The TREBLE trimpot is inside, just like the KOT.
There are also two new DIP switches inside! They are a bit subtle at some knob settings and modes:
DIP1 : LO-MID lift switch. The tone from your lower strings will be enhanced a little.
DIP2: TURBO switch- with higher gain settings you’ll hear deeper compression, especially in DIST mode. You will hear a brighter, crunchier sound with this on at higher DRIVE settings.

The three modes, as on the KOT, are:

1) Normal Overdrive mode (OD mode): This is the standard King Of Tone sound, - a touch drive available than a tube screamer. Can get much louder than a tube screamer.

2) CLEAN mode : This mode has less distortion, it can be used for clean boosts or clearer, louder sounds. It's sort of a cross between a true clean boost and an overdrive. CLEAN MODE is even less compressed and louder than the OD mode. I love this mode with high drive settings too!

3) DISTORTION mode : more drive than the standard mode- a touch of hard distortion. The sound is more compressed, yet retains the pedal’s character. Same volume as OD mode.

At low DRIVE settings, or when playing softly, there is not much difference between the three modes, they all can get pretty clean and have the same level at low drive settings. The ability to clean up when playing softly is a very useful feature of this pedal. The Drive knob works like the KOT with HIGHER GAIN OPTION, so you can set it anywhere and get great tones.

We are making these by hand in China by the same people who are making our Analog Delay. Though it's made in China, we use the same parts as the King of Tone - best Japanese chip and capacitors, not cheap Chinese parts. No surface mount parts, NO ROBOTS, everything is vintage style and hand wired for easy maintenance and repairs unlike most Chinese pedals and even many USA "boutique" machine-made pedals which are disposable if they have any problems like a pot, jack, or switch that wears out.