Applies to all 3 pedals :
Very well built and dead silent, no click when switching on/off. Jacques doesn't advertise about true bypass so I really don't know if they are or not. A/B test with a Loooper didn't reveal any hearable signal loss at reasonnable volume.
I'm not too confident about the footswitch. It responds perfectly, no bump, no strange noises, but it feels delicate. Maybe a bit too delicate for my boots.
Tubeblower
This pedal is a blast for bass.
It's a light to pretty heavy overdrive but nothing extreme. It's supposed to be an enhanced Tubescreamer with extended range and added harmonic content.
I'd say the bill is full. It does that and more. There seems to be a high pass on distorted frequencies, set around 100 Hz. The lower range is very well preserved with maybe even a bit of boost.
Tones go from a very light grit on low mediums to a heavy, straight and powerful warm overdrive. Think Ampeg SVP-Pro with the drive button all the way up.
High and Low settings actually control added harmonic content, in the same way the Tone knob on a Fulltone Bass-Drive does but here you can add in bass and treble ranges separately.
This way you can keep clean lows with almost fuzzy highs.
This pedal is an excellent deal. As far as tone goes, it's somewhere between a Fulltone Bassdrive and a Tubeworks BLue Tube.
All that for a really reasonnable price. If I didn't own a Fulltone, I think I would have bought it.
Fuseblower
A very aggressive and ballsy fuzz with 3 gain knobs slicing the tonal range. A very good idea, unfortunately the choice of frequencies makes it very dirty and unprecise on bass.
Bat Fuzz
Talk about a bad slap in the face.
This pedal brings you 2 separate circuits in a single pedal, a fuzz and a heavy OD.
The fuzz sounds 100 % like a Big Muff but with a lot more power in the low medium range. Separate notes come out with a lot of fat and leaking but keep a strong fundamental behind with a bit of dignity.
The overdrive section was clearly inspired from a Boss Metal Zone, so on bass is sounds like your typical heavy metal guitar. Lower range gets a bit blurry on extreme settings but when you need to fill rhythmic guitar parts with power chords it's just perfect.
Regardless of the settings, tone is always intense, dirty and tight. You can really sculpt yourself a perfectly controlled tone.
Not as much low end as the TubeBlower but keeping a tight tone that goes through so well with as much dirt on top of it is a real performance.
So yeah this pedal is a lot of fun with great versatility as long as you're into very heavy distortion.