I'm sure someone more technical can explain this better but a phono preamp is taking a very small signal and magnifying it many times and also applying a riaa equalization to the signal. No small feat and how well it is done is definitely going to affect sound quality.
You don't have to spend a fortune for an outboard phono stage, the new Parks Puffin punches well above its weight at $400. My $1000 phone stage is for sale now after getting the Puffin.
You don't have to spend a fortune for an outboard phono stage, the new Parks Puffin punches well above its weight at $400. My $1000 phone stage is for sale now after getting the Puffin.