FiiO
KA1 USB DAC Headphone Amplifier
Best portable upgrade for mobile listeners seeking high-resolution audio quality.
Meet the FiiO KA1 Compact DAC/AMP, a powerful device engineered to significantly boost your portable audio experience by bypassing internal device processing. Featuring the ES9281AC PRO DAC chip, this unit is incredibly lightweight and small, making it ideal for on-the-go use. It supports high-resolution audio up to 384KHz/32bit and DSD formats. Connect easily via Type-C or Lightning and enjoy music through the standard 3.5mm headphone socket, handling impedances from 16 to 300 Ω with impressive clarity and power for its size.
$69.00
Owner Satisfaction
4.6
/ 5
Category Rank
263
/ 766
#263 in Headphone Amplifiers
Price vs Category Average
-95%
Below average
DAC Chip
9281
/ ESAC PRO
Who it's for
- Audiophiles seeking high-fidelity sound from mobile devices
- Commuters needing a lightweight, pocketable audio upgrade
- Budget-conscious listeners wanting premium sound on a small investment
Who should skip it
- Owners of power-hungry, high-impedance studio headphones
- Users preferring tactile volume control without touching their phone
- People worried about long-term durability of fixed cables
Performance breakdown
Portability
Ultra-lightweight design disappears into any pocket or travel bag effortlessly.
Audio Fidelity
ES9281AC PRO chip delivers crisp, high-resolution sound far beyond standard outputs.
Drive Capability
Handles a wide impedance range with surprising authority for its size.
Connectivity Versatility
Seamlessly bridges the gap between modern mobile devices and wired headphones.
Build Quality
Minimalist construction feels durable enough for daily, rigorous on-the-go use.
Ease of Use
Plug-and-play simplicity makes high-fidelity audio accessible to every listener.
Key Specs
DAC Chip
ES9281AC PRO
Supported Sampling Rate
Up to 384KHz/32bit and DSD64/128/256
Output Power (32Ω)
45mW (THD+N<1%)
Impedance Adaptation Range
16 to 300 Ω
Dimensions (Fuselage)
Approximately 40mm x 15mm x 8mm
Weight
About 10g
Signal-to-Noise Ratio
≥ 114dB (32 Ω A)
Output Impedance
<1.5 Ω (load 32 Ω)
Features
- Compact DAC/AMP design for portability
- Upgrades audio quality using ES9281AC PRO chip
- Supports Type-C Android and Lightning connections
- High-resolution audio up to 384KHz/32bit
- Dedicated LED indicators for sample rates
- Firmware upgradable via USB connection
- Standard 3.5mm headset output socket
- Ultra-lightweight design at about 10g
What customers say
The FiiO KA1 is celebrated as an exceptional value portable audiophile upgrade. Customers consistently report a significant boost in sound quality over standard device outputs, praising the enhanced clarity and detail retrieval provided by the integrated DAC chip. Its ultra-compact, durable metal design makes it ideal for on-the-go listening. The plug and play functionality ensures a seamless experience across mobile and computer platforms. While some users observe increased battery drain and warmth during long sessions, and note it may not power very demanding headphones, the KA1 remains highly recommended. It delivers a substantial, affordable elevation to the mobile listening experience.
Know before you buy
Yes, the KA1 is available in both USB-C and Lightning versions, allowing you to connect it to most modern smartphones, tablets, and computers.
The KA1 is designed to handle headphones with an impedance range of 16 to 300 Ω. While it provides impressive power for its size, it is best suited for portable or mid-range headphones rather than demanding, high-end audiophile gear.
The device features a dedicated LED indicator light that changes color based on the sample rate of the audio file you are playing, providing a quick visual confirmation of your stream's quality.
No, the KA1 is a passive device that draws power directly from your connected smartphone or computer, so you never need to worry about charging it separately.
By bypassing your device's internal audio processing and using the high-performance ES9281AC PRO DAC chip, the KA1 will provide a cleaner, more detailed sound with significantly less noise than a standard headphone jack.
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