new arrival Fosi 2021 Audio M02 Subwoofer Amplifier Mono Channel lowest Amp Home Theater Power Amp 100Watt online

new arrival Fosi 2021 Audio M02 Subwoofer Amplifier Mono Channel lowest Amp Home Theater Power Amp 100Watt online

new arrival Fosi 2021 Audio M02 Subwoofer Amplifier Mono Channel lowest Amp Home Theater Power Amp 100Watt online
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Voltage
220 Volts
Manufacturer
Fosi Audio
Brand
Fosi Audio


Subwoofer Amplifier Full-Frequency Mono Amp

Our Story

Fosi Audio was founded with a simple goal: Build products that sound great and make people want to listen to music every day. We design, manufacture, and sell many Hi-Fi audio products on the market. We pursue your perfect music journey. Enjoy Hi-Fi music with Fosi Audio audio products NOW!

  • Fosi Audio Official Website: www.fosiaudio.com
  • Facebook Page: Fosi Audio
  • Technical Support: www.fosiaudioshop.com

100 Watt Subwoofer Amp Home Theater

Mini Stereo Audio Amp with SUB Frequency Control

  • Power Adapter: 19V/4.74A
  • DC Input Range: 12V-24V
  • Terminating Impedance: 2 Ohm - 8 Ohm
  • MAX Power Output: 100Watt @4Ohm
  • Full Frequency Response Range: 20Hz-20KHz(± 3db)
  • Bass Frequency Range: 20-200Hz
  • Input Sensitivity: ≤ 0.2mV
  • SNR ≥ 106dB
  • THD ≤0.03%

  • 2 Channel Power Amplifier Series: BT10A, BT20A, TB10A, V1.0G, V1.0B, TDA7498E, HD-A1, BT20C;
  • 2.1 Channel Power Amplifier Series: BT30A, TB20A, BT30C;
  • DAC Series: Q4, Q5, Q5 Pro, Q7; DAC Amp: DA2120A, DA2120C;
  • Subwoofer Amplifier Series: TP-01, TP-02, TP-03, M02, M03;
  • Phono Preamp: Box X2; Tube Preamp: P1, P1 Pro;
  • Tube Headphone Amplifier: T20, P2
  • Passive Bookshelf Speakers: DK560, DK560-N;


Fosi Audio Exclusive Design

Switch to PBTL, it's a Full-Frequency Mono amp for driving passive speakers. Switch to SUB, it's a subwoofer amplifier for diving passive subwoofers.


High Efficient Power Output

Adopt Texas Instruments TPA3116 Chip, MAX power output up to 100Watt. Strong internals make for A lively listen.


Upgraded DC Outlet

The old version or other brand amplifiers sparks flying when power supply plugin, it's unsafe. With a built-in power protection circuit, there are no sparks flying when you plug the power adapter into the amplifier. Safe for use!


DIY Your Audio System

This amplifier gives you the power and versatility you need to create a professional sound system. Great amp to driver most home bookshelf speaker or subwoofer.


Solid Built Aluminum Alloy Enclosure

Curved edges and sleek controls accentuate its unibody design. With truly useful features, and thoughtfully designed premium enclosures.


19V/4.74A Power Supply

Fosi Audio M02 amp comes with the energy-efficient and stable power supply which got authoritative certification by many security tests, can get an astonishing sound.

M04 M03 M02 BT30D BT30A TP-02
Type Subwoofer Amp Subwoofer Amp/Mono Amp Subwoofer Amp/Mono Amp 2.1 CH Amp 2.1 CH Amp Subwoofer Amp
Input RCA RCA RCA Bluetooth + RCA Bluetooth + RCA RCA
Output Passive (Speakers+Subwoofer) Passive (Speakers+Subwoofer)+Powered Subwoofer Passive (Speakers+Subwoofer) Passive (Speakers+Subwoofer) +Powered Subwoofer Passive (Speakers+Subwoofer) Passive Subwoofer
THD ≤ 0.03% ≤0.03% ≤0.03% ≤ 0.04% ≤ 0.04% ≤ 0.04%
SNR ≥ 106dB ≥106dB ≥106dB ≥ 98dB ≥ 98dB ≥ 98dB
Terminating Impedance 2-8Ohm 4-8Ohm 2-8Ohm 2-8Ohm 2-8Ohm 2-8Ohm
Power Adapter 19V/4.74A 32V/5A 19V/4.74A 24V/4.5A 24V/4.5A 24V/4.5A
Work Voltage AC 110V - 240V AC 110V - 240V AC 110V - 240V AC 110V - 240V AC 110V - 240V AC 110V - 240V
MAX Power Output 100 watt 200 watt 100 watt 50 wattx2+100 watt 50 wattx2+100 watt 220 watt

Features & details

Features

  • ❤ 【Hi-Fi Amp with Clean Sound Quality】M02 subwoofer amp adopts TPA3116 chip, NE5532 op-amp, can provide 100watt output power for 4 ohm subwoofer or speaker. No pop, no audible noise, dead silent when nothing is playing through it.
  • ❤ 【Full-Frequency and Sub Bass Switchable 】With a selector can be switched to subwoofer bass amplifier or full frequency mono amp, can be connected to passive suboower/speaker.
  • ❤【Mini Compact but Powerful】Built-in low pass filter for subwoofers with sub frequency control, small simple compact design but practical and powerful.
  • ❤【Home Hi-Fi amplifier】Home Hi-Fi mono integrated class d amplifier, Exclusively designed for the customers who pursue HiFi sound; Ship with 19V 4.74A power adapter.
  • ❤【High Quality After-sale Service】 With 18 months warrenty and 24 hours after-sale service online to provide you the great shopping exprerience.

Product information

Product Warranty: For warranty information about this product, please click here
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Product guides and documents

Comparison Chart (PDF)
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Customer Questions

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Q: Would this work with a 16 0hm speaker? The description says 4-8, but would it have less po…

A: A 16 ohm speaker will work no problem. At 4 ohms it puts out 100W max and at 8 ohms 50W ma…

Mark Hebert | 7 months ago

Q: Wouldn''t this be underpowered for a 4 ohm 8inch 200watt peek sub compared to the same sub …

A: No the lower ohm load the more output power but you have to be careful in doing this becau…

Bill | 2 years ago

Q: I have a stereo 3.5 mm audio connector from my source. can i use adapter from 3.5 mm into …

A: Hi there:
here is a link to the cable that you need , not sure on your hookup so see the …

Grant Schumacher | 1 year ago

Q: Can i use a single to dual rca cable (single lfe from receiver, dual rca to l r on amp)?

A: You can use both

Bill | 1 year ago

Customer reviews

4.5 out of 54.5 out of 5
259 global ratings

Reviews with videos

Reviews with images

Top reviews from the United States

AceFlyer
5.0 out of 5 starsVerified Purchase
Excellent amp for sub-woofer
Reviewed in the United States on January 16, 2020
I had a 4-way speaker with a 12 inch woofer that I thought I could convert into a sub-woofer. All I needed was an amp. This one is perfect. It is tiny, fits in the palm of your hand, and produces distortion free sound. It has a control which lets you set the frequency at... See more
I had a 4-way speaker with a 12 inch woofer that I thought I could convert into a sub-woofer. All I needed was an amp. This one is perfect. It is tiny, fits in the palm of your hand, and produces distortion free sound. It has a control which lets you set the frequency at which the sub kicks in. You do NOT want to include mid frequencies because you will loose channel separation and the sub can''t reproduce them anyway. I set the control about mid point. The sensitivity control is just right and produces plenty of sound at mid point. It comes with a power brick which works well- there is zero noise and zero hum introduced by the brick.

The output power is a little overstated. It is mathematically impossible to get 100 watts RMS out of this unit. The power brick is rated at 19 volts at 4.7 amp. Since watts = volts x amps that means the brick can only deliver 89 watts.

Allowing for some of that power to be dissipated as heat in the unit, let''s call it 80 watts. That would be at 4 ohms. If your speaker is 8 ohms, you should cut the power in half. So, expect about 40 watts RMS into 8 ohms.

And not continuously- the amp has no fins and no way to dissipate heat, so it will shut down on continuous high power use. I am very happy using it as a sub-woofer amp connected to a PC for playing music and games quite loudly. If your demands are more intense, consider a plate amplifier which is designed for continuous, high power use.

By throwing a switch, the amp converts into a very capable amp (NOTE: Mono, not stereo) with a flat frequency response, which could solve many needs. All in all, this is a very good subwoofer or mono amplifier as long as you recognize it has a few limitations
6 people found this helpful
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Jorge O
5.0 out of 5 starsVerified Purchase
Great for shaker speaker
Reviewed in the United States on June 20, 2019
Using it only for couch shaker tactile transducer, so not 100% sure how sound quality goes for regular speakers. It does pump a good amount of juice to shake the couch so Im happy with it.
14 people found this helpful
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Steve
5.0 out of 5 starsVerified Purchase
Saved having to buy a new sub
Reviewed in the United States on July 30, 2020
I''ve had a Sony surround sound system for several years. It wasn''t a high end system by any stretch, but it got the job done. Over the years however, the display on it kept getting dimmer and dimmer and it would be hard to get it to power up at all sometimes. One day it... See more
I''ve had a Sony surround sound system for several years. It wasn''t a high end system by any stretch, but it got the job done. Over the years however, the display on it kept getting dimmer and dimmer and it would be hard to get it to power up at all sometimes. One day it just wouldn''t power up at all, so I decided it was time to replace it.

Unfortunately replacements were much more expensive than I expected. Just the receiver/amp alone cost more than I paid for the whole system the first time. On top of that, virtually all of the receivers require active subwoofers, which meant I would also have to replace the passive sub that I had from my old Sony system. Another expense, plus my wife hates cords and she freaked out when I said we''d have to add a power cord going to a new sub.

That''s where this little gizmo came in. Instead of getting a new sub, I just inserted this behind the receiver to boost the line level sub output to the full output the passive sub needed. I was able to continue using the existing wiring without having to add a power cord to the nearest wall jack. And it was a lot cheaper than a new sub.

I know the audiophiles will just roll their eyes and say "passive subs suck", but really, it''s not that important to me and not having to listen to my wife gripe about a cord running across the floor is worth it. The source quality is plenty good enough and it saved me $75-100 by reusing what I had.

The amp is easy to use. Just plug it in. As I recall I pretty much just turned the output all the way up and fiddled with the cutout and switch until it sounded decent. I think it sounds better than the old receiver, probably because the new one has a little more power.

So, I''m happy. Saved me a few bucks and avoided sending a few more parts to the landfill.
5 people found this helpful
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HawaiiDude
5.0 out of 5 starsVerified Purchase
GOOD VALUE! GOOD SOUND QUALITY! BOOMING BASS!
Reviewed in the United States on November 17, 2020
I had an old Sony DAV-FR1 surround sound system in my bedroom that the receiver died on me so I purchased a new Sony STR-DH590 for $199 and a Polk Audio Center Channel for $77 and hooked it up along with some old Sony bookshelf... See more
I had an old Sony DAV-FR1 surround sound system in my bedroom that the receiver died on me so I purchased a new Sony STR-DH590 for $199 and a Polk Audio Center Channel for $77 and hooked it up along with some old Sony bookshelf speakers I had laying around and the bass was lacking. So I repurposed the Sony SS-WS12 passive subwoofer from the broken Sony DAV-FR1 and connected it to the Fosi M02 Mono Channel Subwoofer Amplifier and connected it to my new Sony STR-DH590 and wow! BOOMING bass! If you don''t believe me listen to the attached video!
Not sure why some of the negative reviewers were having problems. This little sub amp is powerful and sounds great! If you have a passive sub just lying around, for $60 you can''t go wrong! I highly recommend this little sub amp! And by the way, I had excellent support from Fosi Audio as I had contacted them via email and asked a couple of questions regarding the wiring hook up. Two different tech support people emailed me back the next day to help. Good service also!
One person found this helpful
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Har
5.0 out of 5 starsVerified Purchase
Good value for the money
Reviewed in the United States on August 15, 2019
GREAT smaller amp for use in my flight simulator , using two bass shakers for effect of movement in the sim. Amp works well and provides a cost effective way to power the bass shakers. Had a few questions for this manufacture and he got back to me quickly and provided the... See more
GREAT smaller amp for use in my flight simulator , using two bass shakers for effect of movement in the sim. Amp works well and provides a cost effective way to power the bass shakers. Had a few questions for this manufacture and he got back to me quickly and provided the detail on the questions for a quick solution.
9 people found this helpful
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AdamB5000
5.0 out of 5 starsVerified Purchase
Paired with Buttkicker Mini Concert bass shakers
Reviewed in the United States on July 6, 2021
I just want to drop by and say these seem to work well with bass shakers. I bought two amps, and each is paired with a Buttkicker Mini Concert (2 ohms). I use it for sim racing (iRacing) and after a few hours of driving, these haven''t had an issue. They seem to work... See more
I just want to drop by and say these seem to work well with bass shakers. I bought two amps, and each is paired with a Buttkicker Mini Concert (2 ohms). I use it for sim racing (iRacing) and after a few hours of driving, these haven''t had an issue. They seem to work fine. Hopefully they last a long time.

They are small!

I was using Buttkicker''s amp, but their amp comes with a remote and the volume adjustment is two buttons. Every time I powered down the rig, the volume would reset! I then had to adjust it the next time I raced. It was annoying. So the sole purpose of these amps were user friendliness. I can leave the knobs alone and the setting is good each time I fire them up. And if I need a quick adjustment, the small amps are placed within reach of my seat. Turning a knob is much easier than fumbling with a wired remote and clicking the correct button.

So this is a success, as I see it.
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D.Smith
3.0 out of 5 starsVerified Purchase
Inexpensive, but VERY low power
Reviewed in the United States on July 30, 2019
OK, so it claims to be 100 watts at 4 ohms. I''m sure that''s a "peak" number, masquerading as RMS. I tried running an 8 ohm sub and I''d be very surprised if this amp was putting out even 15 watts RMS. Had to return it. Hey, it''s inexpensive and seems reasonably well... See more
OK, so it claims to be 100 watts at 4 ohms. I''m sure that''s a "peak" number, masquerading as RMS. I tried running an 8 ohm sub and I''d be very surprised if this amp was putting out even 15 watts RMS. Had to return it. Hey, it''s inexpensive and seems reasonably well made, so if you don''t need much power it may work for you, but don''t be fooled by the number 100.
7 people found this helpful
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D. Annett
5.0 out of 5 starsVerified Purchase
not bad! not bad at all!
Reviewed in the United States on August 28, 2020
So i usually run my gear into regular receivers after mixers and distro amps. Bass would be amped by car audio with external power supplies and a cab with a 12 or so. Never liked the form factor, but performance was sweet, so was the price point for comparable gear. Rack... See more
So i usually run my gear into regular receivers after mixers and distro amps. Bass would be amped by car audio with external power supplies and a cab with a 12 or so. Never liked the form factor, but performance was sweet, so was the price point for comparable gear. Rack amps are loot. In the end my amp croaked (a soundstream) and the 25 amp PS i had on it has a fan and is super annoying. I figure I''d try some new gear to see, plus I wanted to move the controls up to my desk and not by the amps.

This guy worked out rather surprisingly well, not that I expected trash, but wasn''t sure how it would fit in my system. Love it so far. Form factor and gear wise it makes so much more sense. Basically a decent wall wart at this point and a small unit on my desk, so now I have full control of not only overall bass load, but the curve too. Pretty slick. I think it''s a bit small for my 12, but i''ll keep it regardless! Grab one it''s worth it!!
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Top reviews from other countries

R. Wilson
4.0 out of 5 starsVerified Purchase
Revived my old bass box
Reviewed in the United Kingdom on May 2, 2021
Looks and feels good quality, neat and small with a potent separate power supply, quiet in operation, just the job for a small room. Enough gain to give bass balance to my bookshelf speakers with volume at max - could do with more amplification. Note it has line inputs only...See more
Looks and feels good quality, neat and small with a potent separate power supply, quiet in operation, just the job for a small room. Enough gain to give bass balance to my bookshelf speakers with volume at max - could do with more amplification. Note it has line inputs only and manual on/off switch as opposed to automatic operation. Be sure to earth your system as it radiates radio interference when chassis not earthed.
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Adrian Stacey
5.0 out of 5 starsVerified Purchase
Excellent addition to my stereo. Currently it''s being used to power a 15" sub which it can do easily
Reviewed in the United Kingdom on September 27, 2021
Excellent addition to my stereo. Currently it''s being used to power a 15" sub which it can do easily. It is entirely quiet with the volume up full whilst no music is playing which is superb. Worth considering if your planning a 2.1 stereo with a passive subwoofer.
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Jordan J.
3.0 out of 5 starsVerified Purchase
Lo
Reviewed in the United Kingdom on May 28, 2021
It is good
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HouseOfKs
5.0 out of 5 starsVerified Purchase
Great box for my sub
Reviewed in Canada on July 18, 2021
Had a HTIB that was not passing my 4k devices to my tv, it was downgrading the signal to 1080p. Had to buy a new reciever hower receivers do not offer a powered sub output. This box was perfect for powering the sub. At first there wasnt much output and it was the receivers...See more
Had a HTIB that was not passing my 4k devices to my tv, it was downgrading the signal to 1080p. Had to buy a new reciever hower receivers do not offer a powered sub output. This box was perfect for powering the sub. At first there wasnt much output and it was the receivers fault. I had to make some audio changes and bam the bass started punching through. Everything is sounding great and couldnt be happier. I also have a powered sub so I have extra bass when watching movies Epic. Thanks Fosi!!!
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Luc
4.0 out of 5 starsVerified Purchase
a bit weak
Reviewed in Canada on August 4, 2021
a bit weak for big passive boxes, dont expect a thunder roll! Will give a honest bass at low level Bought two, at 59$ minus coupon, one got lost in delivery by puro-later, and then price went up ! not sure it''s worth 69. Second time a try to publish a comment, I guess they...See more
a bit weak for big passive boxes, dont expect a thunder roll! Will give a honest bass at low level Bought two, at 59$ minus coupon, one got lost in delivery by puro-later, and then price went up ! not sure it''s worth 69. Second time a try to publish a comment, I guess they publish only the ones they like!
One person found this helpful
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