Edit - This was being written as andrewjohn007 was responding and therefore some of the information is redundant.
Aren't there clear markings on the outside of the insulation of your pre wired DC barrel plug? No company makes something like this where it isn't possible to tell which lead is which.
Also... You could use a multimeter to determine and mark which of the two leads is tip positive. Not too hard to do this yourself.
Depending on what is used... There are either smaller wires on the inside of the outer insulation, each with their own color coded insulation, or there is a clear indicator on the outside of the positive wire. A white line, a dotted line, a texture, etc.
Aside from this. Hooking up the Aiyima to the power supply this way for normal, every day use, although it works, is ultimately the most unsafe way to do this. Or should we say, it presents the most risk. You have to secure the AC line so it doesn't pose a risk for electric shock. I was a naysayer at first and scoffed at the concern others had for my first version of the implementation of this Drok power supply.
Ultimately, its just better to be safe and I like how version 3 turned out. I have a larger V4 planned that incorporates an isolated DC to DC module with filtering so I can run my entire setup from the one power supply.
See the Pics
So here is my solution. Instead of just bare wires, or spades being attached to the terminals and then these wires running to the amplifier..
I used 5.5x2.5 DC sockets, a heavy duty toggle and an IEC socket. The enclosure is vented both top and bottom. All the wiring is covered and protected from any contact inside this enclosure.
This version has the DC sockets wired to the terminals tip positive obviously. The third terminal is wired to a step down buck converter for 5V 3A USB output. It is however not clean power for audio and is only used for illumination and a cooling fan setup.
I power both my A07 and my A3001 with this same Drok supply.
5.5x2.5 male to male DC cables can be purchased on Amazon. They can come without without ferrite cores built in.
I do own the barrel plug the other contributor suggested, however I opted for a more robust Oyaide DC-2.5G Canare-4S6 Power Supply Cable that was made for me by Ghent Audio. This is by far a superior DC barrel plug with a 4x20 AWG Star Quad cable. -
http://ghentaudio.com/part/dc03.html
These can also be upgraded to 4x20awg OFC, 4x16AWG and even a double shielded JSSG360 version if you needed it.
I am not advising against anyone elses proposed solutions. I am simply offering mine as an option.
Good luck with your setup.
