I'm selling this because I was able to create sounds using other methods, so I only used it for testing. However, when I connected it to the input of my KEMPER, the amount of information and resolution clearly improved. It seems certain that it has a definite effect on digital processors. I will also include related equipment that would normally need to be purchased separately. - TRS cable - Free the Tone - 9V adapter - CAJ <Excerpt from EVA Electronics description> A high-quality buffer specifically designed for input connections to digital processors such as KEMPER, FRACTAL, and the latest Neural DSP QUAD CORTEX, supporting high-impedance output and balanced output. This product operates on an external DC9V power supply and employs a unique power circuit that boosts and stabilizes the voltage to 30V within the unit, ensuring a clean and powerful guitar signal with an overwhelming dynamic range. Furthermore, the balanced connection allows for the supply of a vast amount of information to the processor. The more information you feed into processors like KEMPER, the more realistic the sound becomes. The balanced connection effect, after resolving the impedance issues between the buffer and the processor, will surprise you with the immediate improvement in attack, rich touch and nuance, and the three-dimensionality of the sound.