That Behringer headphone amp is long discontinued. I'm surprised that any still work. That entire series was way too noisy for my taste as were my other Behringer PowerPlay 'phone amps. Good riddance.

My favorite compact unit is this $40 baby from Mackie. Takes a headphone out, gives you 4 with individual volume. Loud, clean and almost no self noise. Wall wart included, shielded stereo TRS cable is not,


Mackie HM-4



BIAB 2024 Audiophile Mac
24Core/60CoreGPU M2 MacStudioUltra/8TB/192GB Sequoia, M1 MBAir, 2012 MBP
Digital Performer11, LogicPro, Finale27/Dorico/Encore/SmartScorePro64/Notion6 /Overture5