One of the frustrations with dealing with the Neuro Interface for the Gemini, Mercury and Lunar is that their manuals were last updated in Feb 2016 and doesn't cover much of the Neuro desktop. The manual was written for version 1.06, we are currently on 1.10. A lot has changed and unfortunately the manual hasn't.
The most fundamental issue is that the Neuro desktop is barely mentioned in the manual and yet it's largely how we are going to view / control this app beyond its stock pre-sets. There is nothing in the manual that remotely looks like this interface and that's baffling for any new user. There's no device settings help in the Neuro desktop app either.
The EQ section is now wrong in several areas. There is no Q control any more for the 4 band EQ and can't be used as shelving bands (HPF and LPF). However, the fixed Q point of the current firmware are pretty much spot on for this type of effect.
The details of how the Mix control works is no longer true, pure dry is now at 12-noon and not far left. In fact how the mix control currently operates is undocumented, as are the relationship between Channel 1 and Channel 2 and how it mixes between them.
There's no documentation on the Channel 2 settings at all, specifically Offset, Mix invert and Trem invert. There's also no documentation on how the Expression pedal is assigned / works with this particular interface. You kind of have to work this out for your self or contact support and burden them with it. This really should be covered in the manual.
I still don't understand why there are 8 knobs at the bottom of the interface. They correspond to the physical knobs on the device, but I can't seem to get them to do anything. All I know is they go green if I change them from the default 0 value.
Most of the current manual seems to cover the Phone Neuro app, which is fine but that's been updated several times and looks nothing like this any more...in fact it operates differently too. The 2 channel routing has changed a lot since this manual was written, currently there are 10 options, the manual only covers 5 of these.
I appreciate that this is an old series of devices and it's limited by hardware / current firmware and the legacy support of it's Neuro Cloud patches. Assignable controls would be top of my wish list. Secondary are the 128 patch memory and midi CC patch changing. I appreciate that it's nearly 7 years old as a product and probably very low of Source Audio's "to-do" list. However, I think that the manual really should be re-written and kept up to date.
After saying all of this, it is by far the best Modulation pedal I've owned, and I've owned quite a few. Sonically and features wise...it's the best there is in my humble opinion. It's 4 band EQ and low retain control take this modulation pedal to a whole new level of apply ability as a bassist. It's manual is painfully out of date and the instructions are quite cryptic in many places. For instance, the manual's "Resonance" control is now called Feedback in the Neuro App....not helpful...however...there is nothing else that comes close to it on the market and it's currently best of breed. It's just taken me a year to find those particular settings.