Topic: Unity Gain on iRiver H120???

[Cheesecadet]

Anybody know anything about this Unity gain that I have seen people mentioning?

I will have a pair the the Church audio cards & his St-9100 preamp and I am wondering what setting anyone else out there might be using in this type of setup?

Any info on Unity gain is much appreciated as well.

Thanks

Ryan in CA

[petur]

When using the iriver with rockbox, the gain you set in dB is the setting of the audio chip, I think the rockbox wiki has some schematic of the audio circuit if you're interested. The ST-9100 has no scale so no idea there...

What's the importance about knowing unity gain? I set my iriver to 10 or 15dB, adjust the ST-9100 to get good levels and leave the rest to the agc-safety code

If you're really concerned, you can leave the iriver at 0dB and only use the ST-9100 gain setting and go manual....

[Roving Sign]

What's the importance about knowing unity gain?...

i think a lot of us prefer to run the preamp to its fullest potential...under the assumption that a properly gained pre will yield a proper line level signal - as well as better S/N from the pre, and less noise from the downstream electronics. (i.e. the H120)

On the JB3 - I just use the 0db setting, and drive it from my mixers RCAs...I can always run gain on the mixer at near max settings...just where you would expect.

Consider a device like the Flying Calf A/D...no level control. Just meters. It's preset to unity gain - same thing...drive it with the mixer.

Doesn't the 9100 have some sort of peak light?

[petur]

In that case set the gain (in RockBox) to 0dB.
In the original firmware the gain numbers are meaningless and iirc 0 does not mean 0dB.