This is Demon's take on a much sought after sound. 
 
66-BOOST Based on FORTIN AMPLIFICATION 33 Booster - FREDRIK THORDENDAL SIGNATURE
 
Boost level control provides up to +22dB of level with added side remote 1/4” jack for channel switching with mini key switch to change orientation normally open or closed
 The 66 is a Clean Booster effects pedal for Electric Guitar. With a level boost of up to 22dB, the 66 transforms any Guitar Amp into a brute high-gain wrecking ball without distorting its sound character. A practical detail of the 66 Booster is the side-mounted channel-switching jack, which can be used to change the channel of the amplifier when the pedal is turned on.
 
 
The main features of the 66  include:
Clean Booster effects pedal for Electric Guitar
Boost Control (Adds up to 22dB of Level)
Input Impedance: 5MΩ
Output Impedance: 3kΩ
True Bypass
 
Boost
Up to +22 dB boost transform any amplifier into a metal machine
Additional side 6.3 mm jack for channel switching.
Control: Boost
Switch: Channel Switch Latch 
LED: effect on
Footswitch: Effect Bypass
Input: 6.3 mm jack
Output: 6.3 mm jack
Channel Switch: 6.3 mm jack
Power Supply connection: coaxial connector 5.5 x 2.1 mm, negative pole inside
Current consumption: 27 mA
DC 9V  Powered (Not Included)
Dimensions (W x D x H): 112 x 60 x 27mm
Weight: 360g