Re: [gear] sound devices 7 series gain

["Dan Dugan" dandugan_1999]

>According to the SD722 page:
>>  Gain: (input dBu to -20 dBFS)
>>  mic (normal gain mode): 25 to 70 dB;
>>  mic (low gain mode): 10 to 55 dB;
>>  line: -6 to 18 dB, 0.1 dB increments
>
>For normal gain mode (or high if you prefer) mic sensitivity is
>-50dBu input for 0dBFS. With current firmware this drops to -47.4dBu
>for 0dBFS.

Perhaps the confusion has to do with talking about peak level vs
average level. If you consider -20 dBFS as the "program level" or "0
VU level" (typical in film and TV work), then at maximum gain the
700-series recorder does indeed bring a -70 dBu input signal to
normal recording level, and that's 70 dB gain.

Or 67.4 dB if the firmware update changed the gain.

-Dan Dugan