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The HDR 180 is also equipped with balance and automatic level controls. The former provides for right/left volume adjustment while the latter for improved speech intelligibility as well as to ensure that the headphones always reproduce at optimum audio levels.
This wireless headphone system utilizes Kleer uncompressed digital wireless audio transmission and can serve up to four pairs of headphones.

| Impedance | 32&ohms; |
|---|---|
| Frequency Response (Headphones) | 18Hz - 21,000Hz |
| Sound Pressure Level (SPL) | 110dB |
| THD - Total Harmonic Distortion | <0.5 % at 1kHz |
| Ear Coupling | circumaural |
| Weight | Approx. 7oz (204g) (without batteries) |
| Charging Time | Approx. 16 Hours |
| Operating Time | Approx. 24 Hours |
| Power Supply | Two NiMH-accu type AAA, 1.2V, 600mAh |
| Transducer Principle (Headphones) | Open, dynamic |
