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JOYO JF-38 Electric Guitar Effect Pedal Roll Boost Clean Volume True Bypass Design

JOYO JF-38 Electric Guitar Effect Pedal Roll Boost Clean Volume True Bypass Design

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  • China Warehouse
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Classic A circuitry, a flip of the switch gives you up to a 35dB boost.
Supports a maximum input of 18V DC voltage. 
The pedal can also function as a volume limiter.
The sound of the Roll Boost pedal is transparent, and the gain knob fully functional to add some sparkle and a slight boost.
Features True By-Pass Wiring.

Model: JF-38
Color: Yellow
Material: Aluminum alloy
Input impedance: 1Mω
Output impedance: 1Kω
Running current: 2mA
Power: 6F22 9V battery / DC 9V adapter (Neither included)
Item size: 11.7 * 6.7 * 5.1cm / 4.6 * 2.6 * 2.0in
Item weight: 180g / 6.3oz
Package size: 13 * 7.5 * 6.2cm / 5.1 * 2.9 * 2.4in
Package weight: 220g / 7.7oz

Package List:  
1 * Effect Pedal
1 * User Manual (English & Chinese)

This unit is without battery, put on the battery by opening the back cover with a screwdriver.
Customer Reviews

Average Rating:


based on 8 Customer Reviews

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  • By m***m

    May 16, 2015

    Good seller

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  • By n***r

    May 13, 2015

    spot on A+++ nice bit of kit

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  • By j***1

    May 12, 2015

    Awesome product. Great value. Good seller.FAST delivery. Thanx.

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  • By s***s

    April 21, 2015

    Fast and good transaction. Everything as I expected. Thank you.

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  • By m***7

    April 15, 2015

    Received with thanks

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  • By k***7

    March 17, 2015


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  • By c***7

    March 11, 2015

    Great boost, not sure about 18v I tried but makes no difference to the headroom.

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  • By j***y

    October 15, 2013

    There are so many boosters out there for much higher prices. This one works exactly like them for half the price.

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