| UHA-6S | UHA-6 | UHA-4 | UHA-3 | |
|---|---|---|---|---|
| USB Input | 16-bit/48kHz | 16-bit/48kHz | 16-bit/48kHz | 16-bit/48kHz |
| Analog Input |  |
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| Optical Input | 24-bit/96kHz | |||
| Automatic Input Selection | |
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| Adjustable Gain | +6dB/+18dB | +6dB/+18dB | 0dB/+18dB | |
| Digital-to-Analog Converter (DAC) | Cirrus Logic CS4398 | Cirrus Logic CS4398 | Texas Instruments PCM2706 | Cirrus Logic CS4344 |
| DAC Output Filter Op-amps | OPA211A | OPA211A | ||
| Output Driver Op-amps | AD8610 | AD8610 | AD8610 | AD8512 |
| Socketed Op-amps | |
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| Rechargeable Battery | |
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| Battery Life | 30 hours (analog) 12 hours (optical) |
35 hours | TBD | 18 hours |
| USB Charge Disable Switch | |
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| Dimensions | 2.1" x 4.0" x 0.9" | 2.1" x 4.0" x 0.9" | 2.1" x 3.2" x 0.9" | 2.1" x 3.2" x 0.9" |