Find Reviews and Compare Prices 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? Just Ask! Member Reviews Compare Prices Product Spec Send to a friend Category Equalization & Tone Shaping Bass Guitar EffectsCompression & SustainDelay & ReverbDesktop & Rack Guitar EffectsDIYEqualization & Tone ShapingFloor Guitar EffectsHarmonizer, Pitch Shifter, Octave Mod.Looper & SamplerModulation, Chorus, Flanging, PhasingMulti Effects PedalsNoise Gate & SuppressorOctave & Ring ModulatorOverdrive, Distortion, Fuzz & BoostPedalboardsPower SuppliesRouter, Signal Path & Pedal TunerVolume & ExpressionWah, Talk Box & Filter--------Suggest a new option Brand Electro-Harmonix AguilarAMT ElectronicsAphexBarberBBEBehringerBlackstarBossCarl MartinCMATMODSCoffin CaseDamage ControlDanelectroDaphonDevi EverDigital MusicDigiTechDNA AnalogicDODDunlopEBSEbtechEffectsPowerSupplies.comElectro-HarmonixEMMAErnie BallEventideFenderFishmanFractal AudioFulltoneGatorGeorge DennisGig-FXGodlykeGoosoniqueworxGuitarPCB.comGuyatoneHaoIbanezISP TechnologiesJacquesJHS pedalsKeeleyKorgKrankLehleLine 6Mad ProfessorMahoneyMalekko Heavy IndustryMarshallMaxonMI EffectsModtone EffectsMorleyMorpheusMPMMusicians GearMXRPearlPedaltrainPigtronixPro CoRadialRed WitchRMCRocktronRoger Linn DesignRolandSabineSanyoSeymour DuncanSKBSnarling Dogs Sonic ResearchSR&DSuhrT-RexTC ElectronicTech 21THDToadWorksVisual SoundVoodoo LabVoxWamplerWhirlwindXotic EffectsZoomZVex--------Suggest a new option Something wrong in this page? Let us know! Related products: More Equalization & Tone Shaping Guitar Effects Other Guitar Effects internal use: spec33 spec242 spec582