You should be able to send a Line Out level signal to the powered monitor. This could be a portable music player, an old cassette deck or tuner, or a guitar amp that has a line out jack. The DI output of older amps should be line out level, but it might also be a microphone level signal, which is too low, but even that would prove the monitors are working. The headphone jack on the iPad isn’t line level but as long as you only turn it up halfway or two-thirds, it’s close enough.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.