I have both the Don Sachs and the MZ2; both of them are outstanding bargains, but they are really different.
The MZ2 is on the cool side of neutral, amazingly quiet, startlingly lifelike, super resolving and incredible bass. It is quite unique sounding, falling somewhere in between tube and solid state sound.
The Don Sachs is more romantic sounding, more holographic, euphonic, noisier, just a bit less resolving, bass a bit softer and rounder, and overall more in line with “typical” tube sound.
Of course, these are my opinions based on my system, my room, etc. Others may feel differently.
The MZ2 is on the cool side of neutral, amazingly quiet, startlingly lifelike, super resolving and incredible bass. It is quite unique sounding, falling somewhere in between tube and solid state sound.
The Don Sachs is more romantic sounding, more holographic, euphonic, noisier, just a bit less resolving, bass a bit softer and rounder, and overall more in line with “typical” tube sound.
Of course, these are my opinions based on my system, my room, etc. Others may feel differently.