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Mi-Si Simple Jack

OVERVIEW

The Mi-Si Simple Jack system features an active, battery-free

preamp designed specifically to work with the L.R. Baggs under-

saddle acoustic guitar pickup. The preamp for this system uses

Mi-Si’s custom piezo linearization scheme - allowing for the most

truthful and accurate sound from the pickup. All you have to do is

power up for 60 seconds using the Mi-Si Power Charger, providing

you with up to 16 hours of performance time.

Please follow directions carefully and you should receive years

of quality sound from this fine instrument and its electronics.

For more details and other innovative products from Mi-Si

please refer to our website - www.mi-si.com.

CHARGING AND PLUGGING IN

To charge the Simple Jack pickup, plug the Power Charger into a

100/120/220/240 V AC 50/60 Hz outlet. Then plug in the Power 

Charger 1/4” stereo plug into the preamp’s endpin jack for 60 seconds. 

Now your system is ready for 16 hours of performance time (actual 

playing time may vary depending on playing style). For best 

performance increase the charging time up to 120 seconds for 

the initial 2-3 charging cycles.
You can plug your instrument into ANY input of ANY system or

amplifier regardless of input impedance. In the same manner, you

can use ANY type of shielded MONO cable - regardless of its

capacitance. Your sound will not be altered. You can enjoy the

benefits of an active amplified system without worrying about

batteries. Use only the Power Charger provided with this package

to power up this unit. Use of any other power supply or modification

of the existing one may cause permanent damage to the system

and will void the warranty.

USEFUL TIPS

Using the Power Charger to power up your pre-

amp is truly remarkable. But what if you forgot or

lost your Power Charger? Don’t worry! Although

we don’t promote the use of batteries, in this

case all you need to power up your system is

any stereo cord and a common 9V battery.
Plug the stereo cord into your instrument. Hold

the 9V battery so that the positive terminal is

touching the Ring of the stereo plug and the negative terminal is

touching the Ground. Hold it like this for 60 seconds and you are

ready to play for 16 hours. The system will not be damaged by

accidentally connecting the battery in the wrong direction.

          www.mi-si.com                           www.martinguitar.com

+

9V

Ring

Ground

Mi-Si Simple Jack

OVERVIEW

The Mi-Si Simple Jack system features an active, battery-free

preamp designed specifically to work with the L.R. Baggs under-

saddle acoustic guitar pickup. The preamp for this system uses

Mi-Si’s custom piezo linearization scheme - allowing for the most

truthful and accurate sound from the pickup. All you have to do is

power up for 60 seconds using the Mi-Si Power Charger, providing

you with up to 16 hours of performance time.

Please follow directions carefully and you should receive years

of quality sound from this fine instrument and its electronics.

For more details and other innovative products from Mi-Si

please refer to our website - www.mi-si.com.

CHARGING AND PLUGGING IN

To charge the Simple Jack pickup, plug the Power Charger into a

100/120/220/240 V AC 50/60 Hz outlet. Then plug in the Power 

Charger 1/4” stereo plug into the preamp’s endpin jack for 60 seconds. 

Now your system is ready for 16 hours of performance time (actual 

playing time may vary depending on playing style). For best 

performance increase the charging time up to 120 seconds for 

the initial 2-3 charging cycles.
You can plug your instrument into ANY input of ANY system or

amplifier regardless of input impedance. In the same manner, you

can use ANY type of shielded MONO cable - regardless of its

capacitance. Your sound will not be altered. You can enjoy the

benefits of an active amplified system without worrying about

batteries. Use only the Power Charger provided with this package

to power up this unit. Use of any other power supply or modification

of the existing one may cause permanent damage to the system

and will void the warranty.

USEFUL TIPS

Using the Power Charger to power up your pre-

amp is truly remarkable. But what if you forgot or

lost your Power Charger? Don’t worry! Although

we don’t promote the use of batteries, in this

case all you need to power up your system is

any stereo cord and a common 9V battery.
Plug the stereo cord into your instrument. Hold

the 9V battery so that the positive terminal is

touching the Ring of the stereo plug and the negative terminal is

touching the Ground. Hold it like this for 60 seconds and you are

ready to play for 16 hours. The system will not be damaged by

accidentally connecting the battery in the wrong direction.

          www.mi-si.com                           www.martinguitar.com

+

9V

Ring

Ground

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