Some reviewers say the A30 has more dynamic punch, better bass, maybe a bit warmer on top.. Can some of it be?
Maybe just with harder to drive headphones?
Because the crowd that finds this content interesting wants to hear that. If you were to go and say that both sound the same, then you'll get comments telling you how boring of a reviewer you are and how you have no soul. These are the comments I saw on topping l50 videos that did not say this type of crap.
These guys make their living by telling you that there are better Sparkles, better transients, this is more warm than that.
As we've already stated numerous times, these guys cannot pick an amp out during an ab-test. If it sounds so different, they'd easily be able to tell which amp is which. These guys even go as far as to say the cable matters, some will tell you other insane stuff matters. Lifting the cable off the ground, having a unicorn poster, etc.
It has long been a Hallmark of the audiophile world to have extremely subjective descriptions of things to sell products.
You can put the same amp into different housings and they'll tell you they sound different.
When it comes to marketing, you don't Market necessarily what the product does, you actually just Market what people want to hear. The audiophile world people want to hear that each amp is unique and special and can bring out new nuances in their music every time they upgrade. Just go onto headfi. Every year the company produces a new product, it's significantly better than the old one to the ear. In 2015, the flagship product was amazing and sounds great, and then 2021 now the new flagship is 10 times better than the old flagship. But wouldn't that make the old Flagship terrible, why was the old Flagship regarded as great if audibly, it didn't do the sound tracks justice?
It's very hard to sell something on scientific data that isn't getting audibly better, as we've covered on this forum, it's scientifically impossible to tell two good amps apart. So I can't sell on science. So my best strategy is to say the science doesn't matter, and sell you on subjective sparkle words. This way, you can't measure my claims and I can keep selling you new products every few years talking about how great the dynamic punch is, how great the transients are, etc. And each year, I'll use new marketing speak to tell you how good it is.
If I told you a gtx 3090 is better than a 2080ti purely because it has "better colors" with no measurements, people would freak out. Because that community accepts scientific testing and measurements and the products do get measurable better easily. In audio, not so much, so marketing speak is easier to use to sell.
It even happens with the stock market on YouTube, You'll see people say that XYZ stock is going to the Moon, despite the company having zero revenues and no reason to go up. But that's what certain people want to hear so that content exists for people that need to hear that their favorite stock is going to go up 5, 10 x for no good reason. You can find content on YouTube that tells you that the Earth is flat, just because someone says it on YouTube doesn't make it real.