Power
Moderate · 6 srcEnough drive for IEMs and typical full-size headphones — with PowerMatch (the gain switch) and the higher-powered balanced output for tougher loads — but modestly powered for the price, and it runs short on demanding planars and high-impedance cans, where reviewers reach for an external amp.
“It supplies enough power for most headphones but will struggle with a handful of hard-to-drive variants. Efficient headphones and IEMs are best suited.”
Headfonics
“I found no difficulty driving higher impedance headphones, and low sensitivity models such as the Hifiman HE-560 had more than adequate drive.”
Andrew Allen Ballew · Euphonic Review (via Audiophile Style)
“Despite the low power output, I was only at noon on the dial on low gain which goes to show that the ZEN DAC 3 has plenty enough juice to drive the vast majority of headphones.”
u/OkRazzmatazz7121 · r/headphones
iFi rates the headphone amp at >390 mW into 64 Ω from the balanced 4.4mm output and >210 mW into 32 Ω single-ended — modest next to budget desktop amps like Topping's L30 II (multiple watts into 32 Ω). PowerMatch adds gain for high-impedance loads; the balanced output roughly doubles the voltage for tougher cans.
