1. Power Switch
On / Off Switch for mains power to the amplifier.
2. Standby Switch
Controls H.T. or high voltage to the valves to allow
them to attain correct working temperature before playing.
To prolong the life of the valves it is always advisable to
switch on the Mains Power Switch (item 1) about 2 minutes
before switching on the Standby (item 2).
On switching off, the Standby should always be
switched before the Power Switch.
The standby facility is particularly useful between sets
and before playing, as it allows you to keep the valves
operating at a functional temperature but without any sound
being produced.
3. Deep Switch
The Deep Switch adds a tuned or resonant bass boost to
your sound, increasing bottom end thud, without making
your tone woolly around the all important low end.
4. Presence Control
Adds higher frequencies to the guitar tone, creating
crispness and bite. Turning this up will make the sound
more cutting and in your face.
5. Treble Control
Controls the high frequencies of the guitar tone, making
your guitar sound brighter when increased.
6. Middle Control
Dictates the middle register of the amplifier. Turning
this up will make your guitar sound fatter. Conversely
reducing the amount of middle in your tone will result in a
sharper and thinner guitar sound for the classic “scooped”
tone.
7. Bass Control
Controls the amount of low frequencies or bottom end in
your tone.
8. Tone Shift
The Tone Shift Switch reconfigures the tone network
components to give a new dimension to passive tone
shaping. With the switch selected to the “in” position and
the Middle Control (item 6) turned down the result is a
scooped mid sound ideal for certain classic metal styles.
Reverb
9. Channel B
Controls the reverb level on Channel B.
10. Channel A
Controls the reverb level on Channel A.
Ultra Gain / Channel B
11. Volume
Governs the volume level of Channel B.
12. Lead 1 / Lead 2 Switch
The DSL 100 and DSL 50‘s Channel B features two
modes. The first, Lead 1, gives an open high gain crunch,
with traditional Marshall characteristics, similar to a hot-
rodded JCM 800 2203 master volume. The Lead 2 mode
however gives a mid-boosted tone coupled with even
higher gain possibilities.
13. Gain
Controls the gain level for Channel B. As the amount of
gain increases so will the distortion level in your sound.
14. LED
Indicates when Channel B has been selected.
15. Channel Switch
Selects Channel A or Channel B.
16. LED
Indicates when Channel A has been selected.
Classic Gain / Channel A
17. Volume
Governs the volume level of Channel A
18. Clean / Crunch
As with Channel B, Channel A features two modes.
The first, Clean, is reminiscent of an early 1959 Plexi Super
Lead head. Depending on Gain settings (item .19) this
mode will take you from clean to a controlled Plexi style
crunch. Crunch will take you up to a JCM 800 2203 style
grind.
19. Gain
Controls the gain level for Channel A. As the amount of
gain increases so will the distortion level in your tone.
20. Input
Jack input for guitar.
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