This Rivera RockCrusher is in mint condition, but does NOT include any of its original accessories or box.
Boutique Power Attenuation & Studio Load Box: Rivera RockCrusher (Purple Panel)
The Guitar Sanctuary is pleased to offer this Pre-Owned Rivera RockCrusher Power Attenuator & Load Box featuring the Purple Front Panel. Designed and hand-built in the USA by Paul Rivera, the RockCrusher is widely regarded as one of the most transparent, heavy-duty power attenuators ever engineered for tube amplifiers.
Whether you need to tame a cranked 100-watt vintage stack for a small club gig or achieve true cranked-power-tube overdrive in the studio at whisper volumes, the RockCrusher handles up to 120 watts RMS with total sonic fidelity. Unlike standard resistive attenuators that dull your tone, the RockCrusher uses a reactive load network that maintains the natural interaction between your amplifier’s output transformer and speaker, keeping your low-end tight and your top-end articulate.
Features include switchable 8-Ohm and 16-Ohm operation, high/low attenuation levels with a continuous Studio level control, EQ Edge and Warmth switches to compensate for Fletcher-Munson Fletcher-Munson loudness changes, and balanced XLR plus 1/4" line outputs for direct recording or feeding front-of-house PA systems.
Sanctuary Product Intelligence
Tone Profile: Highly Transparent, Dynamic High-End Retain, Tight Low-End Response, Zero Sizzle, Natural Tube Compression.
Best For: High-Wattage Tube Amps, Studio Direct Recording, Silent Stage Setup, Apartment Practice, Volume Management.
Compared To: Universal Audio OX Amp Top Box, Two Notes Torpedo Captor X, Tone King Imperial Attenuator, Mesa Boogie CabClone.
Sanctuary Expert Note: "The Rivera RockCrusher remains a gold standard for players who love the natural sag and saturation of cranked 50W and 100W tube heads. The rare purple panel looks killer, and the reactive load keeps your feel intact regardless of room volume."
Technical Specifications & Operational Attributes:
- Brand: Rivera Research & Development
- Model: RockCrusher Power Attenuator / Reactive Load Box
- Edition: Purple Front Panel
- Power Handling: 120 Watts RMS Continuous
- Impedance Options: Switchable 8 Ohms / 16 Ohms
- Controls: Attenuation Level Switch (Bypass, -3dB to -16dB), Studio Level Rotary Control, Edge Switch, Warmth Switch, Line Out Level
- Outputs: Speaker Out, Balanced XLR Line Out, Unbalanced 1/4" Line Out
- Chassis Construction: Heavy-Duty Steel Chassis
- Condition: Pre-Owned (Mint Operational & Cosmetic Condition)
Power Handling Capacity: 120Watts RMS Maximum
Amplifier Input Impedance: 8 or 16 Ohms, selectable.
Speaker output Impedance: 8 or 16 Ohm
Line Output Impedance: 560 Ohms Balanced or Unbalanced
Line Output Level: +10 db V Maximum
Chassis: 16 Gauge Cold Rolled Steel, Welded, Powder Coat Painted
Weight: 11.2 lbs
Dimensions: 10.75 × 15 × 4.25 in
We are open Tuesday-Saturday from 10am until 6pm CDT.
Any order placed before 3pm CDT Tuesday through Saturday is processed for shipment the same day. Orders placed Sunday-Monday will be processed for shipment the following Tuesday.
For Free Shipping items, Effects pedals and small goods items are generally shipped via USPS Priority Mail, and Guitars and Amplifiers are generally shipped via UPS Ground.
Due to our central location in the middle of the US, most orders will be delivered within 1-3 days delivery time.
Other shipping methods are available (at an additional cost), including next day air.
Please call us directly at (972)540-6420 if you have any questions regarding shipping for your order.

Product Videos
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