I'm not gonna get into the core of this discussion you're having with people here, but with regards to EQ, EQ is not a "70's idea", it's a very useful tool which can improve every speaker out there, both in RoomEQ and also Anechoic EQ of the speaker (using Amir's measurements).....EQ is definitely a positive. You do loose some headroom in the amp by having to run a negative preamp to cover the boosts in your EQ Curve, but most of the time it'll probably only be in the range of -5dB.....there's enough headroom in good amps & DACS to handle that without negative effects. Anyway, this is just a point re EQ that you raised, not the main point you're discussing with others here....so I'll let you continue with your main discussions with others on here.
Six (6) dB is = to 4 times of amplitude.
On binary scale (DAC) you turn a 16 bit into a 14 bit DAC.
On analog power, its 1/4 of whatever your power Amp. outputs.
I do not see guys buying a 14 bit DAC, or pay for an X Watts power amp, but compromise with a 1/4 of it.
Regardless of Dynamic headroom, EQ has more downsides. Why using one if you can buy a linear component and avoid it?
Room EQ, Speaker EQ, just EQ...they all have those problems. You are good with it, I'm not.
Tried it with a SONY TA-2000ESD. It has a 91 bands parametric EQ with 0.1 dB att. and a sharp Q as 0.5 up to 20. 3 Fr. to set. As good as it gets.
Any attempt using it sounded worse than go direct.