Nobsound G2 Subwoofer Power Amplifier Mini Mono SUB Amp outlet online sale 2021 100W PBTL BTL Bridge Home Theater online sale

Nobsound G2 Subwoofer Power Amplifier Mini Mono SUB Amp outlet online sale 2021 100W PBTL BTL Bridge Home Theater online sale

Nobsound G2 Subwoofer Power Amplifier Mini Mono SUB Amp outlet online sale 2021 100W PBTL BTL Bridge Home Theater online sale
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Classic TPA3116

  • Classic TPA3116 amplifier chip can offer 100W high power
  • Compatible with 2~8 ohm speakers
  • Can drive most home sub and mono speakers


Dual NE5532 OP-Amp

  • Dual NE5532 OP-Amp can offer high dynamic and analysis


SUB & PBTL Modes

  • G2 can be used as a mono channel amp or a sub amp
  • One G2 can drive one passive subwoofer or one signal channel passive speaker
  • Two or three G2 can be used to build a 2.0 or 2.1 audio system


SUB Frequency Control

  • With independent SUB frequency control knob
  • It can be turned to minimum to cutoff bass


Gain Setting

  • A gain switch on the bottom of the amplifier to allow 4-level of output level setting (20/26/32/36 dB), to keep the sound quality better and not affected by the the resistor part.


Upgrade Circuit

  • Optimized circuit can ensure totally no background noise
  • Built-in speaker protection circuit and low pass bass filter.

Nobsound G2

Packing List
  • 1× Power Amplifier
  • 1× Power Supply

Specifications

  • Power Supply: 19V 4.74A
  • Max power: 100W
  • Full frequency response: 20Hz-20kHz(±3dB)
  • The speaker matches the impedance: 2-8Ω
  • THD: Output 1W@ 0.03%
  • Working voltage: DC12-24V
  • SNR: ≥106dB
  • Input sensitivity: 0.775V
  • Bass cutoff frequency range adjustment: 40-300Hz
  • Slope of bass attenuation: -12dB Slope

  • Dimensions (D*W*H): 118.5*98*33 mm / 4.65*3.74*1.30 in
  • Package size (D*W*H): 257*215*65 mm / 10.12*8.46*2.56 in
  • Net weight: 305 g / 0.67 lb
  • Package weight: 445 g / 0.98 lb

Panel Introduction

How to use

(A) SUB Mode

  1. Use RCA cable to connect your audio sources like Phone / MP3 / PC / TV ... to the "AUDIO IN" port
  2. Use speaker wire or banana plug to connect your passive subwoofer to the "SPK OUT" port
  3. Connect the power supply with the amp firstly and then to the wall
  4. Turn the toggle to "SUB"
  5. Turn the toggle to "ON"

(B) Mono Channel Mode

  1. Mono channel means single right channel or left channel. If you want to drive stereo speakers. you need two of this amps to drive right and left speakers separately
  2. Use RCA cable to connect your audio sources like Phone / MP3 / PC / TV ... to the left or right "AUDIO IN" port
  3. Use speaker wire or banana plug to connect your left or right speaker to the "SPK OUT" port
  4. Connect the power supply with the amp firstly and then to the wall
  5. Turn the toggle to "PBTL"
  6. Turn the toggle to "ON"

Nobsound G2 Nobsound G2 PRO Douk Audio G4 Nobsound NS-03G SUB Douk Audio G3 Douk Audio M4
Feature Support both SUB & Mono; Gain adjustment Support both SUB & Mono; 300W high power Support both SUB & Mono Only for subwoofer; Super mini size; Low cost 2-CH Bluetooth amplifier; Tone control 4-CH Bluetooth amplifier
Power 100W 300W 100W 100W 50W x 2 50W x 4
Channel 1.0 1.0 (1.1) 1.0 1.0 2.0 2.0/4.0
Input RCA RCA 3.5mm AUX + RCA 3.5mm AUX Bluetooth 5.0 + 3.5mm AUX Bluetooth 5.0 + RCA + 3.5mm AUX + U-disk
Output Passive Mono Speaker / Subwoofer Passive Mono Speaker / Subwoofer + Active Subwoofer Passive Mono Speaker / Subwoofer Passive Subwoofer Stereo Passive Speakers 4 Passive Speakers / 2 Passive Speakers + Another M4 Amp
THD ≤0.03% ≤0.03% ≤0.001% ≤0.04% ≤0.04% ≤0.05%
SNR ≥106dB ≥106dB ≥103dB ≥98dB ≥98dB ≥98dB
Speaker Impedance 2~8 ohm 4~8 ohm 4~8 ohm 2~8 ohm 2~8 ohm 4~8ohm
Power Input 19V 4.74A 32V 5A 19V 4.74A DC 8-25V >3A (not included) 19V 4.74A 24V 4.5A
Douk Audio SE Douk Audio P1 Douk Audio U3 Douk Audio T3 PRO Little Bear MC1022 Music Levels
Feature Bluetooth 5.0 amplifier; 100W; 2-CH; TF & U-Disk Bluetooth preamp; Headphone amp; Vacuum tube; Tone control; APTX-HD Headphone amplifier; Classic; Mini size MM phono preamp; Vacuum tube; Audio Preamp 2(1)-IN-1(2)-OUT RCA stereo audio switch MIC Sound Level, Audio Spectrum, RGB LED

Features & details

Features

  • G2 can be used as a sub amp or a mono channel amp. It has a mode switcher which can change between SUB and PBLT modes conveniently. Equipped with 19V 4.74A high quality power supply.
  • Applications: ① G2 can be used as a subwoofer power amplifier for passive subwoofers; ② G2 can be used as a mono amp to drive single channel. You can use two G2 to drive left and right channel separately, which are known as PBLT / BTL Bridge amp. Compared with normal 2.0CH amps, it can ensure totally no interference between two channels and can provide higher power.
  • It has a gain setting which allows 4-level of output level setting (20/26/32/36 dB). It can keep the purity of the sound and avoid the resistor influence. Besides, it also has a bass cutoff frequency control knob.
  • It adopts TI TPA3116 and NE5532 op-amp, which can offer 100W high power and can drive most home sub and mono speakers. Its optimized circuit can ensure totally no background noise. Besides, it also built-in speaker protection circuit and low pass bass filter.
  • Prompt and courteous customer service. For any questions you have, please feel free to contact us on Amazon.

Product information

Product Warranty: For warranty information about this product, please click here
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Customer Questions

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Q: will this power a 50 watt bass shaker?

A: This amp cuts off at 20 Hz with presumably a subsonic filter, how can it power bass shaker…

bhdhlh | 1 year ago

Q: Why are there left and right inputs for a mono amp? If you have a mono source, can you plu…

A: Hello. We have a using guide picture in the listing. You can check that. We have left and …

Seller DoukAudio | 2 years ago

Q: When using in sub mode, which rca input to plug in? left or right or both?

A: Hello. Please see our second main image. The "audio in" rca posts are connected to sound s…

Seller DoukAudio | 3 years ago

Q: When using this with a subwoofer how do I know where to set the frequency cortrol knob?

A: Without having a proper test microphone and measurement software (such as SMAART), you cou…

mam | 2 years ago

Customer reviews

4.6 out of 54.6 out of 5
328 global ratings

Top reviews from the United States

J. Rew
4.0 out of 5 starsVerified Purchase
Great replacement sub amp
Reviewed in the United States on February 2, 2019
I used this little amp to replace the burned-out amplifier module in my Energy ESW-8 powered subwoofer. It doesn''t sound quite as good as the factory Energy amplifier, but pretty close. There is a slight hum at low volumes, but you can''t really notice when music is playing... See more
I used this little amp to replace the burned-out amplifier module in my Energy ESW-8 powered subwoofer. It doesn''t sound quite as good as the factory Energy amplifier, but pretty close. There is a slight hum at low volumes, but you can''t really notice when music is playing and the bass is pumping. The output power is impressive - I have the gain set at minimum and the volume about halfway and my subwoofer gets plenty loud. It seems to be fairly equivalent to the factory Energy amplifier module in the ESW-8, which was rated at 100 watts (200 watts peak).

Interestingly, this amp''s output is noticeably louder when set to Sub mode compared to PBTL (full-range) mode. The constant low-level hum from this amp is also higher pitch in PBTL compared to Sub mode. In Sub mode, the low-pass crossover is very effective but the frequencies are not marked on the front panel so you have to guess where your cutoff point is. The amp''s low-pass crossover seems to be a 12dB/octave slope with a range somewhere around 40Hz-200Hz. I''m using this amp with the LFE output from my receiver, so I set the amp to full-range (PBTL) mode and use the receiver''s LFE crossover.

The power supply included with the amp seems to be doing a fine job but it is very basic and cheap. It is a generic laptop-style brick rated at 19V, 4.7 amps. I would not be surprised if the actual power supply peak output is far below the labeled 4.7 amps, based on the power supply''s small size and light weight. Total rated output power for the power supply is 89 watts (19V x 4.7A), so the amp itself can''t put out more that about 85 watts using this power supply. The amp is rated at 12V-24V supply voltage and you''ll probably need a beefier 24V/5A power supply to get the listed 100W output. Online forums and reviews, however, indicate that 19V is probably the sweet spot for the TPA3116 chip.

Overall, this amp is a real bargain. It works great as a replacement for a powered subwoofers''s internal amp and it would power some modest bookshelf speakers quite nicely. There''s a bit of hum but it''s not noticeable at listening volumes. The selectable sub/full-range mode is a great added feature and the selectable gain switches are icing on the cake. Great purchase, and I''d buy it again.
19 people found this helpful
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Jamisonia
1.0 out of 5 starsVerified Purchase
Unsuited for Bass Shakers
Reviewed in the United States on July 23, 2020
I bought this item to power two aura bass shakers. The crossover its not up to snuff for this job. It claims to go to 40hz, which is what you typically want for bass shakers. This crossover isn''t very aggressive however. Running test tones it was as strong at 40hz,... See more
I bought this item to power two aura bass shakers. The crossover its not up to snuff for this job. It claims to go to 40hz, which is what you typically want for bass shakers. This crossover isn''t very aggressive however. Running test tones it was as strong at 40hz, about half the strength at 50hz, and still slightly humming at 60hz. Compared tot he dayton sub amp SA100 which was losing strength at 40hz, basically gone at 50hz and nothing at 60hz. If you use this amp basically every bass tone will set it off. You''ll be shaking basically the whole move, which just ruins the effect. This item may be good for a passive subwoofer or speaker, but its crossover leaves much to be desired. Which is too bad, it would have been the right size and right price for the job.
14 people found this helpful
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Kenneth H.
5.0 out of 5 starsVerified Purchase
Could not be more pleased
Reviewed in the United States on July 22, 2019
I purchased two of these amps, and the quality control of them both is excellent. I also did diagnostic tests on the power supplies, and both were very reliable and steady at 19.3 volts 4.72 amps for one , and 19.5 volts 4.72 amps for the other one. I am using one of them... See more
I purchased two of these amps, and the quality control of them both is excellent. I also did diagnostic tests on the power supplies, and both were very reliable and steady at 19.3 volts 4.72 amps for one , and 19.5 volts 4.72 amps for the other one. I am using one of them to drive an 8 inch 200 watt RMS subwoofer, and the results are amazing indeed. I highly recommend this unit, as it has features like gain control switches, that similar amps don''t have. I am very pleased with the performance of these little amps. I can Highly recommend them.
13 people found this helpful
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Ancient-Geek
5.0 out of 5 starsVerified Purchase
Just passed it''s acceptance test
Reviewed in the United States on August 5, 2019
Test bed: input - LFE RCA output from a Sony A/V amplifier (PBTL setting, volume ~ 1/3, gain 26dB) material TV and: Jessie Cook - The Rumba Foundation David Gilmore - Live at Pompei Jiimi Hendrix - Live at Woodstock Smetana - Ma'' Vlast output -... See more
Test bed:
input - LFE RCA output from a Sony A/V amplifier (PBTL setting, volume ~ 1/3, gain 26dB) material TV and:
Jessie Cook - The Rumba Foundation
David Gilmore - Live at Pompei
Jiimi Hendrix - Live at Woodstock
Smetana - Ma'' Vlast
output - Cambridge Sound Works 5.1 system LFE speaker
test duration - 12 hours continuous
results clean, crisp, natural audio. no boom, no detectable distortion
6 people found this helpful
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K.H.
5.0 out of 5 starsVerified Purchase
Moves a 12” sub great
Reviewed in the United States on June 11, 2019
Very surprised, didn’t expect it to push my klipsch 12” sub, after the bash amp went. It thumps hard and exceeded my expectations. To be picky when you turn on sometimes you hear a pop, but for the $$ spent I can live with that.
9 people found this helpful
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Bachac88
5.0 out of 5 starsVerified Purchase
Deep, Hitting Bass. Great for my Computer Setup
Reviewed in the United States on April 2, 2020
After over 7 months of owning this, I have to write that this is a Great! addition to my setup. I have JBL ten year old full range speakers that I use for the mids and highs. I got these with an old Compaq desktop back in 2002 and still works. The Nobsound G2 Sub Amp... See more
After over 7 months of owning this, I have to write that this is a Great! addition to my setup.
I have JBL ten year old full range speakers that I use for the mids and highs. I got these with an old Compaq desktop back in 2002 and still works. The Nobsound G2 Sub Amp is pushing a 250W Dual Voice Coil Subwoofer that I took out of my old Hyundai. Let me tell you this little amp is Loud and provide respectful bass. I believe you can even have a decent party on a 12ft x 12ft dance floor with this set up, larger if enclosed. I usually use this on my laptop while working so it is at a fairly low level, though it can be heard throughout my brick house, bass and all.

Let''s get to the bass, I listen to Soca, Reggae, Rock, Jazz etc. and the bass is decent in all genres. I suspect some level of equalization is used because for that amount of deep bass, I can''t see this small amp producing this. The, what appears to be a low pass filter adjustment can produce bass from punchy to deep and I use this depending on the genre I''m listening to. Punchy for jazz and rock, deeper for reggae, dancehall and reggaeton.

I would recommend this amp for rigs such as mine listening as levels such as mine. I''m not going to push this loud for parties, I don''t think it would survive long but it does a hell of a job for casual listing.

I like that I could listed to music across the room as most computer speakers are "near field" and only sound good when sitting near to the speakers. With my setup, this Nobsound provides good sound for a small price. Get it.
One person found this helpful
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Dr. WhoTop Contributor: Golf
5.0 out of 5 starsVerified Purchase
Add a subwoofer to a receiver without a SUB OUT
Reviewed in the United States on June 23, 2021
I have a Pioneer VSX-305 Prologic Surround Receiver. In the back of my Receiver are the following: 2 Speaker Output for Front A 2 Speaker Output for Front B 1 Speaker Output Center 2 Speaker Output Rear Surround My speaker connections are not... See more
I have a Pioneer VSX-305 Prologic Surround Receiver. In the back of my Receiver are the following:
2 Speaker Output for Front A
2 Speaker Output for Front B
1 Speaker Output Center
2 Speaker Output Rear Surround
My speaker connections are not RCA.

As you can see there is no SUB Out for a subwoofer since my receiver pre-dates the 5.1 standards.

I connected it by buying a Speaker Line to RCA on one end converter. This is because my receiver speaker out is not RCA but open wire. The problem I had was that I bought 5.1 surround Pioneer speakers so Front A, Center, and Rear Surround were used, the only Speaker port open was Front B. I tested it and this amp does not work on Front Speaker B. So I disconnected the Rear surround speaker wires from the receiver and connected this sub amp instead. Then I connected the Rear surround speakers to the Front B ports. That worked, the only problem is now is since the Rear Speakers are now being used by the subwoofer, the Prologic surround will not sound like a real surround, and I am now using the SFC Mode(Studio Setting) so that it is working with the Front A, Front B, and the Rear Speakers(which is now connected to this Amp and Sub).

To connect this amp to the Subwoofer, I cut some 14 AWG speaker wire and put Banana plus on one end, and connected it to the output of this sub amp. Then I connected the other end to the Sub.

Adjusting it was simple. While playing some music, just put the Sub Freq dial to the center and just turn left and right until the sub just blends with the sound of the rest of the speakers.

I listen to music from my turntable and my tape deck, purely old-school analog, so I don''t care about the Prologic surround. The sound is really very good.
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Demontay G.
5.0 out of 5 starsVerified Purchase
Nobsound G2 to Klipsch RW10 Subwoofer. I''m highly surprised!
Reviewed in the United States on September 6, 2019
After extensive research, I decided to take a gamble by taking the cheaper route and purchase a mini subwoofer (Nobsound G2 amplifier) instead of purchasing the Bash 300S Plate Amplifier. The G2 is connected to a 10” Klipsch RW10 subwoofer (the Klipsch amp plate... See more
After extensive research, I decided to take a gamble by taking the cheaper route and purchase a mini subwoofer (Nobsound G2 amplifier) instead of purchasing the Bash 300S Plate Amplifier.

The G2 is connected to a 10” Klipsch RW10 subwoofer (the Klipsch amp plate produced 450 watts RMS output)/280 watts). The G2 amplifier output is only100 watts.

The second and third (switch controls) picture shows my gain, volume, and switch control settings for my Klipsch subwoofer.

It takes a minute to adjust the amplifier settings to get the bass you are looking for your subwoofer. My recommendation is to test the settings by listening to music with bass or go on Youtube and search Euro Bass Express - Slow Bass and Euphoric Midnight Bass disk 1/track 2 or disk 3/track 13 for gain and frequency adjustments.

I''m really surprised how well the G2 pushes this power-hungry subwoofer. It does well enough to provide the deep quality bass that is needed for my surround sound in my living room.

Make sure to follow the instructions under the product description on the Amazon App.

I recommend this amplifier and plan to buy another to power my Polk PSW10 subwoofer.
4 people found this helpful
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Top reviews from other countries

James Van Meggelen
5.0 out of 5 starsVerified Purchase
Boom for the buck.
Reviewed in Canada on September 3, 2021
I needed something inexpensive to drive an old non-powered sub-woofer I''d gotten from a friend. The price was right on this so I took a chance. For such a small little device, it sure packs some punch. It''s doing the job I need it for perfectly, and has thus far better...See more
I needed something inexpensive to drive an old non-powered sub-woofer I''d gotten from a friend. The price was right on this so I took a chance. For such a small little device, it sure packs some punch. It''s doing the job I need it for perfectly, and has thus far better quality and power than I was expecting. I''m no audiophile, but this thing is worth the money; of that I''m sure. For those experiencing buzzing, make sure you power this from the same electrical source as the rest of your system (same power bar). The one I have is silent when there''s no signal.
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Jason
5.0 out of 5 starsVerified Purchase
Impressive little Amp!
Reviewed in Canada on September 23, 2020
I was rather hesitant in making my decision to buy this amp, but when I checked out the other reviews, I decided to give it a try. This is a very impressive little amp for driving a sub-woofer. I am using it to drive an old Pioneer 8" driver, and have found I don''t need to...See more
I was rather hesitant in making my decision to buy this amp, but when I checked out the other reviews, I decided to give it a try. This is a very impressive little amp for driving a sub-woofer. I am using it to drive an old Pioneer 8" driver, and have found I don''t need to go beyond the 1/2 way point on the volume control using the 26dB setting to get the level of bass that I desire. I noticed that a number of people were complaining about a pop when turning the amp off. I am not experiencing this problem at all. I''m very happy I made this purchase.
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Bill
4.0 out of 5 starsVerified Purchase
Working well so far
Reviewed in Canada on December 7, 2019
Not an audiophile and forced to get an amp for an Onkyo 5.1 receiver with hdmi inputs with only pre-outs for the sub-woofer, replacing an old two channel. Existing speakers are 4 ohm and power levels acceptable. Connections were simpler than I anticipated. I had an old...See more
Not an audiophile and forced to get an amp for an Onkyo 5.1 receiver with hdmi inputs with only pre-outs for the sub-woofer, replacing an old two channel. Existing speakers are 4 ohm and power levels acceptable. Connections were simpler than I anticipated. I had an old single RCA cable and the two speaker wires. Higher rating not given because requests for reviews are before we really get a chance to work it.
One person found this helpful
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Chuck
5.0 out of 5 starsVerified Purchase
Absolute bargain
Reviewed in Australia on February 4, 2021
Cheap, good sound and really fast delivery! I bought a cheap 450W powered sub on eBay but it didn''t work. Scouring the net I found this amp and decided the outlay was worth risking on an unproven speaker. I ditched the old amp (but salvaged the banana plug terminals and...See more
Cheap, good sound and really fast delivery! I bought a cheap 450W powered sub on eBay but it didn''t work. Scouring the net I found this amp and decided the outlay was worth risking on an unproven speaker. I ditched the old amp (but salvaged the banana plug terminals and internal wiring) and hooked up this new amp—needless to say, it surpassed my expectations. TBH, I''ve noticed the tiniest bit of a hum from it, but I previously had huge issues with a ground loop that made my previous set-up un-listenable. Once I''ve got music or a movie going, the hum is not at all noticable, even on quiet stuff. From what I''ve seen, there aren''t many other mono amps at this price with a frequency dial. And there''s even fewer with a bridged mode (PBTL), not that I need this functionality myself. My only wish is that the frequency dial doesn''t have any measurements on it, so I''ve had to guess where the 80Hz mark is. Finally, mine was delivered next day. Very impressed!
One person found this helpful
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Joe Potter
5.0 out of 5 starsVerified Purchase
Amazing little amp
Reviewed in Canada on April 8, 2021
Such a great little amp. Using one to drive two speakers as mono in a different room and another to drive my subwoofer. Pulling this signal from a douk stereo amp and running it all through a tube preamp to give an overall master volume control. No nonsense, clear and...See more
Such a great little amp. Using one to drive two speakers as mono in a different room and another to drive my subwoofer. Pulling this signal from a douk stereo amp and running it all through a tube preamp to give an overall master volume control. No nonsense, clear and powerful. Couldn’t ask for a better mono/sub amp
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