The Blammo! Slob is an analog octave-up fuzz pedal with a blend control, made by BLAMMO! Electronics. It is the company's version of the Prescription Electronics COB (Clean Octave Blend), a pedal that takes the classic Octavia circuit, the one associated with Jimi Hendrix, and adds a blend control and more output volume1. BLAMMO! unveiled the Slob in March 2021 as a hand-made compact clone of the COB with a few updates, including soft switching and quieter operation2.
What it does and how it differs from the COB
The COB, or Clean Octave Blend, was a pedal from Prescription Electronics that takes the classic Octavia circuit and adds a blend control and more output volume. BLAMMO! describes the SLOB as its version of the COB, "but with a few convenient updates"1. Delicious Audio's Paolo De Gregorio called it "a fairly simple but great-sounding 3-knob octave-up fuzz pedal"2.
The updates over the original design, according to the maker and the press coverage:
- A no-click relay based true-bypass switching system, rated for 3x as many cycles as the old clicky style footswitch1
- A smaller enclosure with top-mounted in/out and power jacks, making it more compact and pedalboard friendly1
- A beefed-up power filtering section to clean up more of the background muck2
- Signal path diodes matched to the forward voltage to maximize the octave effect's analog sting1
- A manufactured PCB designed by BLAMMO!2
"The bypass system has been upgraded to a no-click relay based true-bypass footswitch."
Controls and power
The Slob is a three-knob pedal2. The Octave knob sets the intensity of the higher octave, which is how the player blends the octave-up fuzz against the dry signal2.
| Item | Detail |
|---|---|
| Effect type | Analog octave-up fuzz with blend control1 |
| Knobs | 3, including an Octave knob that sets the intensity of the higher octave2 |
| Bypass | True bypass, no-click relay based footswitch1 |
| Power | 9 volt DC, standard 2.1mm center negative adapter, Boss style1 |
| Current draw | 32mA1 |
The Slob takes a standard 2.1mm center negative 9 volt DC adapter, the Boss style used by most pedalboard supplies1. Its 32mA current draw is well within what a typical isolated supply output provides1.
Price and availability
BLAMMO! Electronics lists the Slob at $149.99 on its product page as of October 20261. At its unveiling in March 2021, Delicious Audio described it as "a hand-made $149 compact clone of the COB"2.
The Slob sits in a wider BLAMMO! range of fuzz designs, including the Skronk Machine, a modernized Zonk Machine with NOS Russian germanium transistors, and the Buzzaround, a limited take on the Burns Buzzaround3. Players comparing octave and pitch effects alongside fuzz may also find the Octave & Pedals page useful.
Videos
Demos In The Dark
Guy Incognito
Questions
Is the Blammo! Slob true bypass?
Yes. The Slob uses a no-click relay based true-bypass footswitch. BLAMMO! Electronics says the relay switching is rated for three times as many cycles as the old clicky style footswitch it replaces, and Delicious Audio noted the bypass system as one of the upgrades over the original COB design.
What power supply does the Blammo! Slob use?
The Slob runs on a standard 2.1mm center negative 9 volt DC adapter, the Boss style supply most players already own. BLAMMO! Electronics lists the current draw at 32mA, so a standard isolated pedalboard supply output will run it.
What is the difference between the Slob and the Prescription Electronics COB?
The Slob is BLAMMO!'s version of the Prescription Electronics COB (Clean Octave Blend), a hand-made compact clone of the circuit. The updates include soft, no-click relay based true-bypass switching, quieter operation, a smaller enclosure with top-mounted jacks, beefed-up power filtering and signal path diodes matched to the forward voltage to maximize the octave effect's analog sting.
Where is the Blammo! Slob made?
BLAMMO! Electronics builds the Slob by hand in Portland, Oregon, using a manufactured PCB designed by BLAMMO!.
How much does the Blammo! Slob cost?
BLAMMO! Electronics lists the Slob at $149.99 on its product page as of October 2026. When the pedal was unveiled in March 2021, Delicious Audio described it as a hand-made $149 compact clone of the COB.
What does the blend knob do on the Slob?
The Slob is a three-knob pedal, and the Octave knob sets the intensity of the higher octave, letting you blend the octave-up fuzz against your clean signal.
Sources (3)
- SLOB | BLAMMO! Electronics, BLAMMO! Electronics
- Blammo! Slob Clean Octave Blend Fuzz, Delicious Audio, 2021-03-23
- BLAMMO! Electronics Buzzaround Fuzz, Delicious Audio, 2022-06-08
