Guitar Pedals · owner-verdict comparison

MXR Carbon Copy vs Walrus Audio Slo: what real owners say

Real owners lean toward the Walrus Audio Slo: 88% of 307 owners recommend it, vs 71% of 31 for the MXR Carbon Copy.

Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score

MXR Carbon Copy

71%of 31 owners recommend
71% recommend · 13% neutral · 16% don't
Full owner report →

Walrus Audio Slo

88%of 307 owners recommend
88% recommend · 8% neutral · 4% don't
Owners praise
  • Lush, dreamy ambient reverb tones
  • Infinite sustain/latch footswitch for drones and pads
  • Favorite Dream mode beloved by owners
Owners complain about
  • Learning curve to dial in the sounds
Full owner report →

What MXR Carbon Copy owners say

“Easily my favourite delay pedal!”
— @thejosebatista on YouTube
“Love the CarbonCopy.”
— @northof50now on YouTube
“j'ai acheté cet effet c'est loin d'être ça !”
— @francoisb4830 on YouTube

What Walrus Audio Slo owners say

“Yes this is the looking out the car window being sad sound I needed”
— @coolrecorderguy4206 on YouTube
“Oh god my wallet”
— @UncoolOcean on YouTube
“Walrus audio slo, I love the art but it's just another shitty Fv-1 reverb with uninteresting algorithms.”
— tails_the_gay_fox on Reddit