Vivie OwlMighty bass preamp. It is fully functional, but please note the following modifications: ◯ I created and applied labels to the knobs because the original markings were very difficult to read. (I've also uploaded a photo of the original control panel for reference.) ◯ The power supply electrolytic capacitors on the circuit board have been replaced with high-grade components. ◯ Oyaide Electric noise suppression tape has been applied to the op-amps on the circuit board. (This tape has weak adhesion and can be easily removed if desired.) ◯ Velcro for securing the unit to a board has been applied to the back. Please understand that I am not accepting price reduction requests due to the reasons stated in my profile. Thank you very much.