User manual

2 - Using AmpliTube™ LE

Using AmpliTube™ LE

Connect your guitar to your computer

To achieve the best input signal when using AmpliTube™ LE be sure you

have an "instruments input" on your audio interface. The “instrument

input” needs a gain control and commonly is an high impedance input, this

means that the pickups of your guitar will find an input that matches that

found in guitar amplifiers.

NOTE: Normal +4 dB low impedance line input (i.e. the ones you would

normally use for a synth or a keyboard) are not ideal for directly connec-

ting the guitar because guitar pickups are not designed to deliver such an

high level and on a low impedance load, in these conditions the guitar

sound will be weak.

If your interface does not have a high impedance input, you will need to use

a small mixer with a good high-Z line input to which the guitar can be con-

nected. The best quality connection is obtained using a very good micropho-

ne preamplifier with the addition of a quality D.I. box to which the guitar

will be connected. This setup will deliver the best possible sound because

the signal from the pickups will be treated with extreme sensitivity by the

D.I. box, as it is designed expressly for these requirements.

Input Level – optimal settings

For an optimal sound quality the signal that feeds into AmpliTube™ LE from

your audio interface should be within a certain level range. AmpliTube™ LE

shows the input signal level with a very simple three LED meter (fig. 1):

yellow shows that a too little signal is present

green indicates that the signal is OK

red which should light only occasionally, shows that the input is

close to overload.

AmpliTube™ LE does not have an “input level” control, because it’s very

important that the level is actually correct at the analog to digital converters

of the audio interface.

During normal playing the green LED should be the one that lights most

often. If the yellow one is the one that’s more often lit then increase the gain

of your preamplifier or audio card break box; if the red one is blinking then

reduce it slightly.

Chapter 2

2.1

2.2

fig. 1