SKU: 22521624040

B2 Audio RAGE MI 850 - Mono Amplifier

Sale price$181.35 Regular price$201.50
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Description

B2 Audio RAGE MI 850 - Mono AmplifierRAGE MI Imagine the RAGE amps, with their features, performance and versatility. Their footprint is small for their performance, but can it be wrapped up in a slight different package? The RAGE MI, where the MI equals Mini does exactly that. Power, Performance, Perception & even smaller! It sounds too good to be true, but with a few redesigns weve made it possible. Offering the exact same power as the RAGE 1200s wouldnt make any sense, so we dialled

RAGE MI

Imagine the RAGE amps, with their features, performance and versatility. Their footprint is small for their performance, but can it be wrapped up in a slight different package? The RAGE MI, where the MI equals Mini does exactly that. Power, Performance, Perception & even smaller! It sounds too good to be true, but with a few redesigns we’ve made it possible.

Offering the exact same power as the RAGE 1200’s wouldn’t make any sense, so we dialled it back a bit. Not much though, the RAGE MI 1000.4 still offers an impressive true 4 x 175 W RMS @ 4 Ω. In dyno testing we were less than 6 % shy of that at 8 Ω! That goes to say these amps are beyond expectation.
The other RAGE MI offering is a 850 W mono and stable at 1 Ω. The same efficiency is clear here, 2 Ω dyno performance boasts more than 600 W. The near identical footprint of these 2 amps makes them perfect for sleek installs.
Any Level

The MI mono took notice of its RAGE 1200 siblings high level feature. The high & low level inputs offers greater flexibility, especially in vehicles where no RCA outputs are present. Given the modest dimensions, the amp can be hid away nearly everywhere (9.5 x 4.9 x 2.2″ / 24 x 12.5 x 5.7 cm). There’s no excuses for having insufficient bass response anymore. Even with a small amount of space for an enclosure, our shallow mount woofer RIOT FL10 solves that.
The RAGE MI 850 has a fully featured 12 dB / octave crossover section with 10 Hz ~50 Hz adjustable subsonic, 35 Hz ~250 Hz lowpass & a fixed 0 ~12 dB boost level @ 45 Hz. We even managed to squeeze in an external bass level remote port.
Packing the panel

The 4 channels of the RAGE 1000.4 MI takes up the entire panel. We didn't narrow it down with fixed crossover points & only 1 crossover type per stereo channel. The amp has fully configurable high & low pass crossovers on all channels. With the 50 Hz ~5 KHz adjustable frequency range the amp is ideal for anything , mid woofers, midranges, even bullet tweeters! Seeking more? The bridged configuration has more than 500 W available per channel, equalling over 1000 W RMS in total! With lowpass crossovers set accordingly, this tiny amp can used as a pure sub amp, or even as a tri-mode, with loudspeakers on the unbridged channels (front) and a woofer on the bridged channel (rear).

SPECIFICATION 14.4V
Power @ 4 Ω: 1 x 350 w
Power @ 2 Ω: 1 x 600 w
Power @ 1 Ω: 1 x 850 w

SPECIFICATION

Frequency Response: 10 Hz ~ 35 KHz (+/- 2 dB)
Signal to Noise Ratio: > 93 dB
Input Sensitivity: 6 ~ 0.2 V
Crossover: 12 dB / Oct
High Pass Crossover (Subsonic): 10 Hz ~ 50 Hz
Low Pass Crossover: 35hz ~ 250Hz
Damping Factor: >200
Power Terminal Gauge: 4 GA x1
Fuse Rating: 100 A
Operational voltage: 9 V ~ 17.5 V
Dimensions: 9.45″ x 5.9″ x 2.2″
240 x 125 x 57 MM
Shipping Notes
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 22521624040

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Debbie Collinsworth
Battle Creek, US
★★★★★ 5
Happy dog!
Color: 3 PCS
Great product for a Great Dane aggressive chewer!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
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Verified Purchase
Lola
New York, US
★★★★★ 5
Good Toy
Color: 3 PCS
This dog toy is incredibly sturdy and holds up well to heavy chewing and rough play. My dog absolutely loves it and can play with it for hours without causing much wear to the toy itself. The only downside is that it’s pretty hard and heavy, so when it gets tossed around indoors, it can easily bang into walls and furniture and leave marks or dents. Great durable toy overall, but probably better suited for outdoor play or open spaces.
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Reviewed in the United States on May 27, 2026
J
Verified Purchase
Jeanelle
Los Angeles, US
★★★★★ 5
The last forever!
Color: 3 PCS
These are great and last forever. My little guys are super chewers and have had these for months. Great buy!!
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Reviewed in the United States on May 1, 2026
K
Verified Purchase
Kirstyn Wheeler
Charlottesville, US
★★★★★ 5
Cute, Durable, and Keeps Them Busy for Hours
Color: 3 PCS, Color: 3 PCS
My girls are mild chewers, and these ocean-themed toys keep them entertained for hours. They absolutely love chewing on them, and the starfish, shell, and lobster designs are adorable while still being very functional. The fun shapes really hold their interest and help satisfy natural chewing instincts, which is great for keeping them busy without getting bored quickly. I’m also impressed with how well they’ve held up over time. Even with regular use, the material remains durable, easy to clean, and long-lasting. They’re made from food-grade nylon, feel safe, and encourage healthy chewing habits. Overall, these are a fantastic choice for mild to moderate chewers and a solid, long-lasting toy my girls truly love
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Reviewed in the United States on December 27, 2025
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Verified Purchase
AE
Carnegie, US
★★★★★ 4
Good Dog Toy
Color: 3 PCS
These have lasted my dogs way longer than I thought. My dogs chew on them probably a few times a week, they rotate which ones they use. The only reason I am not giving 5 stars is because they are small. I think Large Chew toy, I think a Large Chew Toy. These are better fitted for Medium to Small Sized Dogs.
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Reviewed in the United States on January 6, 2026

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