The Behringer B-Tron III Envelope Filter is a Behringer wah pedal, currently around $78.90. Close alternatives include the Emma DiscomBOBulator and the Electro-Harmonix Micro Q-Tron Envelope Filter. It pairs well with the Bad Cat Cub and the Cornell Romany 10 Tweed 10 watt Tube.

Behringer B-Tron III Envelope Filter

Behringer · pedal

The Behringer B-Tron III is an envelope filter pedal described as a faithful recreation of classic auto-wah effects that defined the 1970s funk sound. Three filter types are selectable: Low-Pass (LP), Band-Pass (BP), and High-Pass (HP). A Sensitivity control adjusts how the filter responds to playing dynamics. Up and Down modes switch between an upward wah sweep and a downward filtering voice. True bypass. 9V battery or DC supply. Part of Behringer studio-grade effects series targeting vintage 1970s funk filter tones at accessible price points.

What stands out

  • “Use case: funk and R&B guitarists and bassists who want 1970s auto-wah filter tones with more filter type variety than a single-mode auto-wah pedal provides”

    — from the community notes

  • “Tone: three switchable filter modes (LP, BP, HP) with dynamic Sensitivity response; Up mode delivers upward Cry-Baby style wah sweep, Down mode produces downward filtering for contrasting tonal character”

    — from the community notes

  • “The Behringer B-Tron III is an envelope filter pedal described as a faithful recreation of classic auto-wah effects that defined the 1970s funk sound”

    — from the listing

  • “Three filter types are selectable: Low-Pass (LP), Band-Pass (BP), and High-Pass (HP)”

    — from the listing

  • “The B-Tron III delivers the fundamental envelope filter experience with more filter type variety than most budget auto-wahs”

    — from the reviews

Trade-offs

  • “Signal-chain interaction: place early in the signal chain before drives and compressors for maximum dynamic filter tracking from the instrument signal”

    — from the community notes

  • filter
  • sensitivity
  • envelope filter
  • wah
  • dynamic
  • auto wah
  • bypass
  • tracking

Good for

  • Busking
$78.90View on Reverb

Price updated Oct 24, 2026

Genres the Behringer B-Tron III Envelope Filter is commonly used in

  • Funk
  • Alternative Rock
  • Soul
    citedInferred from shared tonal signals, not a stated genre tag.
  • Reggae
    citedInferred from shared tonal signals, not a stated genre tag.
  • Experimental
    citedInferred from shared tonal signals, not a stated genre tag.

Amps that pair well with the Behringer B-Tron III Envelope Filter

Bad Cat Cub

Bad Cat

22% match

shapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)

What Bad Cat Cub brings here leans toward harmonically rich — that's worth building a pairing around

Comes later in the signal chain

Cornell Romany 10 Tweed 10 watt Tube

Cornell

20% match
$1465.52via Reverb

shapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)

Into a dynamic tone, Cornell Romany 10 Tweed 10 watt Tube brings a pull toward compressed that's missing

Comes later in the signal chain

Ceriatone British Style 2525

Ceriatone

tonal match

Comes later in the signal chain

Ceriatone British Style 2525 leans this dynamic tone toward compressed, which it doesn't make on its own

Vox AC30S1 OneTwelve 30W 1x12 Combo

Vox

tonal match

Comes later in the signal chain

Vox AC30S1 OneTwelve 30W 1x12 Combo leans this dynamic tone toward compressed, which it doesn't make on its own

Fryette Power Station 100

Fryette

tonal match
$1199via Reverb

Comes later in the signal chain

Into a dynamic tone, Fryette Power Station 100 brings a pull toward compressed that's missing

Kustom HV30 Tube

Kustom

tonal match
$234.02via Reverb

Comes later in the signal chain

Into a dynamic tone, Kustom HV30 Tube brings a pull toward compressed that's missing

Mesa/Boogie Stiletto Deuce Stage II

Mesa Boogie

tonal match
$1147.50via Reverb

Comes later in the signal chain

Into a dynamic tone, Mesa/Boogie Stiletto Deuce Stage II brings a pull toward compressed that's missing

Friedman PT-20

Friedman

tonal match
$1499via Reverb

Comes later in the signal chain

Into a dynamic tone, Friedman PT-20 brings a pull toward compressed that's missing

Pedals that stack with the Behringer B-Tron III Envelope Filter

Origin Effects RevivalDrive

Origin Effects

21% match

shapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)

Origin Effects RevivalDrive leans this dynamic tone toward compressed, which it doesn't make on its own

Comes later in the signal chain

Dunlop MXR Distortion Plus

Dunlop

20% match

shapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)

Into a dynamic tone, Dunlop MXR Distortion Plus brings a pull toward compressed that's missing

Comes later in the signal chain

JHS Lucky Cat Delay limited edition

JHS Pedals

10% match
$280.82via 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.

Put JHS Lucky Cat Delay limited edition after Behringer B-Tron III Envelope Filter in the signal chain, where it won't crowd Behringer B-Tron III Envelope Filter — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

EarthQuaker Devices Afterneath

EarthQuaker Devices

5% match

Keep Behringer B-Tron III Envelope Filter's dynamic voice out front: EarthQuaker Devices Afterneath goes after Behringer B-Tron III Envelope Filter in the signal chain so its ambient voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

DigiTech DOD Compressor 280

Digitech

tonal match
$118.97via Reverb

Comes later in the signal chain

Into a dynamic tone, DigiTech DOD Compressor 280 brings a pull toward compressed that's missing

DigiTech XBS Bass Squeeze

Digitech

tonal match
$95.74via Reverb

Comes later in the signal chain

Into a dynamic tone, DigiTech XBS Bass Squeeze brings a pull toward compressed that's missing

Fairfield Circuitry 20% More

Fairfield Circuitry

tonal match
$450.49via Reverb

Comes later in the signal chain

Into a dynamic tone, Fairfield Circuitry 20% More brings a pull toward compressed that's missing

Tech 21 CompTortion

Tech 21

tonal match

Comes later in the signal chain

Tech 21 CompTortion leans this dynamic tone toward compressed, which it doesn't make on its own

Cheaper alternatives

Demon FX Pearl White Auto Wah

Demon Fx

57% similarity
$52.60via Reverb

Shared character: sensitivity, tight tracking, wah

Donner Dynamic wah

Donner

51% similarity
$45via Reverb

Shared character: sensitivity, wah, filter

Rocktron VII Deadly Sins Auto Wah

Rocktron

95% similarity
$43.88via Reverb

similar tone character

Rocktron Heart Attack Dynamic Filter

Rocktron

95% similarity
$34.13via Reverb

similar tone character

Maestro Agena

Maestro

94% similarity
$59via Reverb

similar tone character

Boutique & premium upgrades

Electro-Harmonix Q-Tron Plus

Electro-Harmonix

63% similarity
$162.08via Reverb

“budget construction means sensitivity response and tracking quality may not match premium envelope filters like the Mu-Tron III or EHX Q-Tron”

Carl Martin Ottawa Vintage Optical Envelope Auto-Wah/Envelope Filter

Carl Martin

61% similarity
$143.54via Reverb

Shared character: sensitivity, tight tracking, wah

Carl Martin Ottawa

Carl Martin

59% similarity
$145.09via Reverb

Shared character: sensitivity, tight tracking, wah

Keeley Nova Wah

Keeley

59% similarity
$279.65via Reverb

Shared character: sensitivity, wah, filter

Maxon AF-9 Auto Filter

Maxon

57% similarity
$263.27via Reverb

Shared character: sensitivity, filter, alternative

Ashdown Funk Faze

Ashdown

56% similarity
$172.30via Reverb

Shared character: sensitivity, wah, filter

Similar charactersee all similar tone character →

Emma DiscomBOBulator

pedal

59% similarity

Shared character: sensitivity, tight tracking, wah

Electro-Harmonix Micro Q-Tron Envelope Filter

Electro-Harmonix

57% similarity
$77.03via Reverb

Shared character: sensitivity, tight tracking, wah

Smokin' Amp Co. Micro V Envelope Filter

Smokin Amp Co

53% similarity

Shared character: tight tracking, wah, filter

Electro-Harmonix XO Micro Q-Tron

Electro-Harmonix

52% similarity
$77.03via Reverb

Shared character: sensitivity, tight tracking, filter

Aitone AT-08

Aitone

51% similarity

Shared character: sensitivity, wah, filter

Vox V863CA Auto Wah

Vox

51% similarity

Shared character: sensitivity, wah, filter

See all alternatives to the Behringer B-Tron III Envelope Filter (cheaper + boutique) →

Questions people ask

What are good alternatives to the Behringer B-Tron III Envelope Filter?+

The closest matches in character are the Emma DiscomBOBulator, the Electro-Harmonix Micro Q-Tron Envelope Filter, the Smokin' Amp Co. Micro V Envelope Filter. Budget picks: Demon FX Pearl White Auto Wah, Donner Dynamic wah, Rocktron VII Deadly Sins Auto Wah. Boutique upgrades: Electro-Harmonix Q-Tron Plus, Carl Martin Ottawa Vintage Optical Envelope Auto-Wah/Envelope Filter, Carl Martin Ottawa.

What pairs well with the Behringer B-Tron III Envelope Filter?+

Strong matches from rig and tone-complementarity evidence: Bad Cat Cub, Cornell Romany 10 Tweed 10 watt Tube, Ceriatone British Style 2525 — What Bad Cat Cub brings here leans toward harmonically rich — that's worth building a pairing around.

How much does the Behringer B-Tron III Envelope Filter cost?+

Around $78.90 (live listing price, updated Oct 24, 2026).

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