Thank you for the names for my Theorem Pythagoras and Archimedes is better than Fermat
I bought Theorem in copper finish , because I wish with different casing material can have better SQ
Like my Ko Jo Amp with brass casing , as my diy friend took out the pcb board from the brass casing SQ was so thin and flat .
Casing material is very important
Later on I will keep the good ones and sell the less good ones
I love SQ from Theorem as DAC AMP or through the line out for my Abyss headphones