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The original was posted on /r/functionalprint by /u/MrPenisWhistle on 2026-05-14 20:45:26+00:00.

Original Title: Headphone Bluetooth amplifier had it’s battery bloat and couldn’t find an available replacement. So I opted to upgrade it instead and saw the opportunity to make it easier to attach to the headphones itself! A bit janky but it works.