| Audio Codec Comparison Table |
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| VIA |
VIA manufactures both codecs and complete audio controllers. Their controllers (Envy24 series and Tremor) require an external codec and usually the motherboard manufacturer that choose to use a VIA external controller also pick a VIA codec. Since VIA audio controllers got some popularity in the past, we are including their main specs on a separated table. VIA use names starting with “VT” for their codecs. 
click to enlarge
Figure 4: VIA Envy24PT controller (on the right) using a VIA VT1618 codec (on the left).
Model | Channels | Input Resolution | Output Resolution | Input Max. Sampling Rate | Output Max. Sampling Rate | Input SNR | Output SNR | VT1612A | 2 | 20-bit | 20-bit | 48 KHz | 48 KHz | 93 dB | 88 dB | VT1613 | 2 | 18-bit | 18-bit | 48 KHz | 96 KHz | 85 dB | 82 dB | VT1616 | 5.1 | 20-bit | 20-bit | 48 KHz | 48 KHz | 85 dB | 85 dB | VT1617 | 5.1 | 20-bit | 20-bit | 48 KHz | 96 KHz | 85 dB | 95 dB | VT1618 | 7.1 | 20-bit | 20-bit | 48 KHz | 96 KHz | 86 dB | 83 dB | VT1708 | 7.1 | 24-bit | 24-bit | 192 KHz | 192 KHz | 97 dB | 93 dB | VT1708A | 7.1 | 24-bit | 24-bit | 192 KHz | 192 KHz | 97 dB | 93 dB | VT1708B | 7.1 | 24-bit | 24-bit | 192 KHz | 192 KHz | 98 dB | 95 dB |
Model | Channels | Input Resolution | Output Resolution | Input Max. Sampling Rate | Output Max. Sampling Rate | Envy24 | 7.1 | 24-bit | 24-bit | 96 KHz | 96 KHz | Envy24HT | 7.1 | 24-bit | 24-bit | 192 KHz | 192 KHz | Envy24HT-S | 7.1 | 16-bit (AC97)
24-bit (I2S) | 16-bit (AC97)
24-bit (I2S) | 48 KHz (AC97)
192 KHz (I2S) | 48 KHz (AC97)
192 KHz (I2S) | Envy24GT | 5.1 | 16-bit (AC97)
24-bit (I2S) | 16-bit (AC97)
24-bit (I2S) | 96 KHz | 96 KHz | Envy24MT | 2 | 24-bit | 24-bit | 192 KHz | 192 KHz | Envy24PT | 7.1 | 16-bit (AC97)
24-bit (I2S) | 16-bit (AC97)
24-bit (I2S) | 48 KHz (AC97)
192 KHz (I2S) | 48 KHz (AC97)
192 KHz (I2S) | Tremor | 5.1 | 16-bit (AC97)
24-bit (I2S) | 16-bit (AC97)
24-bit (I2S) | 48 KHz (AC97)
192 KHz (I2S) | 48 KHz (AC97)
192 KHz (I2S) |
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