It's many years since I owned a 501, but from I can remember the 501 was neither warmer or colder than the Delos.
Just different.
For me the reason that the 501 was a little bit ( not much ) warm was that it softened the atttack of the transients ( in some way like a Benz ).
The Delos is a little bit warm WITHOUT softening the attack and IMHO a WAY better cartridge than the Shelter 501.
Just different.
For me the reason that the 501 was a little bit ( not much ) warm was that it softened the atttack of the transients ( in some way like a Benz ).
The Delos is a little bit warm WITHOUT softening the attack and IMHO a WAY better cartridge than the Shelter 501.