I am collecting amps to tri-amp my LE15A/375/075 rig. A friend said he had a Urei 6320 I could have for $150. The price seems ok and is aligned with my budget (and it's super clean). Looking at the manual I see that the max THD from any power level is less than 0.1%. That doesn't seem great. I would use the 6320 to power the 375 and would be running it way under it's max. Is JBL just being conservative?
http://www.jblproservice.com/pdf/Vin...6260manual.pdf