
Key Points
Zvex Compact Capsule Collection now totals four verticals with the Yvette Young Box of Rock Vertical Edition added. Zvex launched vertical enclosures early 2018 (Fuzz Factory (Germanium), Box of Rock, ’59 Sound, Vibrophase) and a year later released the Vertical Instant Lo‑Fi Junky.
Box of Rock details: controls — Boost, Volume, Tone, Drive, Boost Footswitch, Stock Footswitch (Engage). It’s a take on Zachary’s cranked JTM45: fairly dark, dense crunchy breakup that opens with the controls; not as extended‑range as some Marshall / MIAB style pedals. Acquired via the Zvex Webstore; USA dealers (including Coast Sonic) now stock it.
Other notes: Lo‑Fi Junky traces to Joel Korte’s predecessor to Warped Vinyl from his work with Zachary Vex. There have been limited editions, silicon and hybrid Fuzz Factory variants and recent artwork changes. The writer now has four verticals (still seeking the ’59 Sound) and uses clones for Mammoth and Mastotron (Wooly Mammoth 7 clone from Greek’s Side Effects; Vertical Mastotron Clone from Russia’s NFYFX).
I’ve long spoken about how I’m mostly at odds with horizontal orientation enclosures (that aren’t multi-fx workstations) - particularly compact and BB-size varieties. So I was delighted back in early 2018 when Zvex introduced its vertical editions of pedals - which at launch were the Fuzz Factory (Germanium), Box of Rock, ’59 Sound and Vibrophase. A year later they launched the Vertical Instant Lo-Fi Junky.
There have been several limited editions and iterations over those 5 years where we’ve seen Silicon and Hybrid Versions of the Fuzz Factory too. Furthermore the artworks for both Fuzz Factory and Instant Lo-Fi Junky have changed fairly recently.
I always intended to get the full set of 5 - and the Yvette Young editions made the those Instant Lo-Fi Junky and Box of Rock editions even more appealing for me. Although it took 3 batches of the Yvette Young Lo-Fi Junky to snag that one - it’s often about timing and budget allocation - and luck!
The Lo-Fi Junky was Joel Korte’s predecessor to his Warped Vinyl from his time of working with Zachary Vex; the Fuzz Factory is that classic modded and feature-extended Fuzz Face, the Vibrophase is a very unique vintage-style Phaser based on Zvex’s magnificent sculptural and thermo-mechanical Candela Vibrophase, the Box of Rock is based on Zachary’s favourite cranked Amp - the JTM45, and the ’59 is of course based on the Tweed Fender Bassman.
I was hoping that Zvex would have rolled out a few more Vertical editions of their classics by now - including their Mammoth and Mastotron fuzzes - while there’s been no movement since 2019’s Vertical Lo-Fi Junky. In the meantime I’ve gotten a Wooly Mammoth 7 clone from Greek’s Side Effects, and a Vertical Mastotron Clone from Russia’s NFYFX - both really great. While I feel that Zvex is missing out on opportunities by not having more of its pedals in the more pedalboard-friendly Vertical orientation. I would certainly be first in line for more of those if they every materialise!
Box of Rock Controls - Boost, Volume, Tone, Drive, Boost Footswitch, Stock Footswitch (Engage).
As mentioned - the Box of Rock is a take on Zachary’s favourite JTM45 Amp fully cranked. It renders as a fairly dark and dense crunchy sort of breakup - while the various controls open it up nicely. It’s a fairly distinctive voicing - I have a few JTM45 style drives in the collection and each has a slightly different core character and texture. I always say pedals have their own personality and character and inspire different styles of playing - and the same is certainly true of the Box of Rock.
I would say it’s not quite as extended-range as several of my other Marshall / MIAB style pedals - but it certainly does its own thing well. And the Yvette Young artwork definitely adds appeal. I kind of wonder how many more Zvex pedals might benefit from a Yvette Young makeover?
In any case I’m delighted to be up to 4 Zvex Verticals now - just the ’59 Sound to go - I will look to get that hopefully in some sort of a custom artwork - as the standard edition design doesn’t do too much for me!
In any case I acquired the Yvette Young Box of Rock direct from the Zvex Webstore as it didn’t look to be getting into UK distribution any time soon - while several of the USA dealers have those in stock now - including Coast Sonic - where I first spotted it!

