SKU: 9376707829

B2 Audio MANI 600.4 - 4 Channel Amplifier

Sale price$152.55 Regular price$169.50
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Description

B2 Audio MANI 600.4 - 4 Channel AmplifierMANI 600 Stealth, sleek, smooth & surprising. The Mani amplifiers ushers in an entirely new statement. Call it nano, mini or micro amplifiers, we call them Mani 600s. This new platform introduces several user & installer friendly features. Auto detect remote, signal detection & high level speaker inputs brings these small amplifiers into a category of their own! Stealth The Mani deviates from the traditional end panel design, with power, speaker &

MANI 600

Stealth, sleek, smooth & surprising. The Mani amplifiers ushers in an entirely new statement.
Call it nano, mini or micro amplifiers, we call them Mani 600’s. This new platform introduces several user & installer friendly features. Auto detect remote, signal detection & high level speaker inputs brings these small amplifiers into a category of their own!
Stealth

The Mani deviates from the traditional end panel design, with power, speaker & adjustments on each side of the amplifier.
Inspired by the Ref Four SQ amp, Mani’s also have a single front panel layout for all connections. But with a slight twist, as the adjustments has been top mounted for easier access. All controls are well hidden behind a smoked panel, giving the amplifier a sleek and stealthy look.
Controls

So what’s hidden underneath this panel? Given the compact size, you might not expect much? The 600.4 has a fully featured adjustment section, even surpassing some of our previous full range amplifiers. Upper left you have the Turn on selection with 3 different modes for amplifier start up. Switched remote, speaker offset or RCA signal detection.

Frequency 10 x multipliers offers more exact adjustment for your crossovers. Combine it with the crossover selection switch and you can configure Low Pass, High Pass or even Band Pass across all 4 channels! Talk about channels, should you want to configure the Mani 600.4 in 4 ch, 3 ch or 2 ch, the channel switch makes it simple! Enabling it, you can send RCA signal to all channels using only a single L+R signal.

The Mani 600 monoblock doesn’t have the same features due to the circuit configuration of a mono amplifier. That being said, it still offers, the same turn on features with auto detection. In addition it has an adjustable Subsonic crossover from 5 Hz ~ 40 Hz and an adjustable Low Pass from 50 Hz ~ 500 Hz. Phase issues from your subwoofer are taken care of by the built in adjustable 0 ~ 180 ° phase.
Octaves & Levels

In search of accuracy? With a 24 dB slope per octave, the Mani amplifiers offers steep attenuation from your cut off point of your crossover. Simplified, the signal output at 25 Hz will be 72 dB less than a selected 200 Hz cut off (3 octaves 200/100/50). Crossover spanning from 20 Hz all the way up to 5000 Hz, gives you the total control of your sound preference.

Both Mani amplifiers shares the same compact dimensions. Only 10.6″ x 6.45″ x 2.28″ / 26.9 cm x 16.4 cm x 5.8 cm, makes them fit everywhere. Oem installs in bikes, cars or other vehicles, might have original head units as an integrated part of the system making it hard to change. The high level feature on both Mani amplifiers handles that. The auto power on detection makes it even simpler installing these amps in oem systems. It removes the need for a 12 V remote signal.
600’s

The 600 name relates to the total power output derived from all channels. The 600.4 has a power reserve of 4 x 100 W at 4 Ω, 4 x 150 W at 2 Ω. The bridged 4 ch configuration boasts a massive 2 x 300 W at 4 Ω while still having a damping factor of over 400. Most monoblocks are stable into 1 Ω, but the Mani 600 is NOT a 1 Ω amplifier.

Which is not a drawback, as much as it is an advantage to the Mani 600. The circuit configuration is optimized for maximum power at both 4 and 2 Ω. Instead of a very common 1 Ω design, where power would be 200 W, 400 W and 600 W at 4/2/1 Ω. The Mani 600 monoblock uses a partially regulated design. Thus, the output at 4 Ω is an impressive 450 W and 600 W at 2 Ω! Making it a perfect match for all the RAGE/RAMPAGE 6.5 & 8″ woofers, even sufficient for the RIOT series of subwoofers.

SPECIFICATION 14.4V
Power @ 4 Ω: 4 x 105 w
Power @ 2 Ω: 4 x 150 w
Power @ 4 Ω bridge 14.4v < 1% THD: 2 x 300 w

SPECIFICATION

Frequency Response: 10 Hz ~ 35 KHz (+/- 2 dB)
Signal to Noise Ratio: > 90 dB
Input Sensitivity: 5 ~ 0.2 V
Crossover: 24 dB / Oct
High Pass Crossover: 50 Hz ~ 4 KHz
Low Pass Crossover: 50 KHz ~ 1 KHz
Damping Factor: >400
Power Terminal Gauge: 6 GA x1
Fuse Rating: 70 A
Operational voltage: 9 V ~ 17.5 V
Dimensions: 10.6″ x 6.45″ x 2.28″
269 x 164 x 58 MM
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 9376707829

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Lynn
Massapequa, US
★★★★★ 1
No customer service for product under warranty
Color: Beige
loved this umbrella for the 4 months we used it. did a lot of research to find an umbrella that would stand up to New England "breezes" -- this one was advertised as wind resistant; bought in June 2025, seemed very sturdy, really nice-looking, used on our patio (installed in the base the recommended base) through the summer; stored indoors for the winter; brought back onto patio a couple weeks ago. On a day with average wind a couple weeks ago, the tilt mechanism broke. Umbrella did not fall over, a gust of wind just forced the tilt mechanism to snap. Spent a lot of time trying to fix it, but it's permanently broken. It's less than a year old so still under warranty, as stated in the materials they sent with the umbrella. Same materials list the email to contact if there are any problems with the product. Have emailed the company, twice now, asking for a refund or replacement. Radio silence. Don't buy this unless you're ok with throwing it away after four or five months of use and being ignored by customer service.
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Reviewed in the United States on May 29, 2026
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Verified Purchase
KNexus
Los Angeles, US
★★★★★ 3
Third time in 10 years nerding out on an Amazon patio umbrella on a budget...
Color: Navy Blue, Color: Navy Blue
Color: Beautiful, but the fabric is thinner than other options that are only ~$10 more. Tilt mechanism: Major reason for my 3:5 stars. It's plastic with a metal fastener through the middle. We won't be tilting this umbrella in any wind gust situations over 5mph. The warnings on the stickers and in the instructions make it clear this is a limitation, but it's not mentioned in the listing details. Quality | Value for money: Overall very mid. This is a nice 3-tiered umbrella at a near rock-bottom budget price for that class. I have found other mystery brand umbrellas on Amazon that have lasted for 5+ years, albeit with some (in my opinion) acceptable fading and rust. This umbrella leans hard into plastic everywhere except the fasteners. The ribs and pole are almost as thin as a few layers of beer cans pressed together. At least at the 10' and up diameter, this umbrella requires you to install equally flimsy-feeling extensions in order to get to 10', full sail. Final thoughts: This time around I chose price + delivery speed over quality, and I have a hunch I will be getting what I paid for. I doubt this umbrella lasts for more than 2 to 3 years without UV treatments and a very solid, heavy base.
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Reviewed in the United States on May 26, 2026
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Kevin
Lowell, US
★★★★★ 5
Excellent Value.
Color: Forest Green, Color: Forest Green
Excellent value. Well made. Assembles in a few minutes. Note that the tilt control is the single click type. You push a button on the support column and tilt the umbrella until it picks in place. Venting design is helpful in keeping umbrella from tipping over in moderate wind. Fabric is a light synthetic. We chose green which we like.
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Reviewed in the United States on May 22, 2026
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Nicky
New York, US
★★★★★ 5
Love this umbrella!
Color: Lake Blue, Color: Lake Blue
I totally love my umbrella. The 10 foot size is perfect for the coverage I needed. The assembly was super easy. The Lake Blue color is more beautiful than the pictures displayed. UV coating is exactly what I need, after having skin cancer. It's also stable in light to moderate wind, thanks to the slits in each tiered layer, allowing wind to pass through. I've only had this umbrella a week, but am impressed at this point. It's much more cost effective than having either an awning or roof extension over my patio. $90 vs $8-20k! Highly recommended.
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Reviewed in the United States on April 25, 2026
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Verified Purchase
Janelle Musick
Boise, US
★★★★★ 5
AMAZING PRODUCT!
I am so impressed by these! It’s winter and my skin has been so sensitive, dry, flaky patches… I’ve tried so many products! I saw a few videos of these being used decided since there were so many independent videos about them I’d try! O.M.G!!! I should have taken a before and after! After only 1 use my face feels sooo much better. No more dry, flakiness. They were extremely easy to use. I have a bit more of a round face and they fit just fine (went up a little higher on my hairline but not bad). Doesn’t leave your skin feeling sticky, just hydrated! 100% will buy again!
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Reviewed in the United States on January 13, 2026

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