FiiO BTR17

HiFi, DAC
FiiO BTR17 — Desktop Power in Your Pocket

FiiO has spent a decade quietly perfecting the pocket DAC/amp, and the BTR17 is the point where the formula stops feeling like a compromise. This is a Bluetooth dongle that, given a second USB cable, will drive a pair of planars that used to demand a desk full of separates. The BTR7 was good; this is the one that made me wonder what my desktop stack is actually for.

Build & Design

A neat aluminium slab, denser and more substantial than a Qudelix-5K, with a bright 1.3" IPS screen that’s genuinely readable outdoors and shows far more colour than a device this size has any right to. Both outputs are present and correct — 3.5mm single-ended and a 4.4mm balanced — and there’s a dedicated POWER IN port that unlocks the headline feature. The volume knob is the one bum note: it feels a touch flimsy against an otherwise premium shell, and the accessory box is sparse. There’s no wireless charging either, which at this price is a fair omission but worth knowing.

Sound

Character

Dual ES9069Q chips — ESS’s fourth-generation 32-bit parts, rated at 130dB dynamic range — feeding a THX AAA 78+ amplifier. On paper it’s a measurement monster; in the ear it leans a hair warmer than dead-neutral, with a gently elevated sub-bass that gives everything a pleasing sense of weight without smearing the mids. It’s dynamic and engaging rather than clinical. Only genuinely edgy with very sensitive IEMs wound up loud — most of the time it’s smooth, resolving and easy to live with. The 10-band PEQ, adjusted in the FiiO Control app, is superb and lets you dial the character exactly where you want it.

Power & Desktop Mode

This is the trick. On battery it already puts out a healthy 300mW per channel balanced — plenty for IEMs and most portable cans. Connect USB power and flick on Desktop Mode and it parallels four op-amps to deliver 650mW+650mW into 32Ω, more than double the BTR7. That is desktop-amplifier territory in something you can palm. Bluetooth 5.4 over Qualcomm’s QCC5181 covers LDAC and aptX Lossless, so even the wireless path is close enough to wired that I stopped worrying about it.

Comparisons

Against the Qudelix-5K — still the value benchmark, and reviewed here separately — the BTR17 is pricier and bigger, but the screen, the build and above all the Desktop-Mode power put it in a different weight class. Against a Chord Mojo 2 it can’t quite match that Rob Watts magic in outright texture, but it’s smaller, wireless, has a screen and costs a fraction. The real question it raises is closer to home: for casual listening the BTR17 gets uncomfortably close to my RME ADI-2 without the desk space. TechRadar called it “a tour de force at a very attainable price,” and Headfonics and What HiFi landed in the same place — the measurement crowd at ASR have nothing to complain about either.

Verdict

Pros

  • Desktop-class 650mW balanced output in a pocket device
  • Excellent dual-DAC measured performance, THX AAA 78+ amp
  • Brilliant 10-band PEQ and a genuinely usable screen
  • LDAC and aptX Lossless — wireless you don’t have to apologise for

Cons

  • Battery life (~8–9h with IEMs) no better than before
  • Flimsy volume knob and a bare accessory box
  • No wireless charging
  • Warms up when wireless and driving harder loads

Ratings:

  • Build & Design: 8 / 10
  • Sound: 9 / 10
  • Features: 9.5 / 10
  • Value: 9.5 / 10

The BTR17 is the first Bluetooth dongle I’ve used that made me question whether I still need a desktop headphone rig at all. At £179 it’s almost silly.