Was going to post this on DIY but I didn't specifically build anything to make this project work.
Currently using a car battery to power my headphone rig. Cost me roughly £40. A lot of it could cheaper if bought from a car parts store (switch & fuse for example).
+£25 used car battery
+Gifted clamps
+£4 rocker switch (had to buy bundle of 20, Amazon didn't offer anything better)
+£7 inline fuse (had to buy bundle of 4, Amazon didn't offer anything better)
+Spare copper cable
+Gifted DC adapter
£2.50 block strip connector
£1.50 crimp set
+Spare crimping tool
-DC adapter positive and negative wire connected to left and right of block strip connector. Positive side to inline fuse, negative side to rocker switch.
-Rocker switch to negative clamp
-Inline fuse connected to positive clamp (via a half strip connector)
Hopefully the photos make it a little clearer (my explanation has probably made it more complicated than it actually is)
The battery powers my Capella amp which provides power for the SEG DAC. I've experimented putting the Dorado in front of all that but haven't heard a difference yet, need to give it more time.
All of this is a bit of a hassle but it is worth it for the clarity it gives. The noise floor is non existent to my ears with this set up, I can't recommend it enough.
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