Aguilar PSU universal 9V adapter for Aguilar AGRO, Filter Twin, Octamizer and TLC Compressor stomp boxes. Comes with four adapters for different countries. universal 9V power adapter for Aguilar AGRO,...

As you may have found out from its product description, Aguilar's Tone Hammer preamp/DI box for bass guitars requires a power supply of 18 volts. If you are hesitant about buying 9V batteries in pairs...