Thank you for viewing. This is a long-selling product from Arion, a chorus pedal with excellent sound quality even though it's a budget-friendly effector. The following modifications have been made: (conv.SCH-1G) The circuit has been modified to match the SCH-1. The "G" in 1G above refers to the initial gray enclosure model. → The circuits of the SCH-1 gray enclosure and black enclosure models are slightly different. The added circuit board uses point-to-point wiring. True bypass has been implemented. ※ As a result, OUT2 cannot be used. The audio signal is blocked. The vacant upper stereo switch has been repurposed to switch between Chorus and Vibe modes. All electrolytic capacitors have been replaced with Nichicon MUSE ES (audio-grade non-polar) capacitors (← the green capacitors). There is a change like the clouds have cleared, and the sound quality becomes richer. (This is just my subjective impression...) During the parts replacement, the land in the red circle in photo 9 came off slightly, but it has been connected with point-to-point wiring, and there are no operational issues. Voltage drop countermeasures have been implemented. The LED has been changed to a high-brightness blue LED. Furthermore, it flashes in sync with the RATE knob. A bypass capacitor has been added to the power supply section to reduce noise. For the modification, Japanese Almit KR-19RMA solder was used for the main power supply section, and KESTER44 was used for the rest. Also, BELDEN8503 wire was used for the added wiring other than the LED circuit, and Rubicon F2D film capacitors were used for the replaced film capacitors. [Reference Video] https://youtu.be/qTerUG9it64?si=Og5Q6leMHTm2j0pU I hope this is helpful. Operation has been confirmed with an adapter and a 9V battery. There is no scratchiness in the knobs. The item includes the main unit only. (The removed parts will also be included.) Thank you.