I have done a number of 3 way tests on 45 vs 78 vs quality CD recordings. The 45s always come in last. In fact on my system, a top end system, they just sound "bad" when compared to the 33 LP. To me it is just a gimmick to sell records.
Do 45 rpm 12" LPs really sound better than 33 rpm?
Increasingly, one can buy 12-inch 45 rpm LPs. Theoretically, they provide a wider dynamic and frequency range, but I come across a strange effect... Yes, the bass strings seem to be tightened stronger, but in general ... Imagine you have two cars with a power of 250 hp, but one is equipped with an honest atmospheric V6 or V8, and the second has 2 liters turbo.
Tell me, is it just my impression? Or maybe I need to change the cartridge or settings (for example, impedance) of the phono preamp?