JFET Bass guitar preamp AMT «Bass crunch» BC-1

АМТ Electronics is happy to present its new product – 2-channel preamp for bass guitar - AMT «Bass crunch» BC-1.

The preamp has been built on the basis of the custom technology by АМТ using JFET emulation of the vacuum tube range clipping. The wide adjustment range in combination with rich functional possibilities that can only be found in a stomp box have considerably increased the preamp versatility.

«Bass crunch» BC-1 preamp is based on a two-channel circuit.

CLEAN channel shapes the classic bass guitar sound characteristic for «old» amplifiers and allows both velvet transparent sound and slight compressed overdrive depending on the position of Gain control.

DRIVE channel contains a number of over amplification stages and is intended for obtaining the modern sound from clean to totally overdriven one.  The High Mode provides additional possibilities in terms of the range enrichment towards higher sound density and aggressiveness. The adjustable 3-position mid-range filter combined with deep adjustments along the frequency ranges offer a musician its rich possibilities related to shaping of the overdriven tone range.

Controls:

Clean
Level – output signal level adjustment  
High – high frequencies adjustment
Mid – middle frequencies adjustment
Low – low frequencies adjustment
Gain – channel sensitivity adjustment

Drive
Level – output signal level adjustment  
High – high frequencies adjustment
Mid – middle frequencies adjustment by means of rejecter filter Freq. notch
Freq. notch – cutout frequencies switch (rejecter filter) 500Hz, 330Hz, 230Hz.
Low – low frequencies adjustment
Pre. Notch – rejecter filter switch before Drive stage. 700Hz, 400Hz.
Gain – channel sensitivity adjustment  

Overall Controls
Blend – signal level balance adjustment between channels Clean and Drive
Master volume – BC-1’s overall output level adjustment.

Footswitch DRIVE – Drive channel on/off
Led – Drive channel on indicator
Footswitch HI/LO – Drive channel increased sensitivity on/off.
Led – HI/LO mode with Drive channel increased sensitivity on indicator.

Connections

Right Panel
INPUT – instrument input of the preamp
SEND FX – signal send to aux effect
RETURN FX – aux effect signal return
 
Left Panel
OUTPUT – direct output to power amp.
CTRL OUT – AMT TS-2MIDI aux convertors control output
CAB.SIM. – direct output to mixer’s line input.
DI OUT – balanced output intended for connection of devices equipped with balanced inputs.

Power
DC 18V – for connection of power adapter

28.05.2010