I hear unwanted hum or buzz. What can I do?

This is usually power or cable related. Start with one guitar, one amp, and two known-working cables. Avoid noisy daisy chains, unstable power supplies or power outlet. If the issue continues, send us a message through the Amazon order page.

My guitar sounds very quiet, muffled, distorted, or has no sound. What should I check?

Check cables. If guitar is in OUTPUT and amp in INPUT, signal is reversed—weak, muffled, or no sound. Correct: Guitar → INPUT, OUTPUT → Amplifier. Ensure 1/4" plugs are fully inserted.

Can the XVI R-13 be paired with high-gain distortion and fuzz pedals?

Yes. The XVI is voiced specifically to harmonize with overdrive and fuzz.

Does the MOD knob adjust modulation rate or depth?

The MOD knob adjusts modulation depth only, adding a chorus-like shimmer to the octave voices. The modulation rate is pre-tuned to an optimal sweet spot.

How well does the XVI perform with an electric bass guitar?

It tracks exceptionally on bass. For optimal response below low G on the E string, use the neck pickup with tone open and play with clean, articulate attacks.

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JOYO Polyphonic Octave Guitar Pedal, Independent Sub & Upper Octave with MOD Modulation Effects & Dry Blend, True Bypass (XVI R-13)

Product ID: 205051887

Details

Brand
JOYO
Color
Pink
Item Weight
248 g
Product Dimensions
4.29"L x x
Style
Octave MOD

🌊Built-in modulation phaser/vibrato

🎸Polyphonic octave tracking

🎚️Independent sub & upper octave controls

111376CFA

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Description

🎛️ Elevate your sound—octave mastery with modulation flair!

ADD MOVEMENT DEPTH - MOD control injects lush phaser/vibrato effects exclusively on octave signals for dynamic texture.
BUILT TO ROCK GLOW - Rugged aluminum chassis with ambient LED modes keeps you stage-ready and visually in control.
KEEP YOUR PURE TONE INTACT - True bypass ensures zero signal loss or coloration when pedal is off—your guitar’s voice stays authentic.
MASTER YOUR MULTI NOTE MAGIC - Polyphonic tracking handles chords flawlessly for rich, layered soundscapes.
TAILOR YOUR TONE WITH PRECISION - Independent SUB and UPPER octave knobs let you sculpt deep lows and sparkling highs.

The JOYO Polyphonic Octave Guitar Pedal (XVI R-13) delivers advanced polyphonic octave tracking with independent sub and upper octave volume controls, plus a dedicated modulation knob for phaser/vibrato effects. Featuring true bypass and a durable aluminum chassis with ambient LED lighting, it offers professional tonal flexibility and stage-ready reliability. Perfect for guitarists seeking rich harmonic layers and dynamic textures in a compact, roadworthy pedal.

Specifications

ASIN	B085Q2GNZK
Amperage	90 microamps
Audio Output Effects	Modulation,Pitch-Shifting
Best Sellers Rank	#1,852 in Musical Instruments ( See Top 100 in Musical Instruments ) #24 in Electric Guitar Effects #27 in Guitar Signal Path & Pedal Tuners #1,052 in Guitar & Bass Accessories
Brand Name	JOYO
Color	Pink
Connector Type	1/4-Inch Right Angle, 1/4-Inch Right Angle to Straight, 1/4-Inch Straight
Controls Type	Knob
Customer Reviews	4.2 4.2 out of 5 stars (135)
Hardware Interface	1/4-inch Audio
Included Components	Guitar Effect Pedal (Not included power supply), User Manual
Item Dimensions	4.29 x 1.89 x 2.64 inches
Item Dimensions L x W x H	4.29"L x 2.64"W x 1.89"H
Item Type Name	Electric Guitar Electronics
Item Weight	248 g
Manufacturer	ShenZhen JOYO Technology
Manufacturer Part Number	031-00R13-0010
Model Name	JOYO XVI Octave
Model Number	Manufacturer-JOYO-R13-0010
Number of Items	1
Number of Packs	1
Power Source	Corded Electric
Signal Format	Digital
Style	Octave,MOD
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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