Tonewise it is well on par with the seis easy
It also has the neck where the e string is thicker that the g string:-)
also has a zero radiused board:-)
I think it was the first single cut 4 Alan made (dont qoute me though)
the back is beutiful tooo (like my seis)
My problem is ive been very lucky with my seis and mny 4 string headles sei is a bit of a beast!
I traded this bass with a gorgeous mayones 6 string as i had three 6rs at the time , but i also now rarely play 4 strings.
enjoy dude its lovely
I have a ACG preamp in a sei six of mine and its friggin awesome:-)