“Walrus audio slo, I love the art but it's just another shitty Fv-1 reverb with uninteresting algorithms.”

85% of 92 verified owners recommend the Walrus Audio Slo.
Affiliate blogs here say 100% recommend, while the owner-based score is 85%. They earn a commission on every sale — so we show them for transparency but never let them move the score.
The headline score reflects owners (Reddit, enthusiast forums), independent lab tests, and blogs with no affiliate links. YouTube and affiliate blogs are shown for perspective but kept out — hover the i for why.
“Walrus audio slo, I love the art but it's just another shitty Fv-1 reverb with uninteresting algorithms.”
“Walrus Audio Slo: Most expensive pedal purchase yet. Wonderful, dreamy ambient tones. I will say that you have to adjust your playing style to suit it. EG Rise mode only really works with clean tones and minimal playing. The other two modes are more flexible to your playing however.”
“I have a Walrus Audio Slo. I generally use it on the Dream setting, there is a sustain switch that holds your last sound infinitely and you can play over it, its a nice feature. The pedal also has 100% wet and long decays. Its a different kind of reverb though”
“Just spent some time with a Walrus Audio Slo. Reverb with a lot of modulation variation. Warps, reverse and other sounds that connect to Shoegaze playing.”
“Lots of sounds in this pedal, but the sustain feature really knocked it out for me. Throw it on as a drone over a loop and jam away!”
“The reason why I'm writing a review on NPD is because it has a glaring flaw. *Hiss.* Or white noise, whatever you want to call it. **It is really really bad.** It is so so much louder than the noise contributed by my other pedals.”
“in real life it was super sterile and just underwhelming. Some people have said it takes a lot of time and effort to get sounding natural and full of life but I couldn’t get rid of it fast enough. Same can be said for the Walrus Audio Slo”
“I had the Walrus Audio Slo which was beautiful but not stereo and, for what I need, less versatile than the HoF2.”
“Best: Walrus Audio Slo, it's gonna express your sadness through music and ambience effect”
“Walrus Audio Slo: Probably the most fun I've had messing with a reverb pedal. All 3 modes are super fun, with dark (adds in a lower octave in the reverb trails) being my current favorite.”
“The best swell I’ve ever found is the swell setting on a Walrus Audio SLO set fully wet. I adore this setting but don’t really use the pedal for much else (it has a big spacey modulated verb and octave down modes) a lot of people seem to love these but they don’t fit me.”
“I went a bit far into ambient territory on my verb pedals, wish I’d of gotten something a bit more standard, I have the walrus audio slo, Keeley Loomer and obne minim, but I want a good spring/hall/plate sound.”
“Another recent buy, this really excels at super lush ridiculous reverb. I’m still experimenting and learning how to use it with the rest of my gear but it’s really cool. My favorite feature so far is the latching on/off infinite pad sustain in Dream mode.”
“I sold/upgraded my Slo to this one and never looked back. It worked incredibly well as a base reverb (before I snagged the CXM)”
“Walrus Audio Slo - My favourite mono reverb. The first 2 settings are so shit IMO that I can’t even remember their names, but the dream setting is where it’s at. Ambiance, shoegazy parts, this bad boy does it all.”
“It’s a killer verb honestly. For what they go for used it’s got some fun tricks and an overall cool tonality to it.”
“Walrus Audio Slo. It does cool stuff, but I always go back to my Supernatural or Bluesky.”
“I've had some luck with eqd astral destiny and walrus audio slo reverb pedals - they both have the ability to add an octave to the reverb tail.”
“Walrus Slo for insane, amazing sound huge reverb.”
“Walrus Audio Slo - perfect end to my humble set up. Most of the time using it on "Dream" setting.”
“Had to use the manual and watch a video to figure out how to use the Walrus Audio Slo pedal, and I still refer to it sometimes years later.”
“It’s so lush and beautiful sounding, but ultimately I play thrash metal and didn’t have a use for it live”
“I’ve personally been loving the Walrus Audio Slo. Probably my favorite one I own at the moment.”
“the Slo makes me beyond happy”