Adventure Audio Glacial Zenith II – Boost & Overdrive


Adventure Audio Glacial Zenith II

A combined boost, overdrive and EQ pedal that give great tone control through flexible EQ, great drivers and the ability to change the order in how the effects are linked together

Requires 9V DC centre negative supply – 50ma current draw

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Adventure Audio Glacial Zenith II

The Adventure Audio Glacial Zenith is a combined Boost, EQ and Overdrive pedal. You can choose which order these effects are in the chain.

Think of the Drive stage fixed at the center, while the other sections can move around it. The heart of the beast: a churning cauldron of brittle roughness!

What is the Glacial Zenith like?

The earth moans as a torrent of ice and stone carves its way through the land. And here, atop it all: The Glacial Zenith II

At its most basic, the GZII is a Drive, a 3-band EQ, and a Boost, all in a box together. What really takes it to the peak is the ability to put them in effectively whatever order you want.

Much like a real glacier, the many parts of the Glacial Zenith II are able to shift past one another, allowing the pedal to take many forms.

Control Features

The EQ Post Drive let’s you decide whether the EQ comes before the Drive (left position) or after (right position).

Drive to EQ is the classic order you’ll find on most dirt pedals, as the EQ directly shapes the sound coming out of your distortion stage.

EQ toDrive gives more control over the actual texture of the dirt sound, as you’re shaping your guitar’s tone before it gets dirty. Kinda like the difference between twisting the tone knob on your pedal vs the one on your guitar.

The shape of the thing: focused, tactical affront or reckless, unruly barrage

The Pre Drive Toggle then allows you to put the Boost before or after all the other stuff. Put it after (right position) to increase the output volume. Put it before (left position) to slam the Drive even harder, increasing the distortion.

Exactly where the ice ends and the gravel begins is unknown. All that is certain is the path of destruction it leaves in its wake. Wield it with care.


Low – Deep and earthy rumble of the shifting glacier – 250Hz

Mid – Crunch and clatter of ice and stone, caught up in the flow – 830Hz

High – Crackle and fizz of the ice, breaking and giving way – 2.9kHz

Drive – Increase the roughness of the whole ordeal

Boost – Raise the peak to colossal heights

Volume – Loudness (at the output of the Drive/EQ pair)

Shape Toggle –

Right: less clipped, like crystalline snowflakes
Left: more clipped, like a fine powder
Pre Drive Toggle (Left Toggle) –

Left = Boost pre Drive/EQ
Right = Boost post Drive/EQ
EQ Post Drive Toggle (Right Toggle) –

Left = EQ pre Drive
Right = EQ post Drive

You can see the Glacial Zenith demo’ed here.




Additional information

Analogue or Digital



Blue, White


50 mA



Pedal Type

Boost, EQ, Overdrive

Power Connection Type

Centre Negative

Silicon or Germanium





Zenith II


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