Its main disadvantage is that it does not have the simulations that other models of the company have, which also have a lower cost (e.g. micro cube). Also, the company sells it without a power supply for 220 V AC, which is sold separately, unlike cheaper models, which have it included in their packaging (and clearly better like micro cube). Of course, the package includes 6 alkaline batteries 1.5 V / AA. An advantage is the 3 independent inputs it has, of which 1 is stereo (and is not affected by the specific effect), but again with a FLAT setting, which however cannot be compared with the sound quality provided by the simulations... in general, I consider its price a bit "steep" when the competition offers other cheaper solutions (e.g. KATANA) in this type of amplifiers.