I'd keep both the amp and preamp, but make sure whoever does the work does not use parts that will alter the sound. The 33x series amps are hard to beat.
@fixedincome may I ask where you had your 380s refurbished? thanks!
I just got my 380s refurbished and I am very happy!
@fixedincome may I ask where you had your 380s refurbished? thanks!