Is the ZMF Tessidera worth the upgrade from the HiFiMAN HE 600?
Verdict
Meaningful upgrade
The ZMF Tessidera scores 8.2 points above the HiFiMAN HE 600. That's a real improvement, though not the kind you'd notice on every track. The gains are concentrated in sound (8.0 to 9.2). Worth checking: weight goes 389 g to 570 g and driver size goes 100 mm to 80 mm. That costs $1401 more, or about $171 per point of score - steep unless the specific gains above are ones you care about. Worth doing if you're replacing anyway; harder to justify as a pure upgrade if what you have still works.
What actually changes
Sub-scores both products have, on the same 0-10 scale. Bars extend right for a gain, left for a loss.
- Sound8.09.2
- Value7.57.5
Spec differences
Only where the two genuinely differ - everything they share is omitted.
| Spec | HE 600 | Tessidera | Direction |
|---|---|---|---|
| Weight | 389 g | 570 g | |
| Driver size | 100 mm | 80 mm | |
| Driver | 100 mm planar magnetic | 80 mm planar magnetic | |
| Frequency response | 8 Hz - 65 kHz | 20 Hz - 20 kHz |
About this verdict
Direction matters here: this page answers "HE 600 to Tessidera". The other direction is a separate question with a different answer. Scores blend published review verdicts across over-ear and shift as new reviews land, so a marginal call today may not be one next quarter.