- Model Name: PA-1QB BASS - Function: Programmable Analog 10-Band EQ - Output Terminals: Output - Settings: Preset, Level, Parameter - Save Function: Save Button The PA-1Q series is a groundbreaking product from FREE THE TONE that further advances the fusion of digital and analog technologies cultivated in the development of AMBI SPACE and TRI AVATAR. At first glance, it looks like a digital equalizer effect, but the PA-1Q series is an "analog equalizer." The equalizer circuit (including input/output sections) through which the guitar and bass signals pass is entirely composed of analog circuits, processing the rich tones of the guitar and bass as analog signals. It uses the same signal processing method as a graphic equalizer with old-fashioned slide volume controls. While it's an ordinary analog effect, the parameter control section of the PA-1Q series uses digital circuits to accurately store and process the status of various parameters digitally. This has resulted in a groundbreaking product that, while being an analog effect, enables presets and real-time control via MIDI. (Quoted from the official website) As a bass EQ from Free The Tone, it's an analog effect that retains the original sound while allowing for presets and MIDI use. It can handle a wide range of sound creation with just one unit, and is used by many professional players, including Mr. Futatsumoto. The user experience is easy to understand and allows for intuitive operation, so you should be able to adapt to your needs quickly. Regarding the sound, there are no unnecessary changes or flavorings, and it directly addresses the necessary frequency bands, allowing for everything from fine adjustments to significant enhancements. I used it a few times live after purchase, but there are no noticeable scratches or stains, and there are no issues such as crackling or switch malfunctions. There are no problems with the operation. Since this is a used item, please refrain from purchasing if you are concerned. Immediate purchase is possible. Thank you for viewing.