of different sensors is a great fun ;) Short characterization: Helukabel TOPFLEX, 3x2.5mm2, shielded.

IEC female plug

At first I was disappointed. Good connectors cost a lot of money (like wattgate) and cheap ones are mostly produced in Chinese (terrible quality). Finally I found something that satisfied me… This one can handle a 2.5mm2 wire and have very nice brass screw connector! Bought in local electric shop.

230V standard male plug

This one is BALS Elektrotechnik product. They are used in many ‘hi-end’ cables also in gilt version and have very good screw connectors which accepts 2.5mm2 wire. Made in few colors (blue, green, black and grey).

And here it is – professional power line cable for audio devices ;) Total cost: $30 + time for assembly components. Cable like this one are working in my system in connection with AC filter module presented on pictures below.