It is a distortion pedals transistors specially dedicates bass,
The connection could not be simpler: a jack from another output to the amp, and voila.
The pedals seem really solid, nothing moves Fawn inquitante.
Also, she is not greedy in energy trs, I put a battery that takes several months now.
In short, it's solid, and it's clear.

UTILIZATION

The knobs are quite clear: one volume, 2 qualiseurs (treble and bass), the balance between the boost and a fuzz lgrement genuine, and a saturation knob. It is trs RULES quickly, despite a lack of choice in the style of distortion.
The manual is well done, it explains the basics of the SETTING THE pedals and gives some useful presets, including the fuzz.
APRS, I still hear: "Yes, but not enough rglages everything, the drive pedals offer no boost, and even when it's limit!"
Calm down, we talk about pedals and not specially Chres transistors.

SOUND QUALITY

The distortion is effective, clear, but the sound is pretty consistent throughout, a lack of nuances in the styles of distortion, a do not provide distortion-mga-trash-metal-fusion which shakes walls, at best a good crunch.
But it's the fuzz pedals that excels: rglage with the manual, it has a style fuzz Chris Wolstenholme of Muse, a little less gain and it was the sound of Flea (which uses the p dale elsewhere, and Nate Mendel of Foo Fighters, and others, I refer you to http://guitargeek.com/gearview/70/ names and more). I use a Cort Action Bass 4 and a Roland Cube 100 bass amp, it's quite enjoyable.
Behringer BX600 on my, silent sound nice, the distortion that I needed, but the sound was quite cold. And with Roland and amp simulations, miracle: the pedals gave much thanks to sound DIFFERENT modlisations amp. It goes from a distortion of the vintage Fender Bassman simulation a modern distortion or fuzz on the simulation Ampeg. What happiness with this amp. Objectively, the pedals MRIT a 7, but with an amp just right (or Roland) is that of happiness.

Correction

For the sound Chris Wolstenholme must plutt lot tamper the knobs. I finally found a sound that works well, mea culpa.

OVERALL OPINION

I use the pedals for the past 8 months.
The pedals have a lot of advantages:
-Strong;
- A good sound trs general;
- The rglages and use simple
- A relatively low price;
- A sound gnial as long as you have a good amp.
Nanmoins,
- It's a fairly ordinary on a range of amp;
- The rglages do not have much choice in the distortion;
- Ncessite lot of tampering for a distortion that does not bleed.

In short, this is definitely not the distortion pedals of uber-lamps-dmentielle distortion, but still a good trs pedals for the price, and that's good for beginners get a hit single with distortion and giving good sound quite useful.