PA-1QA for Acoustic is a revolutionary product that further promotes the fusion of digital and analog technology developed by FREETHETONE in AMBISPACE and TRIAVATAR. At first glance, it looks like a digital equalizer effector, but this PA-1QA is the "Analog Equalizer". The equalizer circuitry that passes through the guitar and base signals are all constructed with analog circuitry and the rich tone of the guitar and base will handle the analog signal. Same way to handle the traditional graphic equalizer with slide volume. Although it is a normal analog effector, the parameter control part of the PA-1QA is a digital circuit, it accurately stores and processes the state of various parameters digitally. This results in a revolutionary product that allows for real-time control with preset and MIDI while being an analog effector.