Guitar amps · owner-verdict comparison

Fender Mustang LT25 vs Positive Grid Spark 40: what real owners say

Real owners lean toward the Positive Grid Spark 40: 54% of 52 owners recommend it, vs 46% of 35 for the Fender Mustang LT25.

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

Fender Mustang LT25

46%of 35 owners recommend
46% recommend · 28% neutral · 26% don't
Full owner report →

Positive Grid Spark 40

54%of 52 owners recommend
54% recommend · 4% neutral · 42% don't
Owners praise
  • Excellent value practice amp
  • Huge tone variety via app
  • Fun for jamming and learning songs
Owners complain about
  • Reliability issues, hiss or cutout
  • Not loud enough to gig
  • Thin, digital sound versus tube amps
Full owner report →

What Fender Mustang LT25 owners say

“Makes this amp 100x more awesome.”
— @SchMasHed on YouTube
“This seems to be the ultimate practice at home amp.”
— @_dcano on YouTube
“The distortion sounds dark and muddy..”
— @williammolina9792 on YouTube

What Positive Grid Spark 40 owners say

“What I love most about Spark is when I want to learn a song, I search the cloud for the song.”
— @jrigwald on YouTube
“The best practice amp I have ever owned. Full stop.”
— @l-Libertine on YouTube
“The first built-in practise pattern I tried has got wrong chord positions in the grid - pretty much useless for a beginner, who *depends* on the practise material to be _correct._”
— @Noone-of-your-Business on YouTube