AMBER 40C is a two-channel guitar 1×12 combo built using VASA (Valve Architecture Semiconductor Amp). 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 overdriven sound of power amp section and the output power/volume control system. Thereby the volume change for overdriven tones is made by true change of the output power which guarantees fixed timbre within full volume range. AMBER 40C is made in three loduspeaker versions – Celestion Classic Lead 80, Celestion Vintage 30 or Celestion G12 Century Vintage. The architecture of transformer power amplifier also allowed to achieve constant output power for 4, 8 and 16 ohm speakers.
AMBER 40C 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.