Audiophilepure

https://www.audiophilia.com/reviews/2026/2/28/allnic-audio-asra-rhpa-7500-headphone-amplifier

Power output from the single set of speaker taps is 10 watts in triode mode and 20 watts in pentode mode. This mode can be changed (while the amp is off) by convenient toggle switches in the tube compartment. 

Power available to the various headphone taps is not as clear, although I heard from Kevalin that the ribbon output offers 4 watts. Based on my listening, the single-ended and balanced outputs offer a hilarious amount of power, and I can’t imagine there is a headphone that the RHPA-7500 could not drive.