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
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Exchange/Return Notes
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SKU: 22521624040

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Sky
Lowell, US
★★★★★ 5
Simplicitic, fast, and amazing quality
Size: 6FT
It made a big difference from wireless connection to wired connection. Definitely worth it for online gaming and casual movie nights. A good amount of thickness that doesn't tangle when installing and pretty easy to use. I would buy again for future devices. 10/10
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Reviewed in the United States on April 1, 2026
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S. Kuderu NJ
Fort Morgan, US
★★★★★ 5
Bridging USB-C hub for Mac.
Style: 10-in-1【1 HDMI+1 VGA】
Best USB C hub for a Mac. It also has interface that bridges the technology crossover for the boomers and millennials 🙂 (SD, Micro SD, RJ45, 3.5 mm audio)
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Reviewed in the United States on June 5, 2026
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Cody Anderson
Lexington, US
★★★★★ 5
Every day essential
Style: 10-in-1【1 HDMI+1 VGA】
I love it. It’s very useful for my computer. It is very well built and is durable the connection seems lose but works very well. Very easy to use. And pretty quick. I use it for my mouse and keyboard. It works very well without any noticable delay. I do not know if it can charge a computer. Mine does not use it to charge. But it works perfectly and would totally buy again
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Reviewed in the United States on December 1, 2025
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Max Wild
Pawtucket, US
★★★★★ 4
VGA compatibility issues
Style: 10-in-1【1 HDMI+1 VGA】
My Asus laptop could not sync the display scaling properly with a Samsung 1280 x 1024 VGA monitor connected via the hub. So compatibility is not universal. Seems great otherwise.
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Reviewed in the United States on June 6, 2026
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Sarah P.
Lowell, US
★★★★★ 5
Good durability
Style: 10-in-1【1 HDMI+1 VGA】
I had the 8 in 1, but realized I needed one more usb hub for my current setup when using dual screens, scanner, printer, and drives, this seems to do well, is a bit heavier than the previous model as expected. Good material and easy to unmount quickly from the computer. Works with usb c connections so perfect for my Surface Pro 9.
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Reviewed in the United States on December 15, 2025

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