So we have a boss pedal in the line twin, as the RC-20XL.

I think my fellow testers have well explained the thing: a model of all that is digital!

A point to add: the ability to connect the keyboard on the device, provided to switch the button on the front side.
Note also can connect to two amps in stereo on stage or else!

Finally, we can put an expression pedal (boss of course, the same story with the SAP adapter ... € 24 with us anyway!) For real-time to vary the speed of HP.

Not because I put 10 for the digital, there may be more opportunities to put in the beast.
But hey, there, I compare with the Holy Grail of the Univibe: THE Roger Mayer (Pope effects Hendrix) Voodoo Vibe ... I had the privilege of trying to Angel Music (Valenciennes). [Besides, she has yet to be! I was not able to offer it to the final (> 400 €)]
Indeed, one of Mayer includes a tremolo with selectable waveform.
In fact, the Voodoo Vibe is all analog!

As for the integrated overdrive, I'm pretty lenient ...
It is nice to add a crunchy note no more ...
But after the turn to starboard, is unthinkable without an equalizer beefy ass!
So here, add a disto OK, but if it is not able to set a minimum with a tone knob is a blow to stack with a total of 36 effects of the spray!

Hence the 5

UTILIZATION

I agree, the manual is pretty cheap ...

Anyway, after that the experiment for each
What matters is to find the sound you are looking.

For me, it was the sound of Jimi Univibe for my Start and that of Hammond for my keyboard: John Lord (Deep Purple) & Bernie Worrell (Parliament Funkaedelic)

Otherwise the consequences of setting the knobs are clear on the sound that comes out of your amp

SOUND QUALITY

While there, as I have the characteristics of sake, both here I want to tell you how I felt the way jimiz of sound when the knob to select the effect on IV!

THE best recording of Hendrix fire to feel the song remains the Univibe Machine Gun Live at the Fillmore East (soliiiiiii anthology for my part

Then with the keyboard, then the knob on I or II and rolls Poupoule!
Easily get the sound of Bernie the Elephant as the Colonel's Ghost Buckethead Claypool Bernie Brains (C2B3 for short) when he puts his two agreements on the continuous p ***** of Buckethead's solo (I recommend warmly album released in 2004)

In all, the boss takes up the pavement compared to the voodoo vibe ... but without the tremolo!
As it were, the sound is roots, I found easily on the SRV Cold Shot (album Could not Stand The Weather).

OVERALL OPINION

In short I am not disappointed, for a price divided by two compared to the roger mayer!

9 Pasqua, saying that Mayer is the very high end, but for the pros (Clapton used it on any album I know ...) or the rich (such p'tét c! ?!?)

That's my opinion after receiving two weeks ago and tested on Start and keyboard ...

8 because the addition of the overdrive is a reflection of what to do or not do better: add the phasing or other dac but if you can not adjust as you like ...
It is one that can do more can do less or I start something without going all the way!
Too bad ...