Pedals Overdrive / Distortion has two switchable channels sparment and cumulative.
The overdrive (Jekyll) uses the JRC4558 op-amp used was the era in las TS808.
The distortion (Hide) ranges from blues-rock to heavy metal through all intermdiaire.
EQ button and two "types" of sounds (Sharp / Blunt) per channel.

cf: http://www.visualsound.net/Pedal_jh.htm

UTILIZATION

Operation is easy trs, each channel as represented by an LED when active (green Jekyll and hide in red).
The stomp switch is sturdy and spacing allows you to activate the simultanment if desired. Note that it is possible for example to make a crunch sound with p't'tit Jekyll and one foot pressure switch is in either clean distortion ...
The principle is simply gnial and allows you to add 3 sound distortion on the amp!

The trs rglages are effective and give good examples fournits based departure.

Note that a power supply (not included) is welcome for all that precde consumes a lot of batteries ...

SOUND QUALITY

The sound suits me perfectly.

The overdrive of the Jekyll allows me to have a good quality of TRS crunch and distortion allows me to swing the big sound (always with the quality!). I use the Distortion channel of the amp to sound "rock".
The active filter does not color the sound too.

OVERALL OPINION

I have for over a year now and I could not do without it, she does it all!
Imagine a sound saturated crank the pedals and you!

I find, in addition to the report quality discount (I pay mine 160).
I would do without this choice problem.
But do not buy it, we will not be like that some initisabnficier this gem! )