HIFIMAN SUNDARA vs Sennheiser HD 820
Better figure, where one is clearly better
| HIFIMANSUNDARA | SennheiserHD 820 | |
|---|---|---|
| Overview | ||
| Released | February 2018 | 2018 |
| Sound | ||
| Type | Over-ear | Over-ear |
| Noise cancelling | No | No |
| Driver size | – | 56 mm |
| Back | Open | Closed |
| Impedance | 32 ohms | 300 ohms |
| Bluetooth codecs | None (wired) | None (wired) |
| Drivers | Planar magnetic with NEO "supernano" Diaphragm (NsD), 1–2 microns thick; 6 Hz – 75 kHz; sensitivity 92 dB. The 2018 original was listed at 37 ohms, 94 dB and 372 g | 56 mm ring radiator dynamic transducers, closed-back, behind convex Gorilla Glass reflectors that direct rear sound into damped chambers; 12 – 43,800 Hz (–3 dB), 6 – 48,000 Hz (–10 dB); 103 dB SPL at 1 kHz (1 Vrms); THD ≤ 0.02% (1 kHz, 100 dB SPL); diffuse-field equalised; max. 500 mW long-term input power |
| Battery | ||
| Listening time (maker's claim) | No battery (wired) | No battery (wired) |
| Design | ||
| Weight | 342 g (better) | 360 g |
| Headphone cable | Yes | Yes |
| Fit and ear tips | Over-ear, open-back; metal headband with a weight-spreading headstrap and two adjustment blocks; angled, bevelled ear pads (new pads in the 2020 revision, per RTINGS); matte black anodised aluminium cups | Over-ear (circumaural), closed-back; contact pressure approx. 3.8 N ± 0.3 N; attenuation up to 25 dB |
| Works with | Detachable 1.5 m crystalline copper cable with 3.5 mm plug and 3.5 mm connectors at each cup; 3.5 mm to 6.35 mm adapter | 3 m silver-plated OFC cables, balanced, shielded, para-aramid reinforced, with gold-plated 6.35 mm unbalanced or 4.4 mm balanced plugs; the maker also lists an XLR-4 balanced connector, but no XLR-4 cable is in the box |
| In the box | Headphones, 1.5 m cable (3.5 mm plug), 3.5 mm to 6.35 mm adapter, ear pads (fitted) | HD 820 headphones, cable with 6.35 mm plug (unbalanced), cable with 4.4 mm plug (balanced), instruction manual, storage box, microfibre cloth |
