So, if anyone is interested, out of the nine LiveGold presets I have commandeered so far, I only left the bypassed drive block in three of them.
Powerball Engl
Dweezil's Bassman
StratSRV 1x15 Vibroverb
The StratSRV actually has two drive blocks, but one is bypassed. A Microboost drive block remains active, the settings are really low. I didn't change this drive at all.
I did try the test again, and even had my son give a listen. I made two copies of each preset, removed the drive block from one. With the two presets side by side, I was easily able to switch back and forth. He said he could hear a tiny difference, but couldn't put his finger on exactly what it was.
I suppose that now, I do have a vested interest in whether I hear it or not. Consciously or subconsciously. Because I now have a need to be right, whether I really hear the difference, or whether I simply have convinced myself I hear the difference!
I could go so far to say that they even feel a tiny bit different to play whether these particular presets have the drive block or not. But that would open up a whole new can of worms. And it'd give Greg Ferguson an opportunity to add another prick comment how I must have magic fingers now and I'm just saying bullshit for the benefit of clickbait.
One tangible thing we did notice during our little experiment was that the unit uses around 5-6 percent more cpu when a drive block is present and bypassed, then when there is no drive block at all. Maybe the experts can weigh in on that. If a bypassed drive block is basically behaving as a shunt, why is it using around five percent more cpu to do so? Does it take that much cpu to NOT have an effect on sound?
I suppose now I'm psychologically invested in these drive blocks (that I didn't want in the first place), so I'm just leaving the damn things in there for these three presets. The LiveGold presets are so efficient that 5 percent more usage doesn't matter anyway.
Rock on!