Find the lowest price for:       All ProductsGuitar Effects     0.0 (0)   Add a review Electro-Harmonix XO Knockout Attack Equalizer Guitar Effects Pedal   Get down! Generates deep, phat bass tones one octave below the notes you play. Two separate smoothing filters enable you to tailor your sub-octave signal to the exact bass sound you desire, separating the Octave Multiplexer from other octave devices... Have a question? Ask the Experts! Set Price Alert Compare Prices Product Spec Member Reviews Recommend to Friends Searched Electro-Harmonix XO Knockout Attack Equalizer Guitar Effects Pedal in 150 stores, 8 results found Image Description   Store   Price Electro Harmonix Knockout Attack Equalizer Pedal Non Factory Sealed If this item doesn't belong here, click Remove and help us keep our results accurate.   American Musical   1 Store Reviews   $57.95 Go to Store Electro Harmonix Knockout Equalizer Pedal If this item doesn't belong here, click Remove and help us keep our results accurate.   zZounds   1 Store Reviews   $57.95 Go to Store Electro-Harmonix Knockout Attack EQ If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $66.75 Go to Store Electro Harmonix Knockout Attack Equalizer Pedal If this item doesn't belong here, click Remove and help us keep our results accurate.   American Musical   1 Store Reviews   $66.75 Go to Store Electro Harmonix Knockout Equalizer Pedal If this item doesn't belong here, click Remove and help us keep our results accurate.   samedaymusic   1 Store Reviews   $66.75 Go to Store electro-harmonix XO Series Knockout If this item doesn't belong here, click Remove and help us keep our results accurate.   Sweetwater   1 Store Reviews   $66.75 Go to Store Electro-Harmonix XO Knockout Attack Equalizer Guitar Effects Pedal If this item doesn't belong here, click Remove and help us keep our results accurate.   Musicians Friend   5 Store Reviews   $66.75 Go to Store Electro-Harmonix Knockout Attack EQ If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $66.75 Go to Store Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More Equalization & Tone Shaping Guitar Effects Other Guitar Effects internal use: spec33 spec242 spec582