Whereas the PX4D has an obvious practice function of amplifying an electric guitar, any electro-acoustic will have some acoustic sound of its own, so the idea of just plugging in and using the onboard sounds in the PX4A for practising is not quite as appealing. You’d have to turn everything up pretty damn loud to not hear the natural acoustic sound. However, if take advantage of the onboard rhythm machine and the phrase trainer then this makes much more sense. There’s also plenty of functionality for live work and recording.
The sounds here are more difficult to evaluate than the more familiar amp sounds, but there is a great deal of variety on tap and the modelling can really transform the sound of your electro-acoustic to evoke the flavour of a different mic’d-up instrument. The PX4A, therefore, greatly increases the options available to any home recordist who doesn’t have the facility for proper mic’ing. There are also plenty of effects available should you wish to stray away from the conventional – wah-wah acoustic anyone?