It would appear, from having searched around a bit, that this model is now being fitted with the Fishman system, and not the E-Sonic. Why..? No clear reply so far, but the E-Sonic does not have unanimous approval from buyers, apparently. Most vendors are up-dating their sites, but some are slower than others. Your acquisition is fine, and is missing nothing, unless you specifically bought it for that E-Sonic version, now out of production.