The Fulltone Ultimate Octave is a Fulltone octave pedal, currently around $164.99. Close alternatives include the EarthQuaker Devices Tentacle and the KMA Machines Mandrake. It pairs well with the Laney RB3 Richter Bass Amp and the Boss CEB-3 Bass Chorus Ensemble.
Fulltone Ultimate Octave
Fulltone · pedal
The Fulltone Ultimate Octave is a fat, BC108-transistor fuzz and distortion pedal paying homage to the classic Octavia circuit, with a separate footswitch that kicks in a searing, aggressive octave-up on command rather than functioning as a clean, precise pitch-shifter. An active tone control and a Fat/Bright switch reshape both the fuzz and octave character, from a thicker, mid-forward voice to a more open, scooped-mid brightness with defined highs. Tracking holds up well across the neck, with the clearest octave definition from the neck pickup. Used by Primus's Ler LaLonde and Aerosmith's Joe Perry, it suits psychedelic and classic rock players wanting an aggressive fuzz with a genuine Octavia-style octave-up option.
What stands out
“An active tone control and a Fat/Bright switch reshape both the fuzz and octave character, from a thicker, mid-forward voice to a more open, scooped-mid brightness with defined highs”
— from the listing
“bc108-transistor fuzz and distortion pedal paying homage to the classic octavia circuit”
— from the listing
“Used by Primus's Ler LaLonde and Aerosmith's Joe Perry, it suits psychedelic and classic rock players wanting an aggressive fuzz with a genuine Octavia-style octave-up option”
— from the listing
“• excellent octa-fuzz — I believe this pedal is a highly refined foxx tone machine octave fuzz”
— from the community notes
“If you want Octavia look at fulltones smaller octave box”
— from the community notes
Trade-offs
“i enjoyed this pedal but prefer the more subtle”
— from the community notes
- octave
- octavia
- fuzz
- octave fuzz
- aggressive
- definition
- searing
- bright
Price updated Oct 24, 2026
Genres the Fulltone Ultimate Octave is commonly used in
- Stoner Rock
- Classic Rock
- Experimental
cited
Inferred from shared tonal signals, not a stated genre tag. - Noise Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Psychedelic Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Rock
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Fulltone Ultimate Octave
Laney RB3 Richter Bass Amp
Laney
23% matchLaney RB3 Richter Bass Amp's own mid-forward character is the real reason this is worth trying
Comes later in the signal chain
Boss CEB-3 Bass Chorus Ensemble
Boss
23% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → modulated)
What Boss CEB-3 Bass Chorus Ensemble brings here leans toward modulated — that's worth building a pairing around
Comes later in the signal chain
Ceriatone HRM 50
Ceriatone
tonal matchComes later in the signal chain
Put Ceriatone HRM 50 after Fulltone Ultimate Octave
Ceriatone Overtone Special HRM Bluesmaster 50
Ceriatone
tonal matchComes later in the signal chain
Ceriatone Overtone Special HRM Bluesmaster 50 goes after Fulltone Ultimate Octave in the chain
Gallien-Krueger Fusion 210
Gallien Krueger
tonal matchComes later in the signal chain
Gallien-Krueger Fusion 210 goes after Fulltone Ultimate Octave in the chain
Aguilar SL110 Fawn Limited
Aguilar
tonal matchComes later in the signal chain
Aguilar SL110 Fawn Limited goes after Fulltone Ultimate Octave in the chain
Magnatone 460
Magnatone
tonal matchComes later in the signal chain
Magnatone 460 goes after Fulltone Ultimate Octave in the chain
Phil Jones BG-400 Suitcase Compact Bass Combo
Phil Jones
tonal matchComes later in the signal chain
Put Phil Jones BG-400 Suitcase Compact Bass Combo after Fulltone Ultimate Octave
Pedals that stack with the Fulltone Ultimate Octave
Walrus Audio EB-10 Black Edition
Walrus Audio
23% matchWalrus Audio EB-10 Black Edition leans toward clean boost, and that's a real, usable character to pair with
Comes later in the signal chain
Electro-Harmonix Green Russian Big Muff
Electro-Harmonix
22% matchElectro-Harmonix Green Russian Big Muff leans toward full, and that's a real, usable character to pair with
Comes later in the signal chain
Hungry Robot The Borderland
Hungry Robot
19% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → modulated)
Hungry Robot The Borderland's modulated voice goes after Fulltone Ultimate Octave in the signal chain — it's not there to compete with Fulltone Ultimate Octave's own octave character — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
J. Rockett Clockwork Echo
J Rockett
19% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → modulated)
Keep Fulltone Ultimate Octave's octave voice out front: J. Rockett Clockwork Echo goes after Fulltone Ultimate Octave in the signal chain so its modulated voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
MXR CAE Wah
MXR
tonal matchComes earlier in the signal chain
MXR CAE Wah goes in front of Fulltone Ultimate Octave — a wah tracks picking dynamics best on the raw signal
JAM Pedals RetroVibe Mk.4
Jam Pedals
tonal matchComes later in the signal chain
JAM Pedals RetroVibe Mk.4 belongs after Fulltone Ultimate Octave, since modulation reads clearest once the core tone is set
Matthews Effects The Pocket Drive Overdrive Boost
Matthews Effects
tonal matchComes later in the signal chain
Matthews Effects The Pocket Drive Overdrive Boost goes after Fulltone Ultimate Octave in the chain
EarthQuaker Devices Swiss Things
EarthQuaker Devices
Cheaper alternatives
Boutique & premium upgrades
Roger Mayer Octavia
Roger Mayer
66% similarityShared character: neck pickup, bright, tight tracking
Roger Mayer Octavia Classic
Roger Mayer
65% similarityShared character: neck, bright, tight tracking
Meris Enzo X
Meris
48% similarityShared character: fat, tight tracking, one octave
Zvex Jonny Octave
Zvex
45% similarityShared character: neck pickup, tight tracking, one octave
Mu-Tron Octave Divider
pedal
45% similarityShared character: fat, tight tracking, one octave
Similar character
EarthQuaker Devices Tentacle
EarthQuaker Devices
67% similarityShared character: one octave
KMA Machines Mandrake
Kma Machines
67% similarityShared character: tight tracking, one octave, aggressive playing
Tycobrahe Octavia
Tycobrahe
65% similarityShared character: neck pickup, neck, tight tracking
Beetronics Whoctahell V2 Low Octave Beeast
Beetronics
57% similarityShared character: tight tracking, one octave
Mooer Tender Octaver MKII
Mooer
57% similarityShared character: tight tracking, one octave
smallsound/bigsound Buzzz
smallsound/bigsound
56% similarityShared character: one octave, fuzz, aggressive playing
See all alternatives to the Fulltone Ultimate Octave (cheaper + boutique) →
Questions people ask
What are good alternatives to the Fulltone Ultimate Octave?+
The closest matches in character are the EarthQuaker Devices Tentacle, the KMA Machines Mandrake, the Tycobrahe Octavia. Budget picks: Behringer Octavia Octave Fuzz, EarthQuaker Devices Tentacle V2. Boutique upgrades: Roger Mayer Octavia, Roger Mayer Octavia Classic, Meris Enzo X.
What pairs well with the Fulltone Ultimate Octave?+
Strong matches from rig and tone-complementarity evidence: Laney RB3 Richter Bass Amp, Boss CEB-3 Bass Chorus Ensemble, Ceriatone HRM 50 — Laney RB3 Richter Bass Amp's own mid-forward character is the real reason this is worth trying.
How much does the Fulltone Ultimate Octave cost?+
Around $164.99 (live listing price, updated Oct 24, 2026).