We'll start off by saying that the Sludge Hammer from Greenhouse Effects does exactly what it says on the tin. This isn't a Hendrix-inspired fuzz - there's very little old-school inspiration to be found here. Instead, the Sludge Hammer delivers that fatal sonic blow you've been looking for.
The aim of the game here is devastating doom-laden saturation that takes no prisoners. Ideally suited to modern hard-hitting styles of playing, it'll add plenty of hair to your stoner rock riffs and it'll saturate your metal tone in a gloriously filthy fashion!
The three main controls (gain, tone and body) allow you to drift between your chosen levels of filth, while the VNTG/MDRN switch provides two different types of reactivity depending on the amp or setup that you use. This makes for a surprisingly versatile stompbox - within reason!
Finally, true bypass switching means that the Sludge Hammer only affects your tone when you want it to. This is a harmonically rich fuzz with just the right amount of tweaking options, without compromising the wall of sound that you desire!