FiiO BTR3k
The BTR3k delivers a warm, non-fatiguing listen with natural bass, tidy detail and a slightly expansive stage. PortaFi found its presentation accurate and capable with IEMs, while AV Atmos highlights the extra drive of its 2.5 mm balanced output. Broad LDAC codec support, stable Bluetooth and compact versatility make this a standout portable DAC/amp.
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Nicely Roasted
Sound Quality
86/100
Build Quality
87/100
Features Usability
88/100
Value for Money
89/100
Pros
Warm, musical, non-fatiguing tuning with natural bass and good overall accuracy.
Balanced 2.5 mm output adds meaningful power for demanding IEMs and many full-size headphones.
Broad Bluetooth codec support and generally stable wireless connection enhance portable usability.
Cons
Best LDAC sound requires manually selecting the best-sound-quality setting in Bluetooth options.
Lower-quality Bluetooth codecs reduce resolution and stage size, with more compressed mids and simplified treble.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 86/100
Reviewers find the BTR3k notably capable for a small Bluetooth DAC/amp, with an accurate presentation, good spatial separation, and a warm, non-fatiguing character. Its strongest results depend on using the higher-quality Bluetooth modes; lower-grade transmission is reported to reduce resolution, shrink the stage, and introduce some midrange compression.
Transparency Resolution
88/100
PortaFi calls resolution quite good and finds the stage slightly wider than average, with good separation of layers. It also reports that Bluetooth itself takes away some detail, while lower-quality codecs further reduce resolution and simplify the treble; LDAC improves both detail and extension.
Tonal Balance Musicality
90/100
AV Atmos praises the AKM-based presentation as warm, bass-capable, musical, and free of the clinical or shrill edge the reviewer associates with some alternatives. The same reviewer found it easy to listen to for long periods without fatigue, while PortaFi describes the overall sound as accurate.
Dynamics
87/100
AV Atmos says the BTR3k hits hard and has plenty of impact, describing it as powerful for its size. PortaFi reports sufficient output for IEMs from the standard jack and says the balanced output can drive full-size headphones without difficulty.
Noise Floor
75/100
The supplied reviews do not directly discuss hiss, hum, background silence, or performance with highly sensitive IEMs. They do describe clean and enjoyable sound, but provide little specific evidence about residual noise.
Headphone Compatibility
90/100
PortaFi reports no load-related problems with IEMs and finds that the balanced output expands its ability to drive full-size headphones. AV Atmos likewise highlights the 2.5 mm balanced connection for more demanding balanced-cable IEMs and calls the output powerful for this compact device.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
87/100
AV Atmos describes the unit as having very good build quality and considers FiiO DAC/amps durable products. The reviews offer little detail on controls, connectors, long-term wear, or mechanical reliability beyond that positive assessment.
Features Usability
88/100
The BTR3k combines a 2.5 mm balanced output with Bluetooth 5.0 and broad codec support including LDAC, aptX HD, aptX Low Latency, AAC, and SBC. Reviewers also report very good connection stability, though one notes that users must manually select the best-sound-quality Bluetooth setting to access LDAC performance.
Value for Money
89/100
At roughly $60-$70, reviewers regard the BTR3k as a compelling portable DAC/amp and recommend it enthusiastically. AV Atmos calls it an excellent budget Bluetooth DAC/amp and a fantastic product, while PortaFi considers the asking price good overall.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
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Specifications
Manufacturer's Description — FiiO
BTR3K-Balanced HiFi Bluetooth Amp
Balanced output | Supports Bluetooth 5.0 High-performance AK4377A DAC*2丨CSR8675 Supports LDAC/aptX HD lossless Bluetooth codecs
The product picture is for reference only
Captivating you through your fingers
Silky smooth surface
The aluminum alloy body wrapped elegantly in an arc of 2.5D glass like that used in the latest smartphones, the oleophobic coating that keeps off fingerprints, the high contrast black lettering and the smooth texture give the compact BTR3K an elegant look that would not be out of place in a specialty artisan's shop.
Now with balanced and SE output
Incredible performance gains
Building off of what made the BTR3 so good, the BTR3K implements balanced output. It is a truly balanced design, with a DAC and amplifier carefully paired for the left and right channels each, for the purest sound possible.
Robust, full-bodied sound High performance AK4377A DACs
With two high-performance AK4377A DACs, the power output has increased by 50% compared to the AK4376 used in the BTR3 as well as greatly improved measurements and actual sound.
78mW
Output power balanced
25mW
Output power SE
-107dB
Distortion
122dB
S/N Ratio
Independent dual crystal oscillators for accurate audio reproduction
The dual crystal oscillator system in the BTR5 also comes to the BTR3K! The 22.5792M/24.576 MHz dual crystal oscillators mean that during Bluetooth and USB decoding, the BTR3K can more accurately reproduce audio signals under various sampling rates – due to greatly reduced jitter and greatly increased audio stability.
A robust inner core
Qualcomm CSR8675 Flagship-level Bluetooth abilities
The Qualcomm CSR8675 Bluetooth chip used in the BTR3K is a premium low-power solution designed for enhanced audio applications, with a 120 MHz DSP, support for 24-bit transmission and processing as well as abilities to decode multiple lossless Bluetooth codecs. No matter whether you watching videos, listening to music, or enjoying your favorite game, this chip will ensure you get excellent sound quality.
Speedy Bluetooth
connection
The BTR3K upgrades to Bluetooth 5.0, which means faster pairing and more stable signal strength for a better overall experience. It fully supports AAC/SBC/aptX/aptX LL/aptX HD/LDAC audio formats that you’ll get the best sound
quality possible from the BTR3K.
An extremely useful little light
With so many Bluetooth formats being used in various places, the RGB light indicator quickly tells you which format is currently being utilized.
Blue light: SBC
Cyan light: AAC
Purple light: aptX/aptX LL
Yellow light: aptX HD
White light: LDAC
Listen and charge with Type-C
You can listen while charging with the USB Type-C connector. As a matter of fact, the BTR3K takes only 1.5 hours to fully charge but allows for a lengthy 11 hours of playback!
Crystal-clear calls free of noise
The built-in amplifier in the BTR3k not only ensures your music sounds good, but that your calls do too. To further enhance your calling experience the BTR3k is not only equipped with omnidirectional microphone and phone controls, it is also equipped with the eight generation Qualcomm's cVc noise cancellation technology, which effectively suppresses background noise so that your call comes through as clear and audible as possible.
Flexibility specialist
Adapts to various kinds of wired headphones
The BTR3K can automatically tell what kind of headphones you plugged into it and adjusts its output accordingly. And when you plug in headphones with CTIA controls, you can use the microphone as well as the play/pause, volume, and track selection controls.
Great connection convenience
Supports pairing to 2 devices simultaneously
The BTR3K can be paired with and remember up to two Bluetooth devices at once, allowing for even more convenience. Simply use whichever device you want to pair the BTR3K anytime without hassle!
Quick and convenient volume control
When you connect the BTR3K to your Bluetooth device, the device's volume and the BTR3k's volume can be adjusted separately, allowing you to better fine-tune the volume to your needs. The BTR3K also remembers your desired volume, so you don't have to adjust the volume to where you want it every time you use the device.
Give a holler when you need help
Simply use the BTR3K to call up your smartphone's assistant without even having to pull it out.
Intelligently puts your music at your fingertips
When your device is connected to the BTR3K and is using the FiiO Music app to play music, the BTR3K can be remotely controlled with the following functions.
Free to go with
you wherever
You should be able to take your music with you wherever.
The BTR3K comes with a symmetrical, detachable rear clip that allows you to easily carry it around.
With MagClip Enjoy Hi-Fi on the go with greater ease
When used with the magnetic bundling kit MagClip, it is locked securely without wobbling, allowing for a more comfortable portable Hi-Fi experience!
Parameters
Volume Adjustment
Can be adjusted independently from phone volume
Bluetooth Profiles
A2DP (enhanced)，AVRCP，HFP，HSP
Bluetooth codec support
SBC/AAC/aptX/aptX LL/aptX HD/LDAC
Bluetooth Chip
CSR8675
DAC
AK4377A*2
Amplifier
USB DAC
Supported
Power/Pairing Button
Yes
Dedicated Pairing and Play Buttons
Dedicated Volume Buttons
Reception Range
Approx. 30 m (unobstructed)，LDAC (quality priority 4 m)
Format Indicator
SBC：Blue、AAC：Cyan、aptX HD：Yellow
aptX/aptX LL：Purple、LDAC：White
Hands-free Calling with Microphone
Voice Assistant Activation
In-line Controls
NFC
Not supported
Audio Outputs
2.5mm、3.5mm headphone jacks
USB Connector
Type-C
Battery
330mAh
Battery Life
Approx. 11 hours
Charging Time
1.5 hours
Check battery on mobledevice
Supported (Android device support for functionality will vary)
Auto Standby if no audio signal
Dimensions
58×25×11mm
Weight
23.5g
Included in Package
Manual and warranty Card, USB Type-C cable, rear clip, lanyard
Exercise
BTR3、BTR5、ES100 Comparison
Verified Dealers
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Authorized dealers for FiiO BTR3k
- 110Hz — online and in-store — Kielce, Województwo świętokrzyskie, Poland (website)
- Acoustic Technologies — online and in-store — Montréal, Québec, Canada (website)
- Addicted to Audio — online and in-store — Epping, Victoria, Australia (website)
- Advanced MP3 Players — online and in-store — Musselburgh, Scotland, United Kingdom (website)
- All Elite Audio — online and in-store — Perry Hall, Maryland, United States (website)
- Alpha Audio Pte — online and in-store — Singapore, Singapore (website)
- Apos Audio — online and in-store — Oakland, California, United States (website)
- Audeos — online and in-store — Żywiec, Województwo śląskie (website)
- Audio 46 — online and in-store — New York, New York, United States (website)
- Audio Affair — online and in-store — Deritend, England, United Kingdom (website)
and 59 more verified dealers