DIY: Make your own +15V DC power supply (for ES9038Q2M or other) (the cheap way)

okay, 😉
thought about the power supply (+15V or +/- 15V) for the ES9038Q2M (or the other Chinese-Boards, its basically the same); my bought,“normal“ 220V adjustable power supply has only 12V DC max and so i thought about another way; had a month ago a power supply for a Thinkpad T43, 19V i think, was sold and got today a HP power supply (for some printer)->32V..

2 (4) possibilities: either u buy directly a power supply from amazon/ebay/aliexpress->3$ and up

or use an old, unneeded one, like this HP one for printer for example, or laptop or something and buy a cheap „Step Down Power Regulator/Module“ from Aliexpress (of about 1,50$ and up)->

Input Voltage (this modul) 4-38V DC
Output Voltage 1,25-36V DC
Ampere max. 4A..
i read elsewhere that the ES9038Q2M only needs about ca. normal laptop or printer power supplies should be enough (this HP power supply has 625mA)
cut off the plug, and so u have your 2 wires to connect to your power step down module (or directly), adjust the right output voltage and wire it with 2 lines/cable up to the ES9038Q2M; easy as this 😉
(BUT, soundwise its really,really better to use a toroidal dual 15V transformer like this (25$)->
(or the ultimate HiFi-High End choice would be a „battery-pack“; for example a bike-battery 😉 😉 (12$+charger)

but for the „cheap“-beginning the above choice should be enough.. 😉

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