Electro-Harmonix Knockout Attack Equalizer Reissue Pedal

EQ Pedal with High- and Low-pass Filters and Dry Control
Electro-Harmonix Knockout Attack Equalizer Reissue Pedal image 1
Electro-Harmonix Knockout Attack Equalizer Reissue Pedal image 1
Sweetwater Savings: $22.90 MSRP: $91.60
In Stock!
Available for immediate delivery!

Share this with your friends:

Most popular accessories & related items...

Electro-Harmonix Knockout Attack Equalizer Reissue Pedal
In Stock!

Punch up your tone!

With the Knockout Attack Equalizer, Electro-Harmonix packs an amazingly powerful two-filter combination into a stompbox that makes your humbuckers sound like single coils and your Strat sound like a Tele. Place it post-distortion for the heavyweight punch of the metal masters. Knockout is also an awesome add-on to your bass effects rig! The operation is simple with a lowpass filter, a highpass filter, and a dry knob that controls the volume of the dry signal coming from the input jack. Add some punch to your sound with Knockout!

Electro-Harmonix Knockout Attack Equalizer Features:
  • 6-pole High-pass Filter Control
  • 7-pole Low-pass Filter Control
  • Dry Signal Control
  • Low-frequency cutoff at 85Hz
  • High-frequency cutoff at 6.5kHz
Precise tonal control with the Electro-Harmonix Knockout!

Additional Media

New in Stock at Sweetwater

Tech Specs

Customer Reviews

Based on 8 reviews
Write your review


With this pedal I sound 1000 times better I highly recommend this device especially if you suck at playing guitar like me I need all the tricks I can get this pedal packs a real punch. One of my faves in my collection.

It's a Knockout!

I owned one years ago that I used to add some punch to my bass and it was great for that. Now I was looking to fatten up some fuzz for some real doom metal riffage. I was originally going to get an octave divider like the Pitchfork but thought I'd give this a chance and boy does it nail that sound I was looking for. I really like how you can dial in the dry with the low or high so it's like you're playing through 2 or 3 amps at once. Really adds clarity. I think this pedal is really overlooked because it doesn't really pigeonhole into any standard pedal parameters, but it does some really amazing things.
Music background: 20+ years as an amateur guitarist and instructor

Everyone needs this!

I never thought that I would ever say that an EQ would be my favorite pedal. I have quite a few stomp boxes and this by far gives the most dramatic improvement to my tone. It adds so much definition. If you think your guitar sounds great try plugging in to this to make it heavenly!
Music background: Gigging local band

Tremendous Variety of Sounds!

This is an extremely simple but powerful EQ pedal. It's the first thing in my chain now (even before the compressor) because it literally transforms the sound of the guitar. The effect is so natural, it's like picking up an entirely new guitar when you engage it. But I mostly use this to make the acoustic setting on my T5 more beefy...makes it sound like it's not a thinline anymore. Tremendous tonal versatility in a simple stompbox -- what's not to love?
Music background: Amateur Guitarist -- 10+ year

Simply Amazing

I'm a Die Hard FAN of the Les Pauls but theres still something missing till i found out about this pedal. I wanted the thick sound and feel of a Les Paul but i also wanted a nice touch of fender tone. This pedal fixed all my problems. Now i can blend both tones and get an incredible sound from my rig. It doesn't cost much but you get a HUGE bang for your buck. Thank you SWEETWATER for helping me find this pedal.
Music background: Pro. Musician, Recording Engineer
See also: EQ Pedals, Electro-Harmonix, Electro-Harmonix Compressor & EQ Pedals