https://www.stereophile.com/content/shindo-aurieges-equalizer-amplifier-measurements
https://www.stereophile.com/content/abbingdon-music-research-ph-77-phono-equaliser-measurements
https://www.stereophile.com/content/vitus-audio-mp-p201-masterpiece-series-phono-preamplifier-measur...
https://www.stereophile.com/content/aesthetix-rhea-phono-preamplifier-measurements
Btw, @lewm in that ocassion along the chart of the unit I own were the the charts of the Halcro and Dartzeel phonolinepreamps too where both was not even close. Dartzeel was " terrible ".
Here that Vitus has a price tag of 60K big dollars and this LAMM set you back around 75K+ and you need additional IC cables to connect it to the LAMM line stage:
http://www.lammindustries.com/PRODUCTS/LP1spec.html
Regards and enjoy the MUSIC NOT DISTORTIONS,
R