FiiO KA11 USB‑C to 3.5mm DAC Amplifier 32bit/384kHz

The FiiO KA11 is a compact USB‑C to 3.5mm dongle that houses a CS43131 Hi‑Res DAC and amplifier to deliver 32bit/384kHz audio for phones, tablets, and computers.

Small enough to slip into a pocket, the KA11 turns a device’s USB‑C or Lightning port into a high‑quality headphone output. It combines a CS43131 DAC, an op‑amp stage, and a multilayer immersion‑gold PCB to lower noise and raise signal clarity. With support for high sampling rates and enough output power to drive a wide range of headphones, the KA11 is aimed at listeners who want better detail and dynamics than standard phone outputs provide.

How does the KA11 improve everyday listening?

The KA11 replaces a device’s basic digital‑to‑analog path with a dedicated Hi‑Res DAC and amplifier, reducing distortion and increasing signal‑to‑noise. Tracks sound cleaner, with improved microdetail and more stable staging, especially with high‑resolution files and quality headphones.

• CS43131 DAC and op‑amp deliver low THD+N and high SNR for clearer playback
• Supports up to 32bit/384kHz decoding for high‑resolution audio files
• Power output (245mW @16Ω, 200mW @32Ω) to drive most portable headphones
• Multilayer immersion‑gold PCB improves channel separation and reliability

Will it work with my phone, tablet, or computer?

The KA11 is designed for wide compatibility: use the USB‑C connector on Android devices and many modern laptops, or the included adapter for Lightning on iOS devices. It also functions as a simple USB audio device on Windows and macOS, and can be switched to UAC1.0 mode for consoles that require it.

• Plug‑and‑play on most Android phones and computers (USB audio class support)
• Lightning adapter option and app controls for iOS compatibility
• UAC1.0 mode available for low‑latency use with Switch and PS5 (switch in FIIO Control app)
• No bulky external power needed—powered by host device

How portable and durable is the design?

The KA11 emphasizes pocketable convenience with a tiny 44 x 9.7 x 10.5 mm metal body that weighs about 8.5 g. Despite the small footprint, it uses high‑standard components and an immersion‑gold circuit board for reliable performance on the go.

• Compact metal housing for everyday carry and travel
• Lightweight at roughly 8.5 g—won’t weigh down pockets or bags
• Robust internal layout and quality components for long‑term use
• Simple cable/connector interface—no batteries or separate charger

What sound specifications matter for audiophiles?

The KA11 targets measurable audio quality: low distortion, high dynamic range, and very low noise floor. Those specifications translate into quieter backgrounds, cleaner transients, and better detail retrieval across music genres.

• High‑performance CS43131 DAC chip with op‑amp stage for refined output
• THD+N: <0.0006% and SNR: 125 dB for high fidelity
• Noise floor: <1.7 µV for reduced hiss with sensitive IEMs
• 32bit/384kHz sample rate support for high‑resolution playback

Who is this for? The FiiO KA11 suits listeners who want a clear, portable upgrade over built‑in device audio: smartphone users who stream high‑quality music, gamers seeking lower audio latency on supported consoles, and laptop users wanting cleaner headphone output without bulky gear. It’s ideal for anyone who values improved detail, low noise, and the convenience of a pocketable Hi‑Res DAC adapter.