Electro Harmonix B9 Organ MachineWith 9 presets that were finely tuned to emulate the most legendary organs from the 60s and beyond, the B9 Organ Machine will transform your guitar or keyboard. Control the instruments signature percussive click and sweet modulation. Blend your dry signal to create lush layers. Enough tonewheel and combo organ inspiration to light your fire and cook up some green onions! Here are some tips on getting optimum performance from the B9 Organ Machine.