¡Obtenga asesoría en español!  Llámenos hoy a (800) 222-4701

Rivera RockCrusher Power Attenuator/Load Box for Amps , $699.00 - Add to Cart Skip to Product Information

Rivera RockCrusher Power Attenuator/Load Box for Amps

Power Attenuator and Load Box for Tube Amps
Item ID: RockCrusher
Rivera RockCrusher Power Attenuator/Load Box for Amps
Sweetwater Gear Exchange
Find it used on Sweetwater's Gear Exchange
listed from $399.99
Backordered - More On The Way!

We expect more from Rivera soon. Order today to reserve yours now, risk-free. Estimated October 16, 2026

Color:
Ask An Expert Our Expertly trained Sales Engineers are ready to help! What is a Sales Engineer?
Rivera RockCrusher Power Attenuator/Load Box for Amps
Backordered - More On The Way!

We expect more from Rivera soon. Order today to reserve yours now, risk-free. Estimated October 16, 2026

Cut the Volume, Keep the Tube-amp Tone

This article was Written By

Our Product Research Team

Get to know them!

Rivera's RockCrusher power attenuator and load box could be your gateway to epic tube-amp tonal bliss. The tone of a tube amp is directly related to the power of the signal it receives and how much amplification is added by the tubes themselves. In other words, if you're not cranking up your tube amp, you're not really hearing its full tone! Unfortunately, it's not always possible (or comfortable!) to turn up your tube amp to its tonal sweet spot, and that's where Rivera's RockCrusher comes in. Put the RockCrusher between your amp and speaker cabinet, and you'll be able to crank up the tone on your amp while keeping your volume down.

The RockCrusher's reactive load network is constantly maintaining the proper relationship of impedance and inductive/capacitive reactance. In guitar-speak, that means the RockCrusher lets you push your amp to its limits so that your tubes reach their tonal potential all while keeping your volume down. If you play a tube amp and want the ability to get killer tone out of it at reasonable volumes, the Rivera RockCrusher is a must-have.

Why you need the RockCrusher for live performance

  • Get the true tone of your amp for in-ear monitoring
  • Leave your cabinet at home and still get great tone
  • For home recording, record real tube tone without waking the baby
  • No worries about mic choice or placement
  • For professional recording, greater mic isolation during live sessions
  • Expanded volume control opens up your miking possibilities

Great Tube Tone for Every Occasion

Perfect for stages and studios of any size

Tube amps interact with the impedance load that a speaker cabinet puts on the amp's output — if you plug into your amp and just hook the amp's direct output to a recording device, you won't get the tone you expect. By hooking up the RockCrusher to your amp's speaker outputs, it interacts with all of the tubes in your amp — not just the preamp tubes you hear from your amp's direct output — to provide the true articulate and responsive tone you're looking for.

What does this mean for you? You can harness every tiny bit of tone your tubes have been designed to put out, and you get the sound of your amp and pedals, all without worrying about volume. Onstage, the decreased stage volume allows for better monitoring situations and lets your front-of-house engineer mix your signal without fighting your stage levels. In the studio, this means you get to lay down no-compromise guitar tone without bleeding sound into other mics. You paid for every last tube in your amp, so use them!

Rivera RockCrusher Features:

  • Use with a single 8-ohm cab or dual 16-ohm cabs
  • Lets you hear your tube amp's tone as you've never heard it before
  • Bombproof construction lets you take it to even the wildest gigs
  • Balanced XLR and unbalanced 1/4" outputs let you easily interface with your recording gear
  • Tonally transparent so that you hear your amp, not the RockCrusher

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.