[IDK]

On a scale from 1-10 how much of an Upgrade is the SA6 from the SA1?

 

[jwhitakr]

That's a pretty arbitrary question, don't you think? One person might say "1" and another person might say "5" ... but if you don't get them any more info about what you are looking for in terms of sound quality, you aren't really going to get any clue about how they came up with their "ranking".

Give some more information about what you are looking to learn re: SA1 vs SA6, and then you can expect some helpful responses.