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FiiO QX11 Review: The Swiss Army Knife Dongle for Music and Games

  General / Packaging / Build The QX11 is FiiO's newest USB DAC/amp dongle, and it sits at the top of their dongle range now. It is not your typical music-only dongle though. FiiO calls it a HiFi DAC/amp and a gaming sound card in one. Inside are dual ESS ES9069Q DACs and an all-TI analog stage. Two OPA1692 op-amps handle voltage gain, and four OPA1622 run in parallel for the headphone output. It decodes up to 768kHz/32-bit PCM and native DSD512 in HiFi mode. The body is aluminium alloy with a gradient finish, in Dark Green or Vintage Gold. It measures about 64 x 28.8 x 13mm and weighs roughly 36g. Small enough to live on the back of a phone. There is a 1.14-inch colour LCD on it as well, and the interface changes depending on whether you are in HiFi or Gaming mode. Two USB-C ports. One for data, one dedicated for power. Outputs are 3.5mm single-ended and 4.4mm balanced. In the box: USB-C to USB-C data cable Protective case Quick start guide Warranty card Specifications Dual ESS ES...

Tanchjim Ola II Review — Coaxial Hybrid Done Right?

 


General / Packaging / Build / Comfort

The Ola II comes in Tanchjim's usual clean, no-frills packaging. Inside you get the earpieces, a high-purity silver-plated copper Litz cable, six pairs of silicone tips (three narrow bore, three wide bore), and a storage pouch. Nothing extravagant, but nothing missing either.

Build quality is where the Ola II punches above its price bracket. The faceplates are aerospace-grade CNC-machined aluminum alloy, and the round-and-square design carried over from the original Ola still looks distinctive on the table. The shell is polycarbonate, roughly 5 grams per side, so weight is a non-issue.

Comfort-wise, I don't feel any discomfort during my listening session that lasted 2-3 hours, and to my ears that translates to a genuinely ergonomic fit. The nozzle has a reasonable bore size and I don't feel any driver flex or pressure buildup issues to report here — vented design does its job.

Gears Used for This Review

  • Aune S18 Evo DAC

  • Aune S17 Pro Amp

  • Burson Conductor Stellar

  • Tanchjim Space II

  • FiiO M33 R2R

  • xDuoo Link3

  • FiiO K17 R2R

Foreword

My review is solely based on what I hear via my equipment and I never consider my reviews to be objective in any way rather a subjective approach. Do take into consideration that everyone's ear anatomy is not the same, so the psychoacoustics perception might be different as well, but i believe it will not stray too far.



Sound Impression

Out of the box, the Ola II already sounds fairly composed, but after the 30-40 hours on my burn-in rig, the treble settled slightly and sounded more refined, and the bass became slightly more controlled over the first 20 hours. Overall tonality lands on neutral warmth with a tinge of energy at both ends — Tanchjim didn't go full V-shaped here, but there's enough sparkle and bass presence to keep it funalytical rather than clinical.

The coaxial arrangement between the 10mm DMT5 dynamic driver and the PURE Hi BA is doing real work. Coherence between the two drivers is excellent — no obvious crossover seam, no timbral mismatch that you sometimes get with cheaper hybrids.

Bass

  • DMT5 dynamic driver delivers punchy, well-textured bass

  • Sub-bass rumble on Daft Punk has good depth without turning boomy

  • Mid-bass has decent body but stays controlled — doesn't bleed into the mids at all

  • On Slipknot's People = Crap!, bass speed keeps up with the double kick reasonably well, though it's not the fastest I've heard at this price

  • Texture is a step above what I expected from a budget hybrid — you can hear individual bass notes decay rather than smear together

Mids

  • Vocals are pushed forward slightly — picture the artist as 3-4 steps in front of you

  • Male vocals have a good chesty weight to them — Zhao Peng's low baritone comes through with proper density, not thin at all

  • Female vocals on Faye Wong tracks are clear and textured, with just enough sweetness to avoid sounding sterile

  • Mids sit slightly forward in the mix compared to a strict neutral tuning — vivid rather than laid-back

  • Instrument separation in the midrange is solid for a single BA handling this region indirectly through the coaxial design

Treble

  • The treble extends well without turning shouty

  • Cymbal decay on Hans Zimmer's Why So Serious is detailed, with good retrieval of micro-details in the string layering

  • Energy at the top is present but Tanchjim kept it just on the right side of politeness — to my ears it avoids being borderline shouty on certain tracks, which is a common trap for hybrids at this price

  • Air is good, not the most extended I've heard, but for the asking price this is a non-issue


Soundstage / Imaging

  • Staging leans slightly out of head rather than 2D-ish, which is a nice surprise for a $50-class IEM

  • Width is more generous than depth

  • On YungBlud's Zombie Live from Bludfest, the live recording ambience translates reasonably well — you get a sense of space rather than a flat wall of sound

  • Imaging precision is good enough to track individual elements during Metallica's Lux Aeterna without things collapsing into a blob during the faster passages

  • Not quite a hall like effect, but there's real dimensionality here

Driveability

  • FiiO KA17 (dongle): Drives the Ola II with zero effort. Bass control and dynamics are already close to what I'd consider the ceiling for this IEM.

  • xDuoo Link3: Slight warmth injection compared to the KA17, complements the already-neutral warm signature nicely, especially for vocal-centric listening.

  • Aune S18 Evo + S17 Pro stack: More resolving top end and a noticeably blacker background — pitch black noise floor here — but honestly this is diminishing returns given the Ola II's 30 ohm impedance and 121dB sensitivity.

  • FiiO M21 (DAP): Comfortable, full-bodied pairing, good for long listening sessions without fatigue.

Entry level or mid range dongle will do just fine here. The Ola II doesn't scale dramatically with better sources — you get incremental gains in resolution and noise floor, but nothing that changes the fundamental character.

Comparison

  • vs. original Tanchjim Ola: No contest here — the Ola II's coaxial hybrid setup simply outclasses the single dynamic driver of the original in every category: bass texture, treble extension, and staging. If you already own the original Ola, this is a worthwhile upgrade. If you don't, just skip straight to the II


Final Thoughts

The Ola II is a genuinely well-rounded IEM for its price bracket. Tanchjim clearly put real engineering into the coaxial DD-BA arrangement rather than just slapping two drivers together and calling it a hybrid, and the result is a coherent, vivid, and easy-to-drive set that doesn't ask much of your source gear. It's not going to run circles around IEMs twice its price, but for the asking price it does everything right, and there's very little to complain about beyond some purely nitpicking observations about the stock cable and case. 

The Tanchjim Ola II was sent over by Tanchjim for the purpose of this review. Big thanks to the Tanchjim team for the support and opportunity as always.

Head over to their store if you are interested in getting a pair:


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