Table 1 Comparison characteristics of the hearing aids
Characteristics | P02 | Concerto basic | Clip-II™ |
|---|---|---|---|
Gain adjustable by pre-set options or user controls | Programmable | Screw trimmer | Screw trimmer |
Electroacoustic specification (IEC118–7 2 cc. Coupler) | Digital | Digital | Digital |
Maximum output (OSPL90) 118 ± 4 dBSPL | 123 dB SPL | 129 dB SPL | 129 dB SPL |
Maximum output at 1 KHz (OSPL90) 114 ± 4 dB | 117 dB SPL | 121 dB SPL | 121 dB SPL |
Maximum FOG (45–55 dB + 5 dB) | 66 dB SPL | 67 dB SPL | 67 dB SPL |
Maximum FOG at 1 KHz (42 + 5 dB) | 63 dB SPL | 64 dB SPL | 64 dB SPL |
Basic frequency range 200–4500 Hz | 573–4400 Hz | 100–3990 Hz | 130–3690 Hz |
Total dynamic distortion 500 Hz < 5% | 0.6% | 2.6% | NA |
Total dynamic distortion 800 Hz < 5% | 3.8% | 2.1% | 2.1% |
Total dynamic distortion 1600 Hz < 2% | 0.4% | 0.1% | 0.1% |
Equivalent input noise level < 25 dB SPL | 31.4 dB SPL | 24 dB SPL | 24 dB SPL |
Powered by zinc-air or rechargeable | Rechargeable Lithium-ion | Zinc-air models | Zinc-air models |
Battery current | 11.8 mA | 0.65 mA | 0.65 mA |
Maintenance | Charged by electricity for 3 h every 3–4 days | Changing the battery every month | Changing the battery every month |
Price | Estimated 100 USD | 300 USD | 300 USD |