FiiO
FiiO KA3 USB DAC/Amplifier
Best portable DAC for audiophiles seeking high-resolution sound on the go.
The FiiO KA3 is a compact and powerful USB DAC/Amplifier designed to enhance your audio experience, especially for devices lacking a headphone jack. It features a high-performance ES9038Q2M DAC chip and supports robust decoding up to 32-bit/768kHz and DSD512. With both 3.5mm single-ended and 4.4mm balanced headphone outputs, it offers versatile connectivity for various headphones. The device boasts a clean sound with a high signal-to-noise ratio and low distortion, all housed in a durable, stylish full-metal body with an RGB indicator for sampling rate.
Owner Satisfaction
4.6
/ 5
Category Rank
263
/ 766
#263 in Headphone Amplifiers
DAC Chip
90382
/ ESQM
Who it's for
- Audiophiles seeking superior sound quality from mobile devices
- Listeners using a variety of balanced and standard headphones
- Commuters needing durable, high-fidelity audio on the go
Who should skip it
- Smartphone users concerned about daily battery longevity
- Users sensitive to hardware heat during long listening sessions
- Minimalists who prefer avoiding extra cables and dongles
Performance breakdown
Decoding Capability
Handles high-resolution files with ease, satisfying even the most demanding audiophiles.
Output Versatility
Dual 3.5mm and 4.4mm outputs provide excellent flexibility for various headphone connections.
Build Quality
Full-metal construction feels robust, premium, and built to survive daily travel.
Power Output
Delivers plenty of clean power to drive most standard consumer headphones effectively.
Portability
Ultra-compact design makes it an effortless addition to any mobile audio setup.
Signal Clarity
High signal-to-noise ratio ensures a clean, interference-free listening experience.
Key Specs
DAC Chip
ES9038Q2M
Input Port
USB Type-C
Output Ports
3.5mm Single-Ended, 4.4mm Balanced
Max Decoding
PCM 32bit/768kHz, DSD512
Output Power
130mW@32Ω (PO), 240mW@32Ω (BAL)
Signal-to-Noise Ratio
≥ 122dB (PO 32Ω A)
Total Harmonic Distortion + Noise
<0.0008% (PO 32Ω)
Frequency Response
20 Hz to 50 KHz, curve amplitude varies by 1 dB
Features
- High-performance ES9038Q2M DAC chip for superior audio quality.
- Supports high-resolution audio up to 32-bit/768kHz and DSD512.
- Dual headphone outputs: 3.5mm single-ended and 4.4mm balanced.
- Clean audio output with high SNR and low THD+N.
- Durable and stylish full-metal body with a premium finish.
- RGB indicator displays current sampling rate for visual feedback.
- App control for advanced settings like filters, gain, and channel balance.
- Wide compatibility with various operating systems and devices.
What customers say
Customers consistently praise the FiiO KA3 for its exceptional sound quality, noting a significant improvement in audio clarity and detail across various headphones. Many highlight its robust build and premium feel, suggesting a product that punches above its weight. The device is frequently lauded for offering outstanding value, delivering high fidelity audio performance typically found in more expensive units. Its compact size and powerful output make it a highly regarded portable audio upgrade.
Know before you buy
Yes, the KA3 is compatible with Android, iOS, Windows, and Mac. Please note that you may need a specific adapter, such as a Lightning to USB-C cable for older iPhones, to connect the device.
The 3.5mm port is the standard single-ended connection for most consumer headphones. The 4.4mm balanced output provides higher power output and better channel separation, which is ideal for more demanding audiophile-grade headphones.
For Windows, you will need to download the FiiO USB DAC driver from their official website to ensure full compatibility and high-resolution playback. Mac and Android devices are generally plug-and-play.
The RGB indicator serves as a visual guide for the sampling rate of the audio currently playing. It changes colors to help you confirm at a glance that your high-resolution files are being decoded correctly.
Yes, you can use the FiiO Control app to adjust advanced settings. This includes options for digital filters, gain levels, and channel balance to better suit your personal listening preferences.
As a USB-powered device, the KA3 does draw power from your phone. While it is efficient, using it for extended periods will consume more battery than using standard wired headphones, though the impact varies depending on your phone's battery capacity.
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