In my January 2018 Bass Player review of the Wayne Jones Audio WJBPII preamp and WJ 2x10 passive cab, I described the gear as expensive and eclectic, but also among the best out there. I finished the review with the editorial equivalent of a cliffhanger: “Wayne also has a head in the works — stay tuned for a review.” Little did I know then that the follow-up review I promised would appear in an entirely different publication, but nevertheless, I’m happy to deliver with this month’s review of the WJBA and WJBA2 heads. The design brief for the WJBA was simple: Start with the two-channel hi-fi hybrid preamp that is the WJBPII and mate it to a super-powerful Class D/SMPS power section. The WJBA delivers up to 2,000 watts with its stereo 1,000-watt power section. The WJBA2 is a one-channel variant with a mono 1,000-watt power section in the form of a bridge-able 2x 500-watt power amp. Given that the WJBA and WJBA2 feature the same circuit as the WJBPII I’ve already reviewed, a