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PRODUCT DESCRIPTION
The 50 TOP Evolution valve head has been designed and voiced to give the best performance for
electric guitar. It is a fully featured professional standard valve amplifier, equally suited to live and studio work.
It is complemented perfectly by Carlsbro's 'Classic 412' cabinet, but can be used with any appropriate 8, 16 or
pair of 16 ohm cabinets.
MAIN FEATURES
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Two Channels (Clean and Drive) selected by front panel or footswitch
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Independent variable input gain for each channel
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Variable channel level (Drive channel)
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Gain Boost (Drive channel) selected by front panel or footswitch
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Powerful three band EQ
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Dual foot switchable Master volumes
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Triode/Pentode switch (half power setting)
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'Sleep' mode auto muting
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Series/parallel switchable FX loop (capable of remote activation by footswitch)
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2 x EL34 power valves in Class A/B for 50W of great British valve tone
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4 x ECC83 preamp valves
FRONT PANEL LAYOUT
1. Input. Connect your guitar here using a high quality screened audio cable.
2. Volume. This control sets the gain and level of the clean channel (Channel 1). Used in conjunction with
the master volume controls you can achieve a wide range of tones at all levels. To get the best clean
tone, turn this control fully anticlockwise and the master volume fully clockwise. Adjust this control
upward until the desired level is achieved. For a classic vintage overdriven tone, turn this control up full
and control the level with the master volume.
3. Channel switch. Used to switch between Channels 1 and 2. When depressed, channel 2 is selected
and the yellow LED will illuminate. NOTE; When using the footswitch, this switch must be 'in'.
4. Gain. This control sets the gain at the input (the inputs electrical signal strength) for the Drive channel.
Increasing the gain will increase the level of overdrive, or distortion in the tone.
5. Boost. Depressing this switch boosts the amount of gain available. With this switch depressed, the
function can be controlled by footswitch from the rear panel.
6. Level. This sets the output level of the drive channel, to allow it to be balanced with the clean channel.
7. Bass. This is used to control the level of bass or low frequency sound. Turning the control anticlockwise
will progressively decrease the level of bass.
8. Mid. This works the same way as the Bass control, but affects mid range frequencies.
9. Treble. This works the same way as the Bass control, but affects Treble or high frequencies.
Experiment with these controls whilst playing to appreciate the tonal variation possible from your amp
10. Master Volume I. Together with Master Volume II these control the overall volume or sound level from
the amp. They can be selected by footswitch, allowing two different levels to be set, for example to
allow a level boost for a solo.
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