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4. Starting up

4.1 Connecting and switching on

Before connecting to mains, please ensure that your

local mains voltage (e.g. 120V in the USA, 230V in Euro-

pe) matches the voltage rating of the device, which is

printed on the type label on the rear side of the unit.

Connecting to the wrong mains voltage may cause

serious damage to your amplifier!

If your amp is fitted with a mains voltage selector, the

voltage rating indicated on the voltage selector is

relevant.

Make sure the phantom power (see 5.3 phantom

power) is not switched on unintentionally.

Then connect all cables according to your application

and switch the device on. The green power LED indica-

tes operational readiness.

4.2 Level adjustment

By proper level adjustment you adapt the amplifier to

your signal sources (guitar pick-ups, microphones, etc.).

For this purpose keep the master control initially fully

anticlockwise.

Set the line/mic switch to position mic if you are using

a microphone. Position line is suitable for all types of

guitar pickups and most other sources.

The mute switch should not be pushed.

Now gradually increase the appropriate gain setting

as far as possible but without triggering the red clip

indicator, even when you play loud. Thereby you keep

some headroom for unexpected peak levels.

Very strong sources may cause a clipping warning

despite a low gain setting. Such sources can be attenu-

ated first by pushing the high/low switch.

Finally set the desired volume using the master control.

• If the gain setting is too low, the amplifier may not

reach the desired volume, or distracting noise may

become noticeable.

• Setting the gain too high causes distorted sound (clip-

ping). The clip light will warn you before this happens.

• If you use an instrument with a volume control, start

off with full volume but reduce it if the clip indicator

lights up early and the level adjustment is difficult.

• Please ensure there is always enough battery power

in your (active) pick-up system. Humming and sizzling

may be caused by an empty battery.

• If several inputs are used simultaneously, you also

determine the mixing ratio by the individual gain

settings.

• If several inputs are used simultaneously, you can

control the mixing ratio by the respective channel

volume controls.

• Also check the clip indicator while playing through all

inputs at the same time.

• The gain controls of any unused inputs should stay

fully anticlockwise.

5. Functional characteristics

5.1 Tone controls

The tone controls of the amplifier are a high-quality

sound modification tool that preserves the natural

tone of instruments and voice and allows you to apply

targeted accentuations.

If bass, middle, and treble are in center position,

contour is fully anticlockwise, and the colour switch is

not pushed, the tone controls are neutral and have no

influence on the sound.

The amplifier will already provide a very pleasant,

natural sound when all controls are in neutral position,

which you can then principally alter with the colour

filter (in channel 1). This will reduce the midrange and

bring out the trebles. The sound becomes more open

and lighter and is particularly suitable for finger picking

techniques. The tone controls can support or attenuate

the effect of the colour filter (see illustration below).

colour

bass

middle

colour

bass

middle

Please note:

The tone controls have an eff ect on the signal level. If

the clip indicator fl ashes more frequently, reduce the

level a bit using the gain control (see also 4.2).

treble

With colour-filter

(switched pressed)

reduce treble

to soften possible

harshness

treble

Without colour-filter

(switch not pressed)

boost treble to

brighten the sound