seriousdetecting.comAnswer
May 29, 2026 - 10:27 AM
The FX-03 will physically connect to any detector with a 3.5mm headphone jack, but the 30-ohm impedance is optimized for XP's audio output specifications. Detectors from other manufacturers may use different impedance targets (8-ohm, 16-ohm, or higher), and connecting the FX-03 to those machines can result in volume mismatch, frequency response shifts, or amplifier loading issues. If you own XP metal detectors and want a universal wired headphone, the FX-03 is the best match, but detectorists running mixed-brand detector collections should verify impedance compatibility before using the FX-03 with non-XP machines.
