Whenever I see the large number of stand alone phono preamps that are available, and their huge range of prices,
Phono Preamps, I have to wonder who really tries even 5% of the available choices?
A phono preamp must do two things. One is to amplify the very weak signal from a phono pickup cartridge up from about 4 or 5 mV (from a moving magnet cartridge) to about 100 mV, and the other is to alter the tonal balance (equalize) of the signal recorded in the LP groves so that it sounds properly balanced (known as RIAA equalization). As far as I know, ALL phono preamps do this. Just how well is a matter of endless debate, but for most, the differences are minor.
My own experience is much more limited. My first stereo receiver, purchased in 1972, came with a phono preamp section built-in. Nearly all audio gear did the same until much later. At that time, I never had even known of stand alone phono preamps. My first AV receiver, bought in 2000, also had a phono preamp in it, although they were becoming less common by that time. In 2009, I switched to a different receiver which lacked a phono preamp. I bought an Audio Technica PEQ3 for about $50 (US). I still use it now.
I see no reason to worry about the possibly minor differences between phono preamps, nor am I willing to spend money on this to find out. (Note to the OP, the phono preamp I have is no longer available in the USA, but apparently is available in Japan. It might be available in Australia.)