I just can't sit by while Lane's BS is perpetuated, even by someone who innocently believes it is true.
Gain settings are the same on every amp, pre-amp, board, channel strip, recording unit, effect pedal - you want to run it as hot as possible without distortion for optimum S/N ratio, dynamics, tone, etc. You run it up to clipping, and back it off a few notches, as bassplayers have done since variable gain was introduced several generations ago.
Your quote ('the gain structure is very different') is from a posting by Lane to me on the Eden forum years ago when I was complaining about how screwed up the amp I received was, and has been repeated ad nauseum to try to excuse their BS and to diffuse ridicule of their faulty design, and try to not have to further warranty their product from the litany of continuing users complaints after their multiple feeble attempts at actually fixing the problem. It will remain perhaps one of the worst product launches in bass playing history; certainly the worst thing that I have ever been involved in in my 39 years of bass playing; the most insulting, the most I have ever been mislead and lied to, and the longest I have ever had to wait for service which never actually came (just more lies) by a musical equipment manufacturer, and that for one of the most expensive amps I have ever purchased.
There is nothing different about the 1205 gain structure, except the design of the amp is ******. You can't set the gain on that imbecilic contraption because half of it is held back in anticipation of you implementing the turbo boost, and both dynamic tone boost (or whatever they're called) buttons, which yields the most horrid bass sound in the history of the world, and one which mankind has not yet found a musical use for (thankfully). Otherwise, you are sitting there with a 30dB pad on, not getting the proper S/N ratio, dynamics, sound, the ability to get the compressor to light up, getting anything in the two separate FX loops to ramp up to anywhere near unity gain (btw, be prepared to buy two sets of effects if you buy that amp; the FX loops are not global - channel 1 is for channel one, channel two is only for channel two) or getting max power out of the amp section. I repeat, my 18 volt Bartolini preamp, totally maxxed out, all tone controls on full, both pickups, with me SLAMMING all 6 strings of my bass could barely get the gain light (the green one) to blink, let alone anywhere NEAR approach clipping; push the boost buttons, and you're solidly in the red. It's useless, unless you actually LIKE the sound with those three buttons in, and plan on using it all the time; I'd certainly like to see a show of hands on that, or how diplomatic Tom Bowlus could be with his best legalese upon hearing that amp with those buttons pushed! The one I played last week had all of the identical problems to the one I first unboxed in 2005, except the shutdown explosion was now about 50 dB quieter than the one I had.
Oh, and the rack ears fit.
The rest of it, the important part, was still ******.
Cheers,
Cameron