The Source Audio Toolblox Programmable EQ is a Source Audio eq pedal, currently around $280. Close alternatives include the Orange Amp Detonator and the Morley MO MT Pwov. It pairs well with the Revv Generator G20 20-Watt 2-Channel Tube Head and the Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt.
Source Audio Toolblox Programmable EQ
Source Audio · pedal
The Source Audio Programmable EQ is a 56-bit DSP-driven digital equalizer pedal offering powerful, quiet tone sculpting with footswitch-selectable presets. It provides a multi-band graphic EQ with an output control that doubles as a clean boost, and it can store up to four presets for instant recall, letting players tailor tone to different guitars or radically reshape their sound on the fly. The 56-bit processing and 24-bit converters keep operation hiss-free, and the EQ range is wide enough to make subtle corrections or dramatic, voice-altering shifts. An Auto-Scroll feature enables sweeping, evolving filter sounds for creative use. MIDI capability supports larger rigs. It suits players wanting flexible, transparent EQ and clean boost for live and studio use, from practical tone correction to experimental sound design.
What stands out
“It provides a multi-band graphic EQ with an output control that doubles as a clean boost, and it can store up to four presets for instant recall, letting players tailor tone to different guitars or radically reshape their sound on the fly”
— from the listing
“The Source Audio Programmable EQ is a 56-bit DSP-driven digital equalizer pedal offering powerful, quiet tone sculpting with footswitch-selectable presets”
— from the listing
“It suits players wanting flexible, transparent EQ and clean boost for live and studio use, from practical tone correction to experimental sound design”
— from the listing
“It is used to tailor tone per guitar, shape lead boosts, and create experimental filter sounds, sitting anywhere in the chain, with MIDI for larger setups”
— from the community notes
“It handles everything from subtle corrective EQ to dramatic pickup-revoicing shifts, and the Auto-Scroll feature adds creative, evolving filter textures”
— from the reviews
- clean boost
- quiet
- eq
- filter
- subtle
- midi
- experimental
- transparent
Price updated Oct 24, 2026
Genres the Source Audio Toolblox Programmable EQ is commonly used in
- Experimental
- Electronic
cited
Inferred from shared tonal signals, not a stated genre tag. - Alternative
cited
Inferred from shared tonal signals, not a stated genre tag. - Acoustic
cited
Inferred from shared tonal signals, not a stated genre tag. - Funk
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Source Audio Toolblox Programmable EQ
Revv Generator G20 20-Watt 2-Channel Tube Head
Revv
20% matchRevv Generator G20 20-Watt 2-Channel Tube Head's own high gain character is the real reason this is worth trying
Comes later in the signal chain
Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt
Mesa Boogie
tonal matchComes later in the signal chain
Put Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt after Source Audio Toolblox Programmable EQ
Synergy SL2 Module
Synergy
tonal matchComes later in the signal chain
Synergy SL2 Module goes after Source Audio Toolblox Programmable EQ in the chain
Marshall Studio JCM900 SN20H
Marshall
tonal matchComes later in the signal chain
Put Marshall Studio JCM900 SN20H after Source Audio Toolblox Programmable EQ
Friedman BE-Mini Head
Friedman
tonal matchComes later in the signal chain
Friedman BE-Mini Head goes after Source Audio Toolblox Programmable EQ in the chain
Hughes & Kettner Warp 7
Hughes & Kettner
tonal matchComes later in the signal chain
Hughes & Kettner Warp 7 goes after Source Audio Toolblox Programmable EQ in the chain
Ceriatone 2202H
Ceriatone
tonal matchComes later in the signal chain
Ceriatone 2202H goes after Source Audio Toolblox Programmable EQ in the chain
Egnater Tourmaster Combo 4212
Egnater
tonal matchComes later in the signal chain
Put Egnater Tourmaster Combo 4212 after Source Audio Toolblox Programmable EQ
Pedals that stack with the Source Audio Toolblox Programmable EQ
JHS Smiley
JHS Pedals
22% matchWhat JHS Smiley brings here leans toward fuzzy — that's worth building a pairing around
Comes earlier in the signal chain
EarthQuaker Devices Dirt Transmitter
EarthQuaker Devices
22% matchEarthQuaker Devices Dirt Transmitter leans toward fuzzy, and that's a real, usable character to pair with
Comes earlier in the signal chain
Meris Polymoon
Meris
7% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Keep Meris Polymoon after Source Audio Toolblox Programmable EQ in the signal chain, where it won't crowd Source Audio Toolblox Programmable EQ — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Boss RV-5 Digital Reverb
pedal
7% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Put Boss RV-5 Digital Reverb after Source Audio Toolblox Programmable EQ in the signal chain, where it won't crowd Source Audio Toolblox Programmable EQ — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Dr. Scientist Frazz Dazzler V2
Dr Scientist
tonal matchComes earlier in the signal chain
Dr. Scientist Frazz Dazzler V2 goes in front of Source Audio Toolblox Programmable EQ in the chain
Warm Audio Jet Phaser
Warm Audio
tonal matchComes later in the signal chain
Warm Audio Jet Phaser goes after Source Audio Toolblox Programmable EQ — modulation reads clearest once the core tone is set
Death By Audio Destruction
Death By Audio
tonal matchComes earlier in the signal chain
Put Death By Audio Destruction in front of Source Audio Toolblox Programmable EQ
Subdecay F-Bomb
Subdecay
tonal matchComes earlier in the signal chain
Put Subdecay F-Bomb in front of Source Audio Toolblox Programmable EQ
Cheaper alternatives
Boss GE-7 Equalizer
Boss
46% similarityShared character: low noise floor, users, live
Morley 20/20 Power Wah
Morley
45% similarityShared character: low noise floor, boost
Orange Two Stroke
Orange
43% similarityShared character: boost, transparent
Mask Audio Electronics Line Blur
Mask Audio Electronics
42% similarityShared character: filter
Dr. Scientist Dusk
Dr Scientist
41% similarityShared character: filter, digital, studio
Electro-Harmonix Q-Tron Plus
Electro-Harmonix
40% similarityShared character: filter, boost, subtle
Similar character
Orange Amp Detonator
Orange
63% similarityShared character: low noise floor, transparent, studio
Morley MO MT Pwov
Morley
47% similarityShared character: low noise floor, boost
Empress Para EQ DLX
Empress
45% similarityShared character: filter, studio, stage
Empress Para EQ
Empress
44% similarityShared character: boost, transparent, studio
Subdecay Proteus MKII Sample
Subdecay
43% similarityShared character: filter, digital, subtle
DigiTech DSP 256XL
Digitech
41% similarityShared character: digital, studio, stage
See all alternatives to the Source Audio Toolblox Programmable EQ (cheaper + boutique) →
Questions people ask
What are good alternatives to the Source Audio Toolblox Programmable EQ?+
The closest matches in character are the Orange Amp Detonator, the Morley MO MT Pwov, the Empress Para EQ DLX. Budget picks: Boss GE-7 Equalizer, Morley 20/20 Power Wah, Orange Two Stroke.
What pairs well with the Source Audio Toolblox Programmable EQ?+
Strong matches from rig and tone-complementarity evidence: Revv Generator G20 20-Watt 2-Channel Tube Head, Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt, Synergy SL2 Module — Revv Generator G20 20-Watt 2-Channel Tube Head's own high gain character is the real reason this is worth trying.
How much does the Source Audio Toolblox Programmable EQ cost?+
Around $280 (live listing price, updated Oct 24, 2026).