DAC / AmpOverreview

FiiO KA11

Name: FiiO KA11
Brand: FiiO

Desktop-class numbers in an 8.5-gram dongle for $33 — and a long argument about heat, the cable, and how long it lasts.

31 sourcesUpdated 2026-09-29

$33Typical US price

Score aggregates reviewer opinions across topics.

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The short version

What to know.

A $33 USB-C or Lightning dongle with a CS43131 DAC and a dedicated amplifier chip, rated at 200 mW into 32 ohms from one 3.5 mm output. Sources agree on the power, which measured at 161 mW into 33 ohms and drives most IEMs and many full-size headphones; on a quiet background with sensitive IEMs; and on the value. The feature set is thin — no volume buttons, no microphone support, no parametric EQ, and app settings reachable only from Android. They divide on three things. Durability splits press from owners: reviewers working from supplied units call the build flawless, while a large share of owners and one retailer report the fixed cable cutting out or the unit dying within weeks to months. Heat and battery split the same way — acceptable warmth to most reviewers, a hot barrel and a draining phone to many owners. And the sound splits three ways: most hear a mild warm, mid-bass lift, a smaller group hears it as neutral (which is what the bench shows), and a few hear it as forward, thin or no better than a cheap dongle.

About this product

The Jade Audio–branded cable dongle with one Cirrus CS43131 DAC and an SGM8262 amplifier stage, sold in USB-C and Lightning editions with a fixed cable. Not the lower-powered JA11, not the dual-CS43198 KA15, and not FiiO's desktop K11.

FiiO's KA11 looks like the adapter that used to come in a phone box: a short braided cable with a USB-C or Lightning plug at one end and a small aluminium-magnesium barrel at the other, 44.5 mm long and 8.5 grams. Inside the barrel are a Cirrus Logic CS43131 converter and a separate SGM8262 amplifier, which is what lets it claim 200 mW into 32 ohms from a single 3.5 mm jack — several times what a stock phone dongle delivers.

It launched in January 2024 at $29.99 under FiiO's Jade Audio sub-brand, collected warm reviews from the enthusiast press, and in January 2026 measured at desktop-class distortion on the Audio Science Review bench. Alongside that, a steady run of owner reports describes a dongle that runs hot and, for a noticeable share of buyers, a cable that starts cutting out after weeks or months. Both stories are true; they come from different people holding it for different lengths of time.

A good fit for

Phone or laptop listeners who need more power than a stock dongle for harder-to-drive IEMs or headphones
Anyone with sensitive IEMs who wants a silent background on a budget
Desk or stationary use where the cable isn't flexed in a pocket all day

Think twice if

You need a microphone on a headset cable, or on-device volume buttons
You want app control from an iPhone
It will live in a pocket and take cable strain daily — owners report dropouts without a strain relief
Battery life on your phone matters more than output power
You drive high-impedance or large planar headphones as your main pair

The reviewer consensus

Agreement &
disagreement.

3 / 7topics divide opinion

4 Mostly agree3 Divided opinions

Common ground5

Far more output than a phone dongle: 161 mW into 33 ohms measured, enough for most IEMs and many full-size headphones
Quiet with sensitive IEMs — no hiss, EMI or plug-in pop reported by most sources
Measures at desktop-class distortion on the ASR bench
Strong value at around $30
A thin feature set: no volume buttons, no mic support, no EQ, Android-only app control

Points of contention3

Durability — reviewers on supplied units call it flawless; many owners report the fixed cable cutting out or the unit failing within months
Heat and battery — acceptable warmth to most reviewers, a hot barrel and a draining phone to many owners
Sound — a pleasant warm tilt for most, neutral for the measurement-minded, forward or thin for a few

A closer listen.

7 topics · 3 divided

Left: criticalRight: positiveTighter lines: more agreement

Choose a topic

Power

PositiveMostly agree

Reviewer sentiment18 supporting sources

CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

The clearest agreement in the record. The bench measured 161 mW into 33 ohms and a 2.6 V maximum, and reviewers report it driving demanding IEMs, planars and 300-ohm Sennheisers to useful levels from a phone. The limits are the ones the numbers predict: into 300 ohms it makes only about 22 mW, so high-impedance headphones get loud but lose some control, and reviewers stop short of recommending it for large planars. One owner heard messier bass than from an Apple dongle on every headphone he tried — the lone dissent.

“To my surprise, the Final E5000 and HD650 were serviceably driven on the KA11.”
baskingshark · Head-Fi

“At 300Ω, it can only deliver 22mW of output power which isn’t suitable for the likes of the 350Ω FiiO FT3”
Kurt · Headfonics

Measured

ASR measured 161 mW into 33 ohms and 23 mW into 300 ohms at maximum, and 2.615 Vrms maximum output (Amir, January 2026). An ASR member's multimeter read 2.61 V at full volume into a line-level load. FiiO rates 245 mW into 16 ohms, 200 mW into 32 ohms and 22 mW into 300 ohms per channel.

Link to this topic

Transparency

Leans positiveDivided opinions

Reviewer sentiment19 supporting sources

CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

Sources split three ways. Half the weight hears a mild warm tilt — a mid-bass lift, fuller vocals, a smoothed top — and most of them like it, especially with bright IEMs. A smaller group, anchored by the measurements, hears it as neutral and clean. A minority hears something else again: one editorial calls it forward and slightly overdriven, and a few owners found it thin, muddy in the bass, or no better than a laptop jack or an Apple dongle. Level-matching and the default filter may account for some of the spread; the bench does not show a tonal tilt.

Measured

ASR measured SINAD of about 110 dB at the 2.615 Vrms maximum and a correct frequency response, with one flaw: the default slow filter attenuates by 26 kHz rather than 24 kHz. The review thread's poll stands at 81.7% Great and 15.2% Fine of 224 voters.

vs. listeners — The bench shows a flat response, so the warm tilt most listeners describe is not in the frequency response; one Headfonics commenter ties it to the default slow minimum-phase filter, which the Android app can change. Separately, ASR's standard tests do not include the multitone level sweep that exposes the low-level distortion some CS431xx devices show, the KA11's firmware (last updated March 2024) has no switch for it, and one member reports hearing it only faintly on a single track.

Where it splits

a mild warm, mid-bass-forward tilt that flatters bright IEMs50%

“The FiiO KA11 has an underlying warmth with vocals and instruments sounding more intimate than neutral.”
Kurt · Headfonics

clean and neutral — it measures transparent and sounds it29%

“Distortion is vanishingly low and slightly above nominal voltage output puts the KA11 squarely in desktop class performance and well above many dongles”
Amir · Audio Science Review

forward, thin or no better than a cheap dongle21%

“It has a rather poor sound quality.”
crx · Audio Science Review forum

Link to this topic

The hardware

Specifications.

Checked 2026-09-29

Design

Form factor: Dongle
DAC: CS43131 · Delta-sigma
PCM: 384 kHz / 32-bit
DSD: DSD256
Amplifier: Solid-state

Output

Output power: Single-ended: 245 mW @ 16 Ω · 200 mW @ 32 Ω · 22 mW @ 300 Ω
Output impedance: < 0.7 Ω SE
Signal-to-noise: ≥ 125 dB

Connection

Digital inputs: USB-C, Lightning
Headphone outputs: 3.5 mm
Microphone input: No

Physical

Weight: 8.5 g
Dimensions: 44.5 × 9.7 × 10.5 mm
Released: 2024-01

Sold as separate USB-C and Lightning editions; each has one fixed cable. Manufacturer-published figures, not measurements · from jadeaudio.com, jadeaudio.com.

Follow the evidence

Sources 31

Read with context

Limitations & method.

As of 2026-09-29

What to keep in mind 6

A read of where the reviews and owner reports land as of September 2026. Dongles in this class turn over quickly, and same-chip rivals have come and gone around it.
Almost every published review worked from a unit the maker supplied, and loan units rarely live long enough to show cable wear. Owner reports gathered over months are where the durability and heat complaints come from, so weigh both.
Owner star ratings skew positive, since they mostly come from people who chose to buy it — though here the owner scores sit lower than the review scores, which is itself informative.
How much power you need depends on your headphones. Impressions from someone with sensitive IEMs describe a different experience from someone driving 300-ohm or planar headphones.
If you use an iPhone, the settings app is Android-only; changes made from an Android phone do carry over, because they are stored on the dongle.
Sound descriptions of source gear are sensitive to volume matching and to which filter is selected, so treat the warm-versus-neutral debate as a mild difference rather than a transformation.

Where to buy Product & retailer links

FiiO KA11 Amazon

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FiiO KA11

How the score adds up

What to know.

A good fit for

Think twice if

Agreement &
disagreement.

Common ground5

Points of contention3

A closer listen.

Power

Measured

Noise

Measured

Transparency

Measured

Features

Measured

Ergonomics

Measured

Build

Measured

Value

Specifications.

Design

Output

Connection

Physical

Sources 31

Limitations & method.

What to keep in mind 6