And what exactly an upgrade is?
For 650: owners, a similar tuning with better technicalities and more bass?
For 660S owners, a similar tuning with better technicalities more bass?
For 600 owners, a similar tuning with better technicalities and more bass?
Maybe a tuning that combines the three of them?
Maybe a totally different tuning?
Maybe following a specific target curve like Harman?
What an upgrade is?
What are you guys exactly want?
Hey I am taking to you Jim, how you like it?
Hey Peter, what is an upgrade for you?
Maybe John will tell us?
Well?
Silence....
This is a new Headphone with different tuning, different sound signature, a new personality and character.
Get along with it.
For 650: owners, a similar tuning with better technicalities and more bass?
For 660S owners, a similar tuning with better technicalities more bass?
For 600 owners, a similar tuning with better technicalities and more bass?
Maybe a tuning that combines the three of them?
Maybe a totally different tuning?
Maybe following a specific target curve like Harman?
What an upgrade is?
What are you guys exactly want?
Hey I am taking to you Jim, how you like it?
Hey Peter, what is an upgrade for you?
Maybe John will tell us?
Well?
Silence....
This is a new Headphone with different tuning, different sound signature, a new personality and character.
Get along with it.