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AMBER 40 is a two-channel guitar head of classic tube amp architecture built using
analogue (except for reverb) semiconductor components. The analysis of classic tube amp work
made it possible to create an amplifier which features non-linearity, compression and typical for
tubes distorted sound.. A distinctive feature of AMBER is the power amp overdrive and the output
power control system. Thereby the volume change for overdriven tones is made by changing the
output power of the amplifier which guarantees fixed timbre within full volume range. The
architecture of transformer power amplifier also allowed to achieve constant output power for 4, 8
and 16 ohm speakers.
AMBER 40 features a CLEAN/CRUNCH type channel and OVERDRIVE type channel. Each of
these channels has its own passive EQ section and is able to work in one of six modes with
different compression and gain. The possibility of saving channel modes extends the range of
available sounds while playing. Power LEVEL function (which can also be saved) makes it possible
for the user to control the volume while playing.
The whole amplifier is complemented with the high-quality digital reverb, enabled FX loop, four
push-buttons footswitch and MIDI input and output. The selected footswitch mode allows to adjust
the functionality of the amplifier to the preferences of the player. There are six modes: from the
simplest, as in typical two-channel amps, to the modes using banks and presets. The MIDI input
allows to control the amplifier by the MIDI controller, while the MIDI output allows to control the
MIDI effect by the amp.
Front panel
See FIG. 1 on the inner side of the user manual cover.
1. INPUT
– guitar input
2. GAIN
– CLEAN/CRUNCH channel gain control
3. MODE
– CLEAN/CRUNCH channel mode up/down switch
4. MODE - CLEAN/CRUNCH channel mode indicator
5. BASS
– CLEAN/CRUNCH channel low-end tones control
6. TREBLE
– CLEAN/CRUNCH channel high tones control
7. GAIN
– OVERDRIVE channel gain control
8. MODE
– OVERDRIVE channel mode up/down switch
9. MODE
– OVERDRIVE channel mode indicator,
10. BASS
– OVERDRIVE channel low-end tones control
11. MIDDLE
– OVERDRIVE channel mid range control
12. TREBLE
– OVERDRIVE channel high tones control
13. FX LOOP
– FX LOOP status indicator (RED – active)
14. FX LOOP, STORE
– up/down switch, upwards – on/off of the FX Loop, downwards – store
to memory
15. REVERB
– reverb volume
16. LEVEL
– power/volume LEVEL up/down switch
17. LEVEL
– power/volume LEVEL indicator
18. MASTER
– overall output power/volume control
19. POWER
– mains power switch
Back panel
See FIG. 2 on the inner side of the user manual cover.
1. MAINS input
2. Speaker outputs
3. MIDI IN input
4. MIDI THRU/OUT output
5. EFS-1 footswitch input
6. FX LOOP signal -10dBu/+4dBV level switch
7. FX LOOP signal RETURN input
8. FX LOOP signal SEND output
Summary of Contents for AMBER 40
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