AudioChainsDB
Superlux

HD330

headphones

$45

Used market: $35*

Manufacturer datasheet

Specifications

3 of 7 values have a recorded source
Connector
3.5 mm, 3 m coiled single-sided cable·
Form Factor
Over-Ear·
Is Closed Back
no·
Impedance ohms
150✓
Transducer Type
Dynamic·
Detachable Cable
no·
Sensitivity dB mW
96✓

Expert Audio Engineering Commentary

Tonal Profile

The odd one in the budget line: 150 Ohms where its siblings sit at 32. That is the interesting number here — at 96 dB/mW and 150 Ohms, 100 dB needs 2.5 mW, or 0.61 V, which a phone will manage but a weak laptop jack will not with headroom to spare. Power handling is only 100 mW, the lowest in the range.

* Estimated with the depreciation fallback (~78% retained value). · checked on 8/5/2026