For DJs and mobile sound engineers who monitor straight from an iPhone, the Fiio Q1 Mark II turns a stock headphone jack signal into something far more revealing. Built around an XMOS platform, it natively decodes up to DSD256 (shown by a green indicator light) and handles PCM up to 384kHz/32-bit, with dual crystal oscillators dedicated to different sample rates so timing stays precise across formats. It’s a level of format support you’d expect from a much pricier rig.

Inside, the component choices reflect serious attention to detail rather than spec-sheet padding. The AKM AK4452 DAC chip delivers a strong signal-to-noise ratio with minimal distortion on high-res material. Headphone output runs through the OPA926 amp chip – the same one found in Fiio’s own X7 Mark II AM3A amp module – prized for its very low noise floor. Line-out filtering is handled by a Texas Instruments OPA1662 low-pass filter, rounding out a signal chain built from proven parts rather than generic substitutes.

Set-up is straightforward: connect the included Lightning-to-micro USB cable between your iPhone and the Q1 Mark II, and your existing 3.5mm headphones become a genuinely capable monitoring tool. Whether you’re checking mixes on a club break or reviewing a set on the move, this compact DAC/amp bridges the gap between your phone and real audio fidelity without adding bulk to your gig bag.

Native DSD256 and 384kHz/32-bit PCM decoding via XMOS
Dual crystal oscillators for accurate digital-to-analog conversion
AKM AK4452 DAC chip
OPA926 headphone amp chip (as used in Fiio X7 Mark II AM3A module)
Texas Instruments OPA1662 line-out filter
Includes Lightning-to-micro USB cable for iPhone connection

Brand: FIIO

Fiio Q1 Mark II Portable DSD DAC/Amp for iPhone

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