The RockCrusher is invaluable and unbeatably versatile because you can place it between your amp and speaker cab as a power attenuator, or use it in place of your speaker cabinet as a load box while sending its balanced XLR or unbalanced 1/4" line out to another amp as a slave, or even send its output to a mixer for recording or live performance!
Taking a preamp output or turning down your volume doesn't give you all of your amp's tone, because getting your favorite tube amp to perform and sound like it does when it is turned up means that you need the power-amp section to add that rich overdrive character. Unfortunately, there are not enough venues that allow for high levels that come from an amp running at full tone and power through speakers.
Rivera designed and built the RockCrusher to maintain your tone. Built into the RockCrusher is a reactive load network for proper speaker-amplifier interaction. Rather than a purely resistive load like many other power attenuators, the Rock Crusher ensures that the amplifier and speaker see each other in a proper relationship of impedance and inductive/capacitive reactance. This translates to a superior tone, regardless of level. To enhance tonal balance, warmth, and shimmer, there are Edge and Warm switches that put you in total control of the final output.
In addition to providing superior tone, impedance matching is critical for your tube amp's health and longevity. Rivera gave the RockCrusher an 8/16-ohm selector switch so you can use either value to accurately match your cabinets and amplifiers.
Additional features that ensure the Rock Crusher is easy to use both onstage and in the studio include a front-panel bypass switch that lets you use the amp with a speaker cabinet when full output level is desired.
When low speaker volume is desired, there is a Studio position of the Attenuator Level Selector that enables the Studio Level control to adjust from low to quiet output—perfect for home, project, and studio recording.
Balanced XLR and unbalanced 1/4" phone jacks with a convenient front-panel level control allow interfacing with practically any audio equipment. Two speaker jacks allow easy connection with up to two speaker enclosures.
Bullet-proof construction, a standard feature of Rivera equipment, is also engineered into the RockCrusher: Within the 16-gauge welded steel chassis of the RockCrusher are heavy-duty and rugged industrial-grade components designed to give you years of reliable, cool-running service. In addition, both sides of the RockCrusher chassis facilitate mounting rack ears or other brackets for professional road case installation.
Superior natural tone balance at any level
Selectable 8- and 16-ohm capability
Reactive internal network for true amplifier/load interaction
Immense thermal capacity ensures cool running and long life
Tight impedance tolerances
XLR and unbalanced line outputs with level control
Low- and high-frequency equalization selection
Load box and attenuator function up to 120W RMS capacity
Enormous and robust internal components
Full bypass capability with no insertion loss
We want you to feel confident with your Prymaxe purchase, which is why when you purchase a new product from us, you are automatically enrolled into our FREE Two Year Warranty.*
What is covered:
What is NOT covered:
* We reserve the right to end this promotion at any time.
When you place an order at Prymaxe, you can rest assured that your item will be carefully packaged. Our shipping team is dedicated to making sure your item arrives in perfect condition and on time.
All in stock orders placed before 2pm EST will ship same day and all orders placed after the cutoff will ship the next business day*. If you need an order immediately, please let us know and we’ll try our best to accommodate your request.
Most orders shipping within the US will ship via USPS or FedEx and are fully insured, we also offer express options if you need an item within 24 hours. All tracking numbers will be sent via email after the item is shipped. If you did not receive your tracking number please feel free to call or email us.
All US Orders Ship for FREE
We love and truly appreciate all of our International customers. All of our international shipments are fully insured and are guaranteed to be delivered or your money back. We offer a variety of shipping options for you to choose from and if for any reason there is an issue with your order we will make it right, that is our promise you.
Pre-Orders typically ship with 2 weeks. In the event a product is backordered we will contact you with an exact shipping timeframe.
Smaller items will ship USPS First Class.
USA shipping only for Vox, Korg, Voodoo Lab, MXR, Dunlop, Way Huge, Barber Electronics, Music Man, Tech 21, Fender, Marshall, PreSonus, Source Audio, and Strymon.
If you are not 100% satisfied with your purchase, you can return it within 45 days of the original purchase date for a full refund. If an item is not received by us within the 45-day window, the package will be refused. All new items returned must be in BRAND NEW condition with zero signs of wear or use and must be returned in the original packaging with ALL materials (free/bundled items -- must be unused/unopened, warranty cards, plastic, pouches, manuals etc.).
Our 45-Day Satisfaction Guarantee covers brand new products only -- it does not cover used and clearance products (see below). It also does not cover items in the “What is NOT Returnable” list below. Please note: All actual shipping fees paid by Prymaxe will be deducted from your refund. This includes orders that qualified for free or subsidized shipping. Return shipping must be paid by the buyer. If you received a defective or incorrect item, please see our FAQ section below.
* Prymaxe reserves the right to define abuse of the return policy on a case by case basis and consequently refuse subsequent return requests by said abuser and place them "All Sales Final".
All Used and Vintage items come with a 48 hour approval period. Please contact us directly at firstname.lastname@example.org within 48 hours of receiving your product for us to set up a manual return for you. Be sure to include your order number and reason for return in the email. All Used/Vintage items must be returned in the same condition they were sent to you in, as well as include all materials that came with it.
All returns should be insured by the buyer and sent via UPS, Fedex, or USPS with tracking. Please do not write on or attach tape or labels to the product box (these will be refused) -- use a packing box to return the product. Attach a shipping label with the RA number onto the shipping box.
To request an RMA number, please fill out the form below. If you are returning multiple items, please submit an individual request for each item (if you ordered a bundle, for example a pedal with a free pack of picks or strings, the bundle counts as one item and must be returned as a whole). If the form does not load for you, please email email@example.com.
When will I get my refund?
Once your return is received by us, your refund will typically be processed within three business days. It typically takes a few business days for all credit card refunds to be processed and reflected on your statement. This means it will take a few extra days for your refund to show in your account after your return is processed. Please note: All actual shipping fees paid by Prymaxe will be deducted from your refund. This includes orders that qualified for free or subsidized shipping. Return shipping must be paid by the buyer. If you received a defective or incorrect item, please see the next question.
What if I receive a defective or incorrect item?
If a product is defective upon arrival, or the wrong item was received, we will send you a replacement/the correct item, and all the shipping fees will be covered by us. For defective items, Prymaxe reserves the right to refuse the return if we determine the reason for the unit failing was not covered under the warranty (i.e., if the item was damaged due to user fault or error). If you feel your item was damaged in shipping, please take plenty of pictures of the damaged box and item and immediately contact us so we can open a claim with the shipping company.
Please be very diligent with testing your defective item. Be sure to try other guitars, power supplies, cables, and amps. We also request that you take a video of the item not working. If we receive your item, test it, and find it to be working, we will give you a refund minus the cost of shipping both ways.
When will I get my replacement item?
If a defective or incorrect item was sent to you, we will send out the replacement as soon as we get the defective/incorrect item back and approve/process the return (typically within three business days). If we do not have the replacement in stock, we will issue a full refund. If you need the replacement to be sent out immediately, please place a new order, and when we get the defective/incorrect item back, we will issue a full refund of the original order.
When must I ship my return?
Your return must be received by us within 45 days of the original purchase date. This means you must ship your return with enough time for us to receive the package within 45 day deadline. If it does not arrive within 45 days, we will refuse the package. If you feel you sent the package within a reasonable time frame, but it arrived late due to the shipping company’s error, please immediately contact us to make an appeal before we refuse the package.
What if I pre-ordered an item?
Even if you pre-ordered an item, we must still receive it within 45 days of your order date in order to give you a refund, so please only pre-order items you plan to keep. If your pre-ordered item arrives defective, you will have a 48 hour period to contact us for a replacement.
Why was my package refused?
There are a number of reasons your package could be refused by us, including: