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The FiiO JA11 combines a compact DAC and headphone amplifier in a single dongle, designed to upgrade 3.5mm headphones with high-resolution audio. It handles PCM up to 384kHz/32-bit and supports DSD128, a level of decoding rarely found at this price point. A built‑in DSP enables customizable PEQ curves, with access to user-shared and recommended settings for fine‑tuning sound. The aluminium‑magnesium body is anodised for a premium feel and anti‑interference performance.
| Supported formats | PCM up to 384kHz/32-bit, DSD128 |
| PEQ | Built-in DSP with customizable curves; access to user/shared curves |
| Microphone input | Supports mic input and CTIA/OMTP inline controls (device-dependent) |
| Construction | Aluminium-magnesium alloy with secondary anodizing; anti-interference design |
| Wiring | High-purity oxygen-free palladium-plated copper; low impedance |
| Cable sheath | Dual-layer silicone and braided yarn |
| App control | FIIO Control APP for presets, PEQ sharing/downloading, UAC switching, more granular volume |
| Compatibility | Android, iOS, Windows, macOS |