Information:
The Tube Zone Overdrive V4 is MI Effect's signature pedal. The Tube Zone Overdrive is a pedal with unparalleled flexibility, which excels equally well in low and high gain settings. The Tube Zone was designed with valve amp-like response and tone in mind.

Here's what the Tube Zone propose you :
    •    4 clipping stages for tube amp-like response and tone
    •    A total of 7 controls for the ultimate flexibility.
    •    Gain Control - with unique taper to provide excellent control over overdrive.
    •    Tone Control - High/Low balancing control
    •    Volume Control - with output up to 15Vpp with correct power supply!
    •    Mids Control - Dedicated midrange control
    •    Character Control - for adding 'momentum' to guitar notes, or keeping things tight
    •    Brightness Control - for controlling top end content, and to help match the Tube Zone to different amps.
    •    Internal Presence Control - to further help dial in the Tube Zone's tone.

As mentioned previously, the Tube Zone gets it's unique tone by mimicking the signal path of modern valve map, and by clipping the signal up to 4 times. This doesn't just make the Tube Zone great as a high gain pedal, but also as a low gain pedal. By having the Drive Control control multiple stages at once, you can effectively control how many of these stages clip. With the gain turned down low, it may be that just the last stage clips (or maybe last 2 stages). As the Drive increase, more stages 'light up'. This is very different to the way that pedals normally work, where one stage has it's gain changed dramatically in order to cover higher gain sounds.

One interesting feature of the Tube Zone is that I have designed drive control to have a very unique sweep. With the drive set to 50%, you're actually only using about 3% of the available gain. By designing the Drive sweep like this, you're able to get a lot of control over the lower gain sounds. So despite that fact that the Tube Zone has about 250% more gain than the most popular 'metal' pedal on the market today, you can still have very fine control over the lower gain sounds (which are just stunning!)

Character Control: This is a feature which is not available from any other manufacturer (as far as I know!). This is effectively a pre-overdrive bass control. By controlling the amount of bass in the pre-overdrive signal, you can change the character or feel of the overdriven sound. By turning character all the way down, you can get great, tight, high gain sounds, wonderful for palm-muting.

Tone Control: This is a 'balancing' control. Unlike other designs which progressively roll off the top end of your guitar sound, this tone control affects both the low and high frequencies.

Presence Control (Internal):  This control adjusts the top 'band' of frequencies. By turning this up, you can make the top band more prominent, and hence create the feeling that the lows are not as ‘boomy’. Similarly, this allows people who prefer a huge low end to dial in an even more extreme low/high ratio.

Brightness Control: This was initially an internal control (like the character control), but has been turned into an external control. The brightness control was initially designed to allow users to match the brightness of the pedal for their rig and taste. This is the last tone shaping control in the signal path.

Mid Control: The mid control has evolved into a continuous external control. The mid control featured on the Tube Zone is unique in that it is highly interactive with the tone control.

 
Specifications:
    •    4 clipping stages for tube amp-like response and tone
    •    A total of 7 controls for the ultimate flexibility.
    •    Ultra Bright Blue LED
    •    Single ended class A output.
    •    Chrome powder-coated and silk-screened enclosure, measuring only 117mm * 92mm
    •    Heavy Duty 3PDT footswitch with True Bypass
    •    9V Battery or DC power supply with up to 25V headroom