The general program, if left at its default value, might not have used as aggressive settings as the SiN program to begin with in the Neural Noise reduction max value settings. On top of that, its gain curve is not slightly boosted like the SiN program is.
Below is an example of my default settings for General and SiN on the Intent 1 in simulation:
The first screenshot below is the General program MoreSound Intelligence screen:
The next screenshot below is the SiN program’s MoreSound Intelligence screen:
You can see that the General program, for my personal hearing loss, defaults with 0 dB NNS for Easy and 8 dB NNS for Difficult. But the SiN program defaults to 2 dB NNS for Easy and 10 dB NNS for Difficult. Also note that it’s not even the max available of 6 dB NNS for Easy and 12 dB NNS for Difficult for the Intent tier 1. So there’s even more room for Neural Noise Suppression improvement left on the table and is not used in my scenario. So in this case, if I allow Genie 2 pick out these default values, my Intent 1 is only performing at the Intent 2 level and I could have saved money buying the Intent 2 instead if I want. But of course I can just change my default settings to the max Neural Noise Suppression value to get the most out of what I pay the Intent 1 for.
Also note that in the General Program, the Easy Classification is Very Simple, Simple and Moderate, while its Difficult Classification is Complex and Very Complex. On the other hand, in the SiN program, the Moderate scenario gets moved to the Difficult Classification, signifying that you need more help in SiN than in General.
So if you want your General program to perform as well the SiN program, you should mirror the parameter settings in the SiN program to make the Neural Noise Suppression as well as the Environmental Classification more aggressive like how the SiN program has it.
Beside these settings, the other difference is in the gain curves in the Fine Tuning section. The SiN program has its gain curves slightly boosted compared to the General gain curves, to help you hear everything a little bit louder to begin with. So let’s say that you match the parameters of the SiN program in your General program, if you can just leave the General program gain curves alone but when you’re in noisy difficult environments, you can just increase the volume 1 click up (2 dB gain) if you feel the need to hear louder, and it should roughly match the SiN gain curve slight boost anyway.