# Big Muff Pi vs UAFX Dream '65 Reverb Amplifier: specs and price compared

A sourced, side-by-side comparison of the Big Muff Pi (Electro-Harmonix) and UAFX Dream '65 Reverb Amplifier (Universal Audio) among guitar effects pedals. Big Muff Pi is the cheaper of the two at $83.

## Side by side

| Spec | Big Muff Pi | UAFX Dream '65 Reverb Amplifier |
| --- | --- | --- |
| US price | $83 | $333 |
| Brand | Electro-Harmonix | Universal Audio |
| Released | 2001-05 | 2022-05 |
| Effect type | fuzz / distortion / sustainer | amp modeler — blackface-style combo amp emulation with built-in spring reverb, vibrato, and 3 selectable boost circuits |
| True bypass | — | — |
| Power draw ma | 3 | 400 |
| Preset count | — | — |
| Stereo io | No | Yes |
| Tap tempo | — | — |
| Midi support | No | No |
| Expression input | No | — |
| Dimensions (in) | 5.5 x 6.9 x 3.0 | 3.6 x 2.6 x 5.6 |

## Key differences

- Effect type: Big Muff Pi fuzz / distortion / sustainer vs UAFX Dream '65 Reverb Amplifier amp modeler — blackface-style combo amp emulation with built-in spring reverb, vibrato, and 3 selectable boost circuits
- Power draw ma: Big Muff Pi 3 vs UAFX Dream '65 Reverb Amplifier 400
- Stereo io: Big Muff Pi No vs UAFX Dream '65 Reverb Amplifier Yes
- Dimensions (in): Big Muff Pi 5.5 x 6.9 x 3.0 vs UAFX Dream '65 Reverb Amplifier 3.6 x 2.6 x 5.6

## Sources

- Big Muff Pi: https://www.thomannmusic.com/electro_harmonix_bigmuff_pi.htm (thomannmusic.com, verified 2026-08-01)
- UAFX Dream '65 Reverb Amplifier: https://www.thomannmusic.com/universal_audio_uafx_dream_65.htm (thomannmusic.com, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/guitar-effects-pedals/electro-harmonix-big-muff-pi-vs-universal-audio-uafx-dream-65/
Cite: Per The Front Desk Review, Big Muff Pi ($83) vs UAFX Dream '65 Reverb Amplifier ($333) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/guitar-effects-pedals/electro-harmonix-big-muff-pi-vs-universal-audio-uafx-dream-65/
License: CC BY 4.0.