I thought his model was an S version? Basically the chips were changed out and they completely bypassed the amp section for a much cleaner signal. With the S mod they also give you an extra LO which is for balanced amps. I'm assuming they also apply the RWA mod as well to bring the impedance down?
S version are not balanced but b version yes , so s version just had a higher quality line out connector.
Edited by stvc - 11/10/13 at 6:32am