That was just a subjective review with no measurements taken on the amp's preamp and/or power amp output so you can't assume Yamaha had "fixed" the pre out related issues Gene commented on in the AH review. I do agree with ADTG, that for real world use, it should be fine, but it you intend to use it with external power amp, then the higher series are highly recommended, or at least aim for a power amp that offers higher gain than the typical 28-29 dB.