The Electro-Harmonix Signal Pad is an Electro-Harmonix overdrive pedal, currently around $37.29. Close alternatives include the Warm Audio Warmdrive and the Silktone Overdrive Plus. It pairs well with the Fender Prosonic and the Marshall Studio JTM ST20C MkII 20W 1x12 Combo.
Electro-Harmonix Signal Pad
Electro-Harmonix · pedal
The Electro-Harmonix Signal Pad is a fully passive, true bypass signal attenuator pedal. A single Level knob cuts guitar output from unity to silence. It requires no power — no battery, no power adapter — and the passive resistive circuit adds no coloration at moderate attenuation levels. Common applications include reducing overdrive or distortion output to match unity gain, or switching between a boosted lead level and a lower rhythm level without touching the amplifier. Discontinued in 2025.
What stands out
“Best placed after a buffered effect in the chain — in fully passive signal paths, the resistive network interacts with pickup impedance and introduces measurable high-frequency rolloff at heavy attenuation, resulting in a slightly darker, m…”
— from the community notes
“The noise floor remains exactly as it was before the pedal in the chain”
— from the reviews
“the signal pad is valued as a simple”
— from the community notes
“At heavy attenuation into a passive guitar signal, the resistive load interacts with pickup inductance to produce a gradual high-frequency rolloff — placing the pedal after any buffered pedal”
— from the reviews
“The main caveat is that HF loss at high attenuation in passive chains is a real tonal concern,”
— from the community notes
- frequency
- rolloff
- simple
- impedance
- expression pedal
- attenuator
- rhythm
- lead
Price updated Oct 24, 2026
Amps that pair well with the Electro-Harmonix Signal Pad
Fender Prosonic
amplifier
24% matchfills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (bright → warm)
Fender Prosonic leans warm right where the bright tone needs it
Comes later in the signal chain
Marshall Studio JTM ST20C MkII 20W 1x12 Combo
Marshall
24% matchInto a transparent tone, Marshall Studio JTM ST20C MkII 20W 1x12 Combo brings a pull toward low gain that's missing
Comes later in the signal chain
Marshall Vintage Modern 2466
Marshall
tonal matchComes later in the signal chain
Into a transparent tone, Marshall Vintage Modern 2466 brings a pull toward low gain that's missing
Ampeg V-4
Ampeg
tonal matchComes later in the signal chain
Ampeg V-4 leans this transparent tone toward mid-forward, which it doesn't make on its own
Ampeg BA 108
Ampeg
tonal matchComes later in the signal chain
Into a transparent tone, Ampeg BA 108 brings a pull toward mid-forward that's missing
Synergy SL2 Module
Synergy
tonal matchComes later in the signal chain
Synergy SL2 Module leans this transparent tone toward high gain, which it doesn't make on its own
Blackstar HT Stage 100H MK III Snakeskin
Blackstar
tonal matchComes later in the signal chain
Into a transparent tone, Blackstar HT Stage 100H MK III Snakeskin brings a pull toward high gain that's missing
Blackstar Series One 200
Blackstar
tonal matchComes later in the signal chain
Blackstar Series One 200 leans this transparent tone toward high gain, which it doesn't make on its own
Pedals that stack with the Electro-Harmonix Signal Pad
Boss OD-1 Overdrive
Boss
21% matchfills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (bright → smooth)
Boss OD-1 Overdrive's smooth balances out the bright tone
Nobels ODR-1
Nobels
21% matchfills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (transparent → mid-forward)
Nobels ODR-1 leans this transparent tone toward mid-forward, which it doesn't make on its own
MXR Flanger
MXR
21% 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 MXR Flanger after Electro-Harmonix Signal Pad in the signal chain, clear of Electro-Harmonix Signal Pad's own gain stage
Comes later in the signal chain
SahBro? Audio Ross Kempressor
Sahbro Audio
17% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain.
SahBro? Audio Ross Kempressor's own compressed character is the real reason this is worth trying
Comes earlier in the signal chain
T-Rex Junior Roomate
T Rex
13% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Run T-Rex Junior Roomate after Electro-Harmonix Signal Pad in the signal chain, clear of Electro-Harmonix Signal Pad's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Alexander Pedals Now We Are Ghosts Reverb
Alexander Pedals
12% 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 Alexander Pedals Now We Are Ghosts Reverb after Electro-Harmonix Signal Pad in the signal chain, clear of Electro-Harmonix Signal Pad's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Dunlop Echoplex Preamp
Dunlop
tonal matchComes later in the signal chain
Dunlop Echoplex Preamp's smooth balances out the bright tone
Source Audio L.A. Lady
Source Audio
tonal matchInto a transparent tone, Source Audio L.A. Lady brings a pull toward low gain that's missing
Boutique & premium upgrades
Pete Cornish LD-1
Pete Cornish
53% similarityShared character: 8 impedance, transparent
67Audio Harry Balz
67audio
51% similarityShared character: true bypass, lead
EarthQuaker Devices Zoar
EarthQuaker Devices
50% similarityShared character: simple, lead
Pete Cornish SS-3
Pete Cornish
49% similarityShared character: 8 impedance, transparent, lead
Source Audio ZIO
Source Audio
47% similarityShared character: 8 impedance, transparent
DigiTech DOD Overdrive Preamp 250
Digitech
47% similarityShared character: simple three knob layout, simple, transparent
Similar charactersee all similar tone character →
Warm Audio Warmdrive
Warm Audio
58% similarityShared character: transparent, lead
Silktone Overdrive Plus
Silktone
54% similarityShared character: signal chain, lead
Aria Lil' RAT Distortion
Aria
52% similarityShared character: true bypass
Ibanez TS9 Tube Screamer
Ibanez
50% similarityShared character: simple three knob layout, noise, true bypass
DOD YJM308 Preamp Overdrive
Dod
49% similarityShared character: true bypass, transparent, lead
Suhr Isoline
Suhr
47% similarityShared character: 8 impedance
See all alternatives to the Electro-Harmonix Signal Pad (cheaper + boutique) →
Questions people ask
What are good alternatives to the Electro-Harmonix Signal Pad?+
The closest matches in character are the Warm Audio Warmdrive, the Silktone Overdrive Plus, the Aria Lil' RAT Distortion. Boutique upgrades: Pete Cornish LD-1, 67Audio Harry Balz, EarthQuaker Devices Zoar.
What pairs well with the Electro-Harmonix Signal Pad?+
Strong matches from rig and tone-complementarity evidence: Fender Prosonic, Marshall Studio JTM ST20C MkII 20W 1x12 Combo, Marshall Vintage Modern 2466 — Fender Prosonic leans warm right where the bright tone needs it.
How much does the Electro-Harmonix Signal Pad cost?+
Around $37.29 (live listing price, updated Oct 24, 2026).