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| Specification | Details |
| Model | FiiO BTR11 |
| Product Type | Bluetooth Receiver & Portable Headphone Amplifier |
| Bluetooth Version | Bluetooth 5.3 |
| Bluetooth Chipset | BES2700IHC |
| Amplifier Chipset | HT97220 |
| Supported Codecs | LDAC, AAC, SBC |
| Headphone Output | 3.5mm Single-Ended Jack |
| Output Power |
L+R ≥ 45mW + 45mW (16Ω, THD+N < 1%) L+R ≥ 30mW + 30mW (32Ω, THD+N < 1%) |
| Supported Impedance | 8Ω – 100Ω |
| Frequency Response |
20Hz – 20kHz (damping < 0.5dB) 20Hz – 45kHz (damping < 2.3dB) |
| Signal-to-Noise Ratio (SNR) | ≥ 101dB (A-weighted) |
| THD+N | < 0.008% (1kHz/-3dB @ 32Ω) |
| Output Impedance | ≤ 0.5Ω |
| Microphone | Built-in Omnidirectional Microphone |
| Battery Capacity | 120mAh Lithium Polymer |
| Battery Life |
Up to 15 hours (AAC/SBC) Up to 8.5 hours (LDAC) |
| Charging Port | USB Type-C |
| Charging Time | < 1.5 hours |
| Dimensions | Approx. 55 x 19 x 14.6 mm (including clip) |
| Weight | Approx. 13g |
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