HIFIMAN Ananda Nano

The HIFIMAN Ananda Nano is an open-back planar magnetic headphone using the company's Stealth Magnet design and a nanometer-thickness diaphragm. It features a single-piece metal headband, asymmetrical bevelled ear pads, and a 3.5mm cable connection with a supplied 6.35mm adapter.
| Frequency response | 5 Hz – 55 kHz |
| Sensitivity | 94 dB |
| Impedance | 14 Ω |
| Weight | 419.6 g |
As stated by the manufacturer — not community data.
A dongle is enough
A phone's own output runs out early; a small USB DAC/amp gives it full level and headroom.
| Needs, for 110 dB peaks | 0.75 V · 40 mW |
| Phone or laptop (≈0.70 V, 20 mW) | Runs short |
| Dongle DAC/amp (≈2.0 V, 120 mW) | Enough |
Worked out from the stated 94 dB/mW and 14 Ω — not a listening test. DAC/amps on the shelf →
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