SKU: 89387922415

Zvex Effects Double Rock Vexter Series

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Description

Zvex Effects Double Rock Vexter SeriesMaker: Zvex Model: Double Rock Vexter Condition: New Description: This pedal was originally designed for J. Mascis of Dinosaur Jr. He requested two Box of Rock pedals in one box with two stomp switches. He uses that regularly on stage now, but we did one (or two) better with the one were releas ing to the public we made it so you can adjust the sub frequencies (like the Distortron), and you can convert either channel to a Super Hard OnTM. In this way,

Maker: Zvex

Model: Double Rock Vexter

Condition: New

 

Description:  

This pedal was originally designed for J.Mascis of Dinosaur Jr. He requested two Box of Rock pedals in one box with two stomp switches. He uses that regularly on stage now, but we did one (or two) better with the one we’re releas- ing to the public... we made it so you can adjust the sub frequencies (like the Distortron), and you can convert either channel to a Super Hard-OnTM. In this way, you can config- ure the pedal to be two Distortrons cascaded, two Super Hard-Ons cascaded (like a Super Duper 2-in-1TM), or a Box of Rock with boost, or a Super Hard-OnTM (SHO) going into a Box of Rock. Distortion/boost heaven! Whee!!! Let’s go over the controls:

CONTROLS:

DRIVE: Sets the amount of distortion in Distortron mode, and sets the amount of boost in SHO mode. It may crackle when turned. This is perfectly normal.

TONE: Adjust for treble content. Start around 2:00 o’clock. This knob only does stuff in Distortron mode.

VOLUME: Adjust for output volume level.
DIS / BOOST Switch: Changes the circuit from a Distortron

to Super Hard-OnTM boost.

SUBS Switch: “2-1-3” lets you choose the full “Box of Rock” sub amount (3) or two different lower levels of subs depending on your amp’s needs. Only works in Distortron mode.

OPERATION:

Plug your guitar (or any effect’s output) into the right hand input jack. Plug the output into an amp or other effect’s input. Rock out. The two separate stomp switches control whether or not the two distinct circuits are engaged. You can select whether or not the circuit is a Distortron or Su- per Hard-OnTM by way of the “DIS / BOOST” toggle. When in DistortronTM mode, set the subs switch so there’s just enough low-end for your amp. Try using your rhythm pickup with the tone control turned all the way down for a vintage bluesy howling lead sound.

PEDAL PLACEMENT:

I recommend that you try the Double Rock last in your pedal chain, just before the amp. You can set the amp for your favorite clean tone, and set the Double Rock for your

favorite distortion/boost tones. Since you can change the first or second stomp switches to either a Distortron or Super Hard-On (SHO), you can mix and match the two to experience different results... SHO before the Distortron will give you more sustain, while after will give you more amp volume (or drive, if you use a distorted amp sound.) Of course, you can use the pedal the way J. Mascis intended by going Distortron into Distortron or get Super Duper 2-in-1TM tones by cascading the SHOs. If you have other distortion pedals, don’t leave them in the closet! Many dis- tortion pedals sound amazing into the Double Rock. You may discover a whole new love for your old distortion pedal collection!

The best way to complete this pedal is to run it through a JTM45 Marshall amplifier head/cabinet on a warm clean setting (try strapping the channels, setting the volumes below 3, and setting all other controls to 6 as a start point.)

BATTERY CHANGE:

If the performance of your pedal seems diminished or the LED becomes very dim, it’s time to change your battery. Remove the four screws on the bottom of the pedal and carefully remove and replace the old battery, putting it back exactly in the center of the pedal on edge so that it is gripped tightly by the lid when it is screwed back in place.

SPECIFICATIONS:

Uses one 9V battery (preferably alkaline, but the unit is shipped with a carbon-zinc battery.) The low current operation of this pedal’s circuit will give you extraordinarily long battery
life. Current draw is approximately 2mA. A DC power jack (
standard Boss configuration with center negative) is provided on the side of the pedal. Use a high quality 9V adaptor for all high-gain effects!

 

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    SKU: 89387922415

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    4.0 ★★★★★
    Based on 25 reviews
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    K
    Verified Purchase
    K
    Lexington, US
    ★★★★★ 5
    Value replacements
    Size: Saros 10R/Qrevo CurvX/Edge 2 Accessories
    As far as I can tell these are pretty solid replacements for the SAROS 10R. My original side brush was all torn up after just a few months of use so I found these replacement parts. Haven’t used the mop pads yet, but they are a similar design to the “upgraded” mop pads offered by Roborock which are superior to the standard one IMO. Everything else seems to be equal quality to the OEM parts, and at less than $12 I have no complaints on this kit.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on December 31, 2025
    V
    Verified Purchase
    Vi. H
    Bozeman, US
    ★★★★★ 1
    Does not work for Qrevo Arc.
    Size: Saros 10R/Qrevo CurvX/Edge 2 Accessories, Size: Saros 10R/Qrevo CurvX/Edge 2 Accessories
    Filter does not fit my Qrevo Arc. Photo shows size comparison between my old (very dirty) filter and the replacement filter.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 6, 2026
    S
    Sean F.
    Boise, US
    ★★★★★ 4
    Solid replacement parts kit — just skip the mop pads
    Size: Saros 10R/Qrevo CurvX/Edge 2 Accessories, Size: Saros 10R/Qrevo CurvX/Edge 2 Accessories
    This kit has been a handy all-in-one refresh for my robot vacuum. The main brush, side brushes, filters, and dust bags all fit correctly on my Qrevo, slid in without fuss, and have been performing on par with the originals — suction feels unchanged, the side brushes kick debris toward the intake properly, and the filters look and seat identically to the ones they replaced. My one real complaint is the mop pads. They're noticeably thinner and flimsier than the OEM pads, don't hold water as well during a run, and left streakier lines on my floors compared to what I'm used to. I've ended up going back to the original-brand mop cloths and just using this kit for the dry-cleaning parts, which have genuinely been a good value. Four stars — great kit minus the mops.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 15, 2026
    J
    Verified Purchase
    Juli
    Houston, US
    ★★★★★ 5
    Great value
    Size: Saros 10R/Qrevo CurvX/Edge 2 Accessories
    As advertised
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 8, 2026
    A
    Another Amazon Reviewer
    Phoenix, US
    ★★★★★ 3
    Convenient Roborock Kit, but Quality Feels Lower than OEM
    Size: Saros 10R/Qrevo CurvX/Edge 2 Accessories, Size: Saros 10R/Qrevo CurvX/Edge 2 Accessories
    This is a convenient accessory kit for Roborock products, but my experience was mixed overall. I have a QX Revo Pro, not the Ultra, and I realized after the fact that the main brush in this kit is not compatible with my robot vacuum. That was my mistake, but it does limit how useful this particular set is for me. The kit includes a variety of parts, and it is nice to have so many replacements on hand in one package. However, the overall quality feels disappointing compared to my original Roborock accessories. The disposable vacuum bags are noticeably smaller than my OEM bags, which makes me question how often they will need to be changed. The mop pads also seem thinner and less substantial than the originals, and they do not look or feel like the same quality material. Because of these differences, I am concerned about the long term performance and durability of the replacement parts in this kit. While it is convenient and generally compatible with Roborock models, I am not confident that these accessories will hold up or clean as well as the OEM parts I am used to.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 18, 2026

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