would this work for a 'sensitive' instrument like a 'piezo pickup' lap harp?...thanks

It'll work, but it's simply on or off type sound. It doesn't respond to playing quietly very well, it sounds like it has a noise gate that kicks in when you pick harder. If you want full on octave fuzz then it will do the trick. But not for dynamic playing such as a fuzz face.

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MXR M103 Blue Box™ Octave Fuzz

Product ID: 48519129

Details

Brand
MXR
Colour
Blue
Item weight
227 g
Style
Compact
Voltage
9 Volts

⚡9V battery or adapter powered

🎸Octave-down fuzz effect

🔊Massive low-frequency output

EC$932

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎸 Command the stage with the MXR Blue Box™ — where fuzz meets fearless low-end!

COMPACT YET COMMANDING - Sleek, portable design fits effortlessly on any pedalboard without sacrificing power.
DIVE DEEP INTO SONIC CHAOS - Unleash monstrous low-end frequencies that command attention and intimidate the stage.
POWERED FOR ENDLESS SESSIONS - Runs on a single 9V battery or Dunlop’s ECB-003 adapter for uninterrupted creativity.
EVERY PLAY IS A NEW ADVENTURE - Known for its unpredictable, chaotic personality that keeps your sound fresh and exciting.
TWO OCTAVES OF FUZZED BRILLIANCE - Transform your guitar tone with a unique octave-down fuzz that redefines your soundscape.

The MXR M103 Blue Box™ Octave Fuzz pedal delivers a powerful analog fuzz effect combined with two octaves down, producing deep, rich low-midrange tones. Compact and powered by a 9V battery or optional adapter, it’s designed for guitarists seeking a bold, chaotic sound that transforms every session into a unique sonic experience.

Specifications

ASIN	B0002GY9Y0
Amperage	9 Milliamps
Audio Output Effects	Fuzz, Eighth down, Signal mix
Best Sellers Rank	66,296 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 16,899 in Recording & Computer
Brand Name	MXR
Colour	Blue
Connector Type	1/4 inch audio jack
Controls Type	Knob
Country of Origin	Taiwan
Customer Reviews	4.3 4.3 out of 5 stars (101)
Global Trade Identification Number	00710137006546
Hardware Interface	1/4-inch Audio
Included Components	9 volt battery
Item Weight	227 g
Manufacturer	Jim Dunlop
Manufacturer Part Number	11103000001
Model Name	11103000001
Model Number	11103000001
Number of Items	1
Number of Packs	1
Power Source	Works with a DC power supply
Signal Format	Analog
Sound Profile	Low-midrange with prominent harmonics
Style	Compact
UPC	710137006546 962327363834 710137065208
Unit Count	1 Count
Voltage	9 Volts

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