GMF Ai1 Owner's Manual

Thank you and congratulations on your choice of this product.
Features:
This is a full‐featured *Acoustic Preamp/*DI/*Headphone Amp/*Acoustic Interface. Whether at a local open
mic night or at a major concert venue, you will be able to dial in the clear natural acoustic sound and route it
to the stage PA through a balanced XLR output. You can also use the Ai1 to patch your acoustic instrument
into your home theater system to play your acoustic instrument without an expensive amplifier, or just plug in
a pair of headphones for private listening.
As a rule of thumb for all of our products, begin with all of the controls at the mid point (12:00 o'clock) with
the "NOTCH" and "SHAPE" switches "OFF". This is a medium gain setting with FLAT frequency response.
The "INPUT GAIN" control will be the first control that you will want to dial in. The "INPUT GAIN" is not a
volume control, rather this control sets the level of amplification applied to the input signal to boost it to a
useable level. The reason this is adjustable is to accommodate a wide range of pickup devices. For instance if
you are using a high output active pickup system you will want to use a lower setting on the "INPUT GAIN"
than say if you are using a passive type pickup system. You will want to use the highest "INPUT GAIN" setting
you can without overdriving or distorting the signal. To achieve this, while playing, slowly turn the "INPUT
GAIN" up (clockwise) until you begin to hear some distortion, then back the "INPUT GAIN" down (counter‐
clockwise) until the distortion disappears. This will give the Ai1 the most signal to work with and the best
signal to noise ratio. Once you have determined the best setting for the "INPUT GAIN" we recommend that
you take note of this setting and also the settings on your instrument controls for future reference.
Precautions:
1) Read and follow these instructions before operating the unit.
2) Please heed all safety warnings and keep these instructions for future reference.
3) Do not use this apparatus near water or moisture.
4) Clean only with soft, dry cloth.
5) Do not install near a heat source such as radiators, hear registers, stoves, or other apparatus that
produce heat.
6) Only use attachments/accessories specified by the manufacturer.
7) Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way, such as liquid has been spilled or objects have fallen into the unit, the unit has
been exposed to rain or moisture, does not operate normally, or has been dropped.
8) Battery not included. Use AC adaptor for ultimate performance.
Power Requirements:
• Battery: Standard 9V battery (Power consumption approx. 30 mA)
• Power Supply: 9V DC (Regulated) , 50 mA minimum
Attention: Use a "DC" Power Supply Only! Failure to do so may damage the unit and void the warranty
Ai1 OWNER'S MANUAL
Getting Started: