The Wren and Cuff De La Riva BM20-Ultra Fuzz is a Wren And Cuff fuzz pedal, currently around $308.78. Close alternatives include the JHS x Electro-Harmonix Big Muff Pi 2 and the Wren and Cuff Box of War OG. It pairs well with the Fender Vibrolux 6G11 and the Marshall JTM45 45W Tube Guitar Amp Head.

Wren and Cuff De La Riva BM20-Ultra Fuzz

Wren And Cuff · pedal

The Wren and Cuff De La Riva BM20-Ultra Fuzz is a highly configurable Big Muff-style fuzz built around 20 internal DIP switches, each offering two settings across nearly every stage of the circuit, plus three external toggles including a silicon/germanium transistor switch. Wren and Cuff states the DIP switches alone yield over a million possible configurations, growing to roughly 8 million with the toggles included. Without touching any switches it delivers familiar, low-noise Muff tones with strong presence. It is built for players who want to explore the full design space of the Big Muff circuit topology rather than a single fixed voicing.

What stands out

  • “, low-noise Muff tones with strong presence”

    — from the listing

  • “The tradeoff reviewers flag is that the vast tweakability can be overwhelming , dependable fuzz tone”

    — from the community notes

  • “germanium transistor switch”

    — from the listing

  • “plus three external toggles including a silicon”

    — from the listing

  • “The Wren and Cuff De La Riva BM20-Ultra Fuzz is a highly configurable Big Muff-style fuzz built around 20 internal DIP switches, each offering two settings across nearly every stage of the circuit, plus three external toggles including a si…”

    — from the listing

  • muff
  • fuzz
  • presence
  • low noise
  • transistor
  • silicon
  • germanium
  • specific target tone
$308.78View on Reverb

Price updated Oct 24, 2026

Genres the Wren and Cuff De La Riva BM20-Ultra Fuzz is commonly used in

  • Stoner Rock
    citedInferred from shared tonal signals, not a stated genre tag.
  • Grunge
    citedInferred from shared tonal signals, not a stated genre tag.

Amps that pair well with the Wren and Cuff De La Riva BM20-Ultra Fuzz

Fender Vibrolux 6G11

amplifier

26% match

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)

Put Fender Vibrolux 6G11 in front and the fuzzy tone leans further toward modulated

Comes later in the signal chain

Marshall JTM45 45W Tube Guitar Amp Head

amplifier

22% match

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (bright → warm)

Marshall JTM45 45W Tube Guitar Amp Head's warm balances out the bright tone

Comes later in the signal chain

Fender Vibro-King Custom 60W 3x10 Tube Guitar Combo Amp

amplifier

tonal match

Comes later in the signal chain

Run fuzzy into Fender Vibro-King Custom 60W 3x10 Tube Guitar Combo Amp for more modulated on top

Gibson Les Paul LP-1 Preamp

Gibson

tonal match

Comes later in the signal chain

Gibson Les Paul LP-1 Preamp layers modulated onto an already fuzzy signal

Magnatone 510

Magnatone

tonal match

Comes later in the signal chain

Magnatone 510 layers modulated onto an already fuzzy signal

Pedals that stack with the Wren and Cuff De La Riva BM20-Ultra Fuzz

JHS Tidewater Tremolo

JHS Pedals

25% match
$124.86via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)

JHS Tidewater Tremolo's modulated voice goes after Wren and Cuff De La Riva BM20-Ultra Fuzz in the signal chain — it's not there to compete with Wren and Cuff De La Riva BM20-Ultra Fuzz's own fuzzy character

Comes later in the signal chain

Walrus Audio Ages

Walrus Audio

21% match
$199via Reverb

gain stackingStacks two gain stages for more saturation than either produces alone. (fuzzy → clean boost)

Run fuzzy into Walrus Audio Ages for more clean boost on top

Comes earlier in the signal chain

Fender Blender

Fender

21% match
$284.16via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → octave)

Fender Blender layers octave onto an already fuzzy signal

TC Electronic Classic Sustain

TC Electronic

17% match
$232.85via Reverb

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (bright → smooth)

TC Electronic Classic Sustain's own compressed character is the real reason this is worth trying

Comes earlier in the signal chain

Electro-Harmonix Memory Boy Analog Delay

Electro-Harmonix

16% match
$104.54via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)

Keep Wren and Cuff De La Riva BM20-Ultra Fuzz's fuzzy voice out front: Electro-Harmonix Memory Boy Analog Delay goes after Wren and Cuff De La Riva BM20-Ultra Fuzz in the signal chain so its analog warmth voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Electro-Harmonix Deluxe Memory Man

Electro-Harmonix

16% match
$171.62via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)

Run Electro-Harmonix Deluxe Memory Man after Wren and Cuff De La Riva BM20-Ultra Fuzz in the signal chain, clear of Wren and Cuff De La Riva BM20-Ultra Fuzz's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

CMATMods Tremoglo

Cmatmods

tonal match
$140.46via Reverb

Comes later in the signal chain

CMATMods Tremoglo belongs after Wren and Cuff De La Riva BM20-Ultra Fuzz, since modulation sits after the gain for a defined swirl

Matthews Effects The Pocket Drive Overdrive Boost

Matthews Effects

tonal match
$105via Reverb

Comes earlier in the signal chain

Matthews Effects The Pocket Drive Overdrive Boost stacks clean boost on top of the fuzzy already here

Cheaper alternatives

Sonicake Fazy Cream Vintage Fuzz

Sonicake

63% similarity
$39.98via Reverb

Shared character: low noise floor, big muff, fuzz

Wren and Cuff Tri-Pie '70

Wren And Cuff

62% similarity
$196.75via Reverb

Shared character: big muff, fuzz

Wampler Velvet Fuzz

Wampler

62% similarity
$199.97via Reverb

Shared character: big muff, fuzz, stage

Browne Amplification T4 Fuzz

Browne Amplification

60% similarity
$179via Reverb

Shared character: big muff, circuit, presence

Dunlop Fuzz Face Mini Germanium

Dunlop

57% similarity
$154.72via Reverb

Shared character: fuzz

Electro-Harmonix Ram's Head Big Muff

Electro-Harmonix

57% similarity
$94.95via Reverb

Shared character: big muff, fuzz

Similar charactersee all similar tone character →

JHS x Electro-Harmonix Big Muff Pi 2

JHS Pedals

61% similarity

Shared character: big muff, presence, fuzz

Wren and Cuff Box of War OG

Wren And Cuff

60% similarity
$298.33via Reverb

Shared character: big muff, presence, fuzz

Fuzz Face Dunlop Fuzz Face Distortion

Fuzz Face

57% similarity

Shared character: fuzz, full

Dunlop Eric Johnson Signature Fuzz Face

Dunlop

56% similarity
$290via Reverb

Shared character: fuzz

Crazy Tube Circuits Constellation OC41

Crazy Tube Circuits

91% similarity

similar tone character

Dunlop Joe Bonamassa Fuzz Face JB-F3 Copper Top

Dunlop

91% similarity

similar tone character

See all alternatives to the Wren and Cuff De La Riva BM20-Ultra Fuzz (cheaper + boutique) →

Questions people ask

What are good alternatives to the Wren and Cuff De La Riva BM20-Ultra Fuzz?+

The closest matches in character are the JHS x Electro-Harmonix Big Muff Pi 2, the Wren and Cuff Box of War OG, the Fuzz Face Dunlop Fuzz Face Distortion. Budget picks: Sonicake Fazy Cream Vintage Fuzz, Wren and Cuff Tri-Pie '70, Wampler Velvet Fuzz.

What pairs well with the Wren and Cuff De La Riva BM20-Ultra Fuzz?+

Strong matches from rig and tone-complementarity evidence: Fender Vibrolux 6G11, Marshall JTM45 45W Tube Guitar Amp Head, Fender Vibro-King Custom 60W 3x10 Tube Guitar Combo Amp — Put Fender Vibrolux 6G11 in front and the fuzzy tone leans further toward modulated.

How much does the Wren and Cuff De La Riva BM20-Ultra Fuzz cost?+

Around $308.78 (live listing price, updated Oct 24, 2026).

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