What kind of pedal is the JF-12?

JF-12 is an octave fuzz pedal with FUZZ, TONE, VOLUME, and a Normal / Mid Cut switch. It is best understood as a fuzz-based effect with octave-up character, not as a clean octave-down or studio-style pitch-shifting pedal.

Why does the octave effect seem weak or different from what I expected?

The octave-up effect is part of the pedal’s fuzz character, so it is usually more noticeable on single-note lines, riffs, and higher-register playing. It is not designed to behave like a separate clean octave pedal on every note or chord.

Why won’t the pedal turn on, or why is the LED not lighting?

Use a 6F22 9V battery or a DC 9V center-negative power supply, and fully insert a 1/4" / 6.35mm plug into the INPUT jack when testing. The package does not include a battery or adapter. When engaged, the LED should light red.

Why do I hear hiss, buzzing, or squealing when the effect is on?

Fuzz pedals can sound more aggressive and may reveal noise from power supplies, cables, pickups, or complex pedal chains. Test JF-12 by itself with known-working cables and a regulated power source, then make smaller FUZZ and VOLUME adjustments.

Can I use the octave section by itself without fuzz?

JF-12 is designed as an octave fuzz pedal, so the octave-up character is part of the overall fuzz effect rather than a fully separate clean octave section. If you want a pure standalone octave pedal, this may feel different from that type of design.

Octave And Fuzz | Desertcart Norway

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Description

🎸 Unleash vintage fuzz fury with modern tonal mastery!

SEARING OCTAVE UP - Activate the octave footswitch to add shimmering upper harmonics that make your riffs impossible to ignore.
CLASSIC 60 S SNARL - Authentic germanium fuzz delivers thick, snarling tones with buckets of sustain for legendary rock vibes.
TRUE BYPASS PURITY - Preserves your guitar’s natural tone with zero signal loss when the pedal is off—pure sonic integrity.
PRECISION TONE CONTROL - Mid-Cut toggle and responsive Tone knob let you sculpt everything from tight rhythms to biting leads.
RUGGED ROAD READY BUILD - Durable aluminum alloy housing stands up to heavy gigging and pedalboard abuse with style.

The JOYO Octave Fuzz (Voodoo JF-12) is a germanium-powered guitar pedal that recreates iconic 60's fuzz tones with added octave-up shimmer and a mid-cut switch for versatile sound shaping. Featuring true bypass for pristine signal integrity and housed in a tough aluminum chassis, it’s designed for players seeking classic fuzz with modern reliability and tonal flexibility.

Specifications

ASIN	B085QJRQ3C
Amperage	6 microamps
Audio Output Effects	Distortion,Fuzz
Best Sellers Rank	#429 in Musical Instruments ( See Top 100 in Musical Instruments ) #3 in Electric Guitar Effects
Brand Name	JOYO
Color	Green White
Connector Type	1/4-Inch Right Angle, 1/4-Inch Right Angle to Straight, 1/4-Inch Straight
Controls Type	Knob
Customer Reviews	4.0 4.0 out of 5 stars (527)
Hardware Interface	1/4-inch Audio
Included Components	Effect Pedal (Not included power supply or battery), User's Manual
Item Dimensions	4.72 x 2.17 x 3.82 inches
Item Dimensions L x W x H	4.73"L x 3.86"W x 2.17"H
Item Type Name	Electric Guitar Electronics
Item Weight	390 g
Manufacturer	ShenZhen JOYO Technology
Manufacturer Part Number	031-0JF12-0019
Model Name	JOYO Voodoo Octave
Model Number	Manufacturer-JOYO-0JF12-0019US
Number of Items	1
Number of Packs	1
Power Source	Corded Electric,Battery Powered
Set Name	JOYO Voodoo Octave
Signal Format	Analog
Style	Germanium Fuzz
Voltage	9 volts_of_direct_current
Warranty Description	1-year manufacturer warranty we stand behind the quality of our product. This warranty covers any manufacturing defects in materials or workmanship for one year from the date of purchase. If you encounter any issue, please contact us directly. We will provide a replacement, repair, or refund after we receive and verify the returned item.

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1078 kr

Duties & taxes included

In stock

Sold byAmazon NorwayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Norway.

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TrustScore 4.5 | 7,300+ reviews

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Octave & Fuzz

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