User Manual

English - User’s manual
1 Channel A footswitch
This footswitch activates the clean Channel A or changes the page/parameter in MIDI programming.
If the Channel A is already selected, pressing a second time will put your Le Preamp in bypass mode.
2 Channel A Input Gain
Determines the amount of gain for your clean tone. Increasing the gain can lead to more signal
distortion, and even unwanted clipping. Adjust that parameter to your taste, the gain level you will
be getting depends on Le Preamp, but also on your guitar/bass pickups level and the level of other
products such as pedals you may have inserted between your guitar and Le Preamp.
3 Channel A EQ settings
The Channel A features a passive Bass (low frequency) and Treble (high frequency) voicing section.
4 Channel A volume
Determines the output volume of the channel A, the volume is located pre-FX Loop. This knob is
inactive in Fusion mode. In case you hear unwanted clipping, try lowering the volume too and make
sure the following device in your signal path is not overdriven.
5 Fusion mode selector
Pressing the A and B footswitches at the same time will activate the Fusion mode. The Fusion switch
determines if either the Hot Fusion or the Cold Fusion modes will be activated. Read more about the
Fusion modes in the following pages.
6 Fusion Level
In Hot Fusion, this knob determines the level of Channel A that will boost the Channel B. In Cold Fusion,
this knob determines the volume of Channel A that will be added in parallel to the channel B.
7 Channel B Input Gain
Select the amount of gain for your dirty tone. Increasing the gain will lead to more distortion of the
signal, and even unwanted clipping. Adjust that parameter to your taste, the gain level you will be
getting depends on Le Preamp, but also on your guitar/bass pickups level and the level of other
products such as pedals you may have inserted between your guitar and Le Preamp. Always keep
in mind that even if we put all our attention on keeping the noise level as low as possible, increasing
the gain can lead to unwanted noises and undesirable feedback.
8 Channel B EQ settings
The channel B features a passive Bass (low frequency) and Treble (high frequency) voicing section,
plus an active Mid (medium frequency) setting with Sweep. Thanks to the Sweep parameter you will
be able to choose the center frequency of your medium range voicing.
9 Channel B volume
Determines the output volume of the channel B. The volume is located pre-FX Loop. In case you hear
unwanted clipping, try lowering the volume too and make sure the following device in your signal
path is not overdriven.
10 Tube window
With Le Preamp, you can see the finely selected tube working! Plus, depending on the channel,
that area will display different colors: Green for Channel A, Yellow for Channel B, Blue for Cold Fusion
mode and Red for Hot Fusion mode. The MIDI programming features different colors, read more
about this in the MIDI section of this manual.
11 Channel B footswitch
This footswitch activates the B "dirty" channel or enter a page in MIDI programming. If the channel B
is already selected, pressing a second time will put your Le Preamp in bypass mode.
Please note that the bypass mode is important in case you are either using several Le Preamp in
your pedalboard or if you plan to use your Le Preamp as a distortion pedal. With multiple Le Preamp
pedals, connect them in MIDI so the activation of one can defeat the others (Multi-channel function).
7 More on the Fusion modes
By pressing simultaneously the A and B switches, you will enter the Fusion mode. When the Fusion
mode is activated, pressing A and B again will defeat your Le Preamp.
7.1 Cold Fusion
The Cold Fusion puts the Channels A and B in parallel. In
other words, you will be able to adjust the level of Channel
A that will be added to the output of Channel B. This tech-
nique consisting in adding a clean signal to a more distorted
one is widely used in the studio to regain dynamics and ar-
ticulation when the dirty sounds can be too compressed for
example. The Fusion knob must be carefully adjusted and
we recommend starting very low on this value and increas-
ing gradually.
14 Two notes Audio Engineering Le Preamp