This is the kind of review and test video that we can never find, and usually, never for the specific product we are looking for. Very detailed!

Excellent video. Am a novice and this video has improved my knowledge greatly. Love the honesty right off the bat. The right amount of detail without trying to sound much more intelligent than the viewers. This is how reviews should be. Many thanks. I bought one on strength of this review.

John, another good video. Some reviewers sound more like a QVC commercial but your philosophy is to approach this with an open mind, give us the numbers, and allow the viewer to make up our own minds. Well done.

we need more of this guy. THANK YOU VERY MUCH

I bought two of those about a year and a half ago they were normally on sale between $19 and $24 I got lucky and found one one website selling them for $17 that’s why I bought two. I got curious and took one apart and modified it with some different capacitors resistor values and my custom built five amp linear power supply. Out of all the Chinese cheap plasty amps I got to say bang for the buck this is the best one I’ve ever tested the stock one is hooked up to my TV and two speakers the one I modified is in my workshop blasting away daily for the last year and a half no problems.

Thanks for the review John. I have been looking for a small amp to use with a computer. Will look for a laptop supply, should work great for what I need.

Merci pour le partage. J'ai acheté cet ampli grace à votre test et j'en suis très satisfait. ses performances ainsi que sont rapport qualité-prix sont excellents.

I run a dual bridged version of the TPA3116 d2 with dali ikon 6 floor standing speakers. They are 6 ohm. I changed the inductors to 10uH and reduced the caps to 330nF. Sounds beautiful now. Set up right, these are superb amps.

Thank you John. Nice video and review.

that's pretty impressive little Amplifier complete analysis, I hope every reviewer doing this, very nice video

Thanks, John. Fine review.

very nice review. So many people dont understand RMS power today and so many of the specs ignore it. For an amp that small 20 watts rms is huge. Especially with the low distortion level. and how you show the real specs when clipping. I am going to try my laptop power supply that specs out for 19v and try it on my suitcase speaker to see how loud it gets. I need something loud for my suitcase speaker for my car because of road noise. Also need something with large capacitors to handle an occasional punch bass. Surely wont bring it up to clipping rate very often but running maybe 10 to 15 watts. I already tried it with a 12v lithium battery and the draw shuts the battery down to its protective circuit. So if it works well with my laptop supply I may put in a small pigtail to wire it to my battery with 12 gauge wire.

@JohnAudioTech Thanks for the informative and insightful review. I bought a couple on Amazon a while back. I found there's plenty room in the case to install a small brushless fan over the heat sink, drilling a few holes down either side of the case for air flow, which increases efficiency by actively dissipating allot of that excess heat. I applied some hot glue over the coils reducing the risk of mechanical failure too. They're great little amps at £40ish on Scamazon, four years on, they're quite a few alternative types of similar build quality, performance and quite a few really crap ones people would do good to avoid like a dose of the clap! You do get what you pay for. 😉

I just bought this as my first amp for ~22$. Thanks for the review!

@craigcharlestone

4 жыл бұрын

@JANRED --- Yo dum dum... sound has zero to do with price.

@elyserva7903

4 жыл бұрын

craig charleston it does actually! Not all of us needs to go on a Ducati when all you need is a Super Cub! 😄😄😄 ✌️

Great video, very helpful. I see the reason for that standby power swich, the caps are remaining charged and cones dont pop when powering on. This is serious problem with all this boards without enclosure. No problem with long throw drivers, but some expensive full range speakers can be easly demaged.

A'h the Strawbs, used to reherse in the back room of the White Bear pub in my old home town of Hounslow, a suburb west of London before they were famous. Great band they were very good live.

Thank you sir for such a detailed analysis.

Good Review, subscribed!

"Oh no the battery quit" LUVVIT!!!! Well worth watching this one to the end...

@duroxkilo

4 жыл бұрын

such a great ending to a nice vid

Hi, thank you for this video. I have a question regarding the frequency response test. When you used the 8 ohm load, the test looked pretty nice. Just one thing came to my mind...you used resistive load for the testing, right? Would the response be different if you used actual speaker, which (I think...) acts more like an inductive load?

I just bought one of these from Ebay.. I never held out much hope that it would be any good.. Oh, how I was surprised at the sound quality.. Amazing little amps for the very low price.. :-)

I just ran across Weiliang/Breeze Audio last night (while perusing through AliExpress). Never heard of them before. The unit that really caught my eye is their DP1 amp; 50Wx2 plus 100W sub, bass and treble controls, bass volume (separate from main volume) AND bass frequency adjustment (right on the front of the unit!). I wish they would give a little better specs (like THD and RMS figures) on things like this. Just before I shut down for the night, I stumbled across their 6-channel surround sound system! 50Wx5 plus 100W sub. I'd like to see reviews on one or both of THESE units!BTW; nice review vid on this little unit! Thumbs up!!!

@rockdog2584

6 жыл бұрын

I almost wish I had found these a couple of days ago. As it is, tomorrow I should be getting the SMSL AD18 that I ordered on Thursday. It's gonna power the new sound system for my computer. That 5.1 surround sound system sure would have spiced things up in here (for less than half the price of the AD18!). C`est la vie!

@miasmator

6 жыл бұрын

The 2.1 board has one TPA3116 BTL for stereo and and TPA3116 in PBTL mode for the sub. I tested one and didn't like the filter circuit since it had some issues with bass gain.

Great review my bro 👈🎧 But now after watching your video, im feelin confuse :-s which prefer, aiyima a07, fosi audio bt20a or breeze audio ? Can you recommend...

thanks for the lesson some important information you reveal...

Great video John, if you've got the time, it'll interesting to see if you could modify this unit. Focusing on the L, C and thermals to achieve better HF and 4 Ohm performance. Perhaps adding a power relay for battery use and proper LED indication? Might need new box though? A home spun power supply might also be of interest? You could call it a JAT (Breeze) 50+50 Watt Power Amp :)

I use this one to drive a pair of NS-10 and it's just incredible how much CLEAN power this amp can deliver for such a size and price. I run it with a 24V 5A power supply. If you hesitate to buy one, one word : GO!

@jackjohnson9989

5 жыл бұрын

Dynamic Rockers - Where did you purchase your 24V 5A p/s ?

Do you recall what the spec for the banana jacks is - none of mine seen to fit and the connectors seem to be larger than my standard stereo equipment which is odd for a mini amp.

Great review! How do I use it @ 8 Ohm loads? my speakers are 4-8 Ohms. I have a 19V adapter.

"Oh no the battery quit!" Lmfao on the floor! ... Incredible in the moment video, JAT, YOU THE MAN!

@rich1051414

4 жыл бұрын

I pictured the battery throwing it's hat on the floor and walking out the door.

This is my main amp for movies and tv with. I love it with my Klipsch rp150's.

Hi John what would you recommend for connecting in-wall speakers for two computers. I don't need an amp with Bluetooth but it would be nice. I don't know if it's better to have an amp with multiple inputs or AB switch? I am definitely on a budget and not an audiophile by any means, good sound is good enough for me. Thank you in advance!

Would running this amp with a 4ohm speaker pair using a 19v 3.5A laptop brick not make it heat up too much? At around quarter to half volume

I love you brother you are awesome always giving something worty 😍.

Can you discuss different Dacs, Wolfson or others

At 9:28 you have the heat sink hot, don't you think that would shorten the life of those 5 caps crammed up to it? Or do you think the hot situation only happens in the stress test and normal music would not get them hot?

Hi, What is the Damping Factor of the unit? Thank you.

Thanks for this video. I am running their 100w x 2 (4.2 Bluetooth) amplifier with two of those TPA3116 chipsets inside. I am running from a 12v battery to a DC-to-DC step up booster module set for 24v into the amplifier. Is this the best voltage to run these amplifiers at? Would adjusting the voltage UP increase power output? Not that I need the full 100w + 100w, just curious what is best for cleanest and best for dynamic headroom. My speaker loads are 4 ohms per channel. Thanks...I did a vid on my KZread channel if you want to see

@jimcatx3090

4 жыл бұрын

Chris DIYer buy a real amp these are good for home use

@johncoops6897

3 жыл бұрын

Using a stepup converter is not really optimum for a variety of reasons. If you want 24V then use 2 x 12V batteries rather than just one.

3:39 - "Close the door and the light STAYS ON!" :)

The idle current shown in the video is the same as idle current listed on the TPA3116 datasheet when the amp is on. If it is shut off - "power" switch turned off - the amp should go into shutdown in which case the current draw is 50uA. Still might drain a battery given enough time, but at less than 100th the rate mentioned in the video.

AS you say, the HF response of D-class chips varies with the load/impedance they're driving, so the slight droop with a nominal 4ohm speaker and flatter response into 8ohms ones is to be expected. 6 ohms seems to be a common quoted figure for speakers these days, that may be what they assume many of these amps will be paired with. That said, those are _nominal_ figures, and impedance usually swings considerably over the bottom few 100 Hz (and rises steadily over c. 1KHz). I wouldn't be surprised to see parts of the curve for a 4 ohm speaker dropping to a couple of ohms in places, hence all that current and heat. What's more this is usually completely wasted, some of it may well be subsonic and completely inaudible through bookshelf and even medium size stand-mounts - I'd be inclined to roll off the signal below c. 50Hz with a high-pass filter (a DSP is easy, but more problematic if you're not using a PC-based player. For vinyl you'd want to use a phono stage with a subsonic 'rumble' or warp' filter.

Thank you bro.

Strawbs, from Hero and Heroine. Great album.

Excellent stuff. Please keep it up. Lots of thoughts. Are those filter caps in your mind, or are they reservoir caps? Can you probe your power on the way in and again at the amp IC to get some idea what’s going on? It matters a lot. Is the IC hogging current at certain frequencies? Can you see anything like an inverse frequency relationship before and after the cap array? The basic thing I’m looking for is whether or not the bulk capacitance was selected to match the design characteristics of the IC. I have a running debate with the KZread audiophool community regarding the use of power supply side caps. On the output side the frequency dependance can be calculated and tested. On the PSU side, other than on tube gear, things are very, very strange. Is more always better? Do the LCR (don’t forget R) properties on the front side make a difference? Does it depend on the exact specifications of the solid state circuit? I cut tube gear out for many reasons. The most important is that VT tech can only do so much. Absent some inductive magic (see El Paso Tube Amp guy) you will be bathing in line frequency anyway.

@markanderson8066

6 жыл бұрын

I'd think they were reservoir caps. IF fed from an analog (non-switching) supply it's possible they would also serve some filtering, but switching supplies yield no 120hz component to be filtered. Instead they generate 20-40khz noise which ideally require a low pass filter to remove, preferably with a series choke. I don't think the 4700 mfd cap alone would serve that. Better to have a small value cap as a high freq bypass I think. Might make an interesting experiement for someone familiar with Spice circuit simulations.

Can we tweak this to be just power amplifier?

I purchaded this amp a while ago. I noticed a roll off at lower frequencys. Didn’t measered it though. Could it be the output impedence of the source combined with the position of the potentiometer?

@JohnAudioTech

6 жыл бұрын

It is possible if the input impedance is too low for the source. Input impedance is around 5K for this amp.

I seen a video on the same amp, the caps said 25v and some popped so he replaced them with 35v and more capacity and it was fine.

@JohnAudioTech

6 жыл бұрын

These are 35v, so perhaps they got the message.

John brother i want your help to find answer of a question . If i connect a potentiometer to an amp to adjust the volume will it affect the wattage output and sound quality? Please tell me.

@johncoops6897

3 жыл бұрын

A potentiometer can only lower the volume, and then the wattage output also goes down (think about it). As for sound quality, there is a situation where the potentiometer will cause a change to the frequency response. Beyond the scope of KZread comments to explain why, plus the effect will be different on different amps anyway.

If you used batteries you need to install a switch on the battery line or disconnect it

Hi John. What's the size of the power adaptor on this unit? 2.1 x 5.5mm?

@franchisefred4066

3 жыл бұрын

On these amps should be 2.5 x 5.5

Do you know what the best unit out there is which has little noise? Preferably with a case so not just a circuit board. Thanks

@JohnAudioTech

5 жыл бұрын

LM1875 based amplifiers are quiet and sound good. The ones that come cased tend to be more costly. I really haven't tested any class D amps that are quiet yet.

excelente

Request: Nobody has reviewed a TPA3255 amp yet (much more powerful 50v) and bangood has one...

I am running 2 amps,a fosi audio for my bass. The bass and treble change my low and mid bass timbre. For my tweeters the breeze audio ( no tone controls, same amp). What do you think of throwing a car subwoofer capacitor in line? Once charged this should offer the amps all the current they would want. An easy upgrade to the 24v power supply, with less than decent ampere ratings. Could you do this at 24v? would you need 2 caps in line?? Is it worth it???

@johncoops6897

3 жыл бұрын

Of course not. The capacitor cannot solve an inadequacy of your power supply.

@stephenmcbride6359

3 жыл бұрын

@@johncoops6897 You right, I went a whole different direction. I am now running a powered sub(David 300 with an Infinity replacement woofer) with the speaker ouputs going into it. I have also swapped the power amps around to give tone control to the tweets. For such small stuff, it rocks out.

Is there any good mods available for this board? I want as little hiss as possible. Speakers I have are fairly sensitive and it gets irritating at times. Thanks to anyone who has some info!

@jimcatx3090

4 жыл бұрын

FreshLemunz ya throw it in the trash

I would take that heatsink off and apply a large block or a large heatsink that would touch the case to dissipate the heat better or maybe cut a couple holes and install a fan or even both.

@BlankBrain

6 жыл бұрын

I have used a heat pipe CPU cooler without the fan. Of course the case doesn't fit. The base of the heatsink is large, so there has to be enough clear real estate around the chip. The biggest challenge was fabricating a bracket to hold the heatsink in place (no pressure on the board).

@EliteRock

6 жыл бұрын

It would definitely make sense to use the case as a heatsink. Looks like the top half can be removed by itself, so a block of aluminium could be fashioned with a bit of trial-and-error. Dissipating a lot of the chip's heat directly to the outside would keep temperatures inside the case down and keep the filter coils a bit cooler too. I've been thinking of doing exactly this with a pair of SMSL TPA3118's, although they're the 'slug down' version (only have the PCB to sink to) and and it wouldn't be as effective as with the 3116.

decoupling visually seems ok for that price, but idk about those inductors though

Hey John. I've a bit of confusion. The mono version of tpa3116 you tested delivered 50w into 4ohms mono. However, the same chip is used in this one. And it's 50w into TWO channels. Can you tell me why is that? Love from Pakistan!

@JohnAudioTech

4 жыл бұрын

The mono version parallels two bridged channels which allows for lower impedance loads (2 ohms) but doesn't increase the power any at four ohms.

@abdadkhbqefkehfkf

4 жыл бұрын

Understood! In your opinion, will the tpa3116 mono be stable down to 2 ohms? (I know the data sheet says yes) Thank you.

@JohnAudioTech

4 жыл бұрын

@@abdadkhbqefkehfkf The chip can handle it, but the heatsink on the board is a little small. Perhaps it would work okay at 2 ohms when keeping the supply voltage under 18.

i got a lepai lp2020+ and i accidentally pluged in a 27 v dc to it , do you think its worth repairing? and which part will get burn if i over volt the amp? thank you

@johntokyo7638

3 жыл бұрын

My opinion is they are so cheap it’s probably not worth repairing. But take the case apart and have a look inside. If you are lucky it may have a replaceable internal fuse but probably not. You will probably see something damaged when you take it apart especially if it smoked.

Love your video's John, you don't miss much. There are TPA3116D2 amps going for £3.50 (around $4.75). Not in a fancy case but from one KZread video a very nice little amp once the gain was sorted. You can get a 2 x 100W (?) for £5 but it's going to be fun fixing the gain. Most of the TDA7498 amps have thumb switches to reduce the gain. Pretty well all these D-Class amps have undersized heat sinks but running one in a case with no vents seems silly.

@God-yb2cg

6 жыл бұрын

Have one of those shitty 5 bucks classD TPA amps from ebay (too lazy to check the IC model), I've ran 4ohm speakers from it, currently do 8ohm speakers, apart from the serious pop when I turn it on and off, some strange noises one or two minutes after powering it on, on one of the channels and the retarded choice of using a molex connector for audio input that has poor contact and wants to kill my speakers (sorry for rant), I've actually never got the heatsink to even be near hot, that thing barely gets lukewarm, I need to touch the heatsink with the back of my fingers and close my eyes to be able to feel a tiny bit of heat (and I've got my neighbor 3 floors above complain about music being too loud), though I haven't run a subwoofer from it though, only somewhat efficient speakers. Anyway, I'm considering getting another amp one with a power/mute switch because of that pop when turning it on/off because I'm afraid it may slowly kill the tweeters. Also I seem to be paranoid about the amp passing ultrasonic signals to the speakers, though that should be unlikely due to filtering. Also that thing has 0mV DC offset on one channel and 10mV on another, I think that may mean some cap is faulty.

@tolgaayrim

6 жыл бұрын

In this Chip's datasheet, they wrote you can get 100 watts into 2 ohms. But I think it will have a lot of THD. I have 2 of this amp, but my speakers are 8 ohms. I didint measure the output in 2 ohms.

@miasmator

6 жыл бұрын

Yes, you should definitely use some other amp for tweeters or heavy filtering or some delayed relay protection. There's a mute feature in TPA3116 but not all the chinese crap boards expose it.

@God-yb2cg

6 жыл бұрын

Well, using other amp for tweeters can't be done since they aren't bi-wired and I that box doesn't seem to have any screws, I think it's glued on so I can't add another wire connection without risking not being able to close the box again, besides the wood is degraded. I think I'm going to bet on trying to fix my friend's vintage Marantz and getting a real and cool looking amp that way :D

@miasmator

6 жыл бұрын

The speakers might have first or second order crossovers, but I'm not sure if that is enough to avoid any damage. I'd recommend the TDA7492(E) or TDA7498(E) based boards if you want a similar kind of class D amp. I like TPA3116 quite a lot, but wouldn't use it for tweeters.

Yo adquirí ese modelo y, mi primera impresión fue muy grata; primeramente porque el diseño es mejor de lo que esperaba, su estética, si bien es sobria, se ve hermoso. En cuanto a su desempeño, puedo decir que me sorprendió su potencia y buen desempeño; obviamente, no podemos exigir que se encuentre a la altura de un amplificador de gama alta pero, no le pide nada a muchos amplificadores de su gama, suena bastante fuerte, aún en bocinas grandes, su sonido es cálido, los agudos no predominan y, los graves se hacen presentes sutilmente, sin siquiera requerir ecualización cuando, por ejemplo, se escucha youtube desde nuestros celulares o tabletas. Cabe aclarar que este amplificador no posee ecualización integrada, por lo que debemos tomar en cuenta a la hora de adquirirlo. Así también, al comprarlo, en mi caso, desde la app Aliexpress, se ofrece en dos versiones, con gabinete o sólo la tablilla de circuitos ya armada con los componentes, ésta última versión es más barata y ofrece la posibilidad de crear nuestro propio gabinete. El costo de este amplificador, en pesos mexicanos fue alrededor de $500 a 600 pesos, en 2017. Posteriormente, adquirí la segunda versión de dicho ampli, el cual posee conexión Bluetooth, adicional de las conexiones originales RCA. Voy a cumplir dos años con mi primer ampli y un año y medio con el segundo. Lo recomiendo para crear un pequeño sistema de sonido con algún par de altavoces que nos sobren y conectar nuestros smartphones o tabletas, recomiendo la versión Bluetooth para evitar tanto cableado.

Hello, John. Happy Sabbath to you, brother.. May The LORD bless you richly. I am a newcomer to your channel and an instant aficionado. I am wondering, would it be safe to bridge this amp for an 8 ohm speaker with an 18v input, and would it deliver a solid 50 watts under these conditions. Thank you for your contribution to the youtube universe.

@johncoops6897

3 жыл бұрын

You cannot bridge them easily. If you want more power, buy an amp that has the bridged input circuitry or even better just buy a more powerful amp.

4:57 - Those are NOT SANYO caps, they are fakes. Sanyo have a K shape vent, never an X. See hobbyaudios.blogspot.com/2011/04/identify-good-original-capacitors.html Yeah, I know it's an old video, just adding this post for future reference.

What power do you prefer to get the best effect?

@johncoops6897

3 жыл бұрын

Any power will give a best effect. Your question is silly.

I've read that the "sweet spot" for the TPA3116 is 19 volts.

@EliteRock

6 жыл бұрын

Depends what kind of music you play through them. Most modern releases are compressed to buggery (loudness war) and don't need any real headroom for dynamic peaks (they don't have any), even when they're played loud, which is why people are often happy with relatively low-powered amps. Older, non-molested recordings/masters (i.e. pre late-90's CD's and vinyl) are another matter - they often need those extra volts when played at similar overall SPL's, particularly for percussion/drums.

Do you know the size of the DC barrel jack it needs?

@franchisefred4066

3 жыл бұрын

2.5 x 5.5 mm

Whats the best adapter to use for this AliExpress amp?

@johncoops6897

3 жыл бұрын

Any adapter that provides the amount of volts and amps that the unit requires, and is tested and CERTIFIED for electrical safety and EMC (interference) in your country. Hint: don't but from Ebay or AliExpress.

As soon as you cracked the case I said "That heatsink is way to small." My 80 watt Pioneer SX-60 has a heatsink twice the size of that case.

@theoneohmresistor

Жыл бұрын

yours is a class ab (~50% efficient) and this is class d (90% efficient)...

Do you need to filter laptop power supply? Or can you plug it directly into the amp?

@JohnAudioTech

5 жыл бұрын

Direct plugin works fine for me.

@killermurderer2208

5 жыл бұрын

@@JohnAudioTech thanks John, have a great day!

I have this amp and i have got 2ohm speakers jbl gto 937 to pair with this amp... is it ok to run it at 15v? Its the lower voltage on the power adapter i have. Thank you

@JohnAudioTech

5 жыл бұрын

2 ohms is a bit low. I wouldn't recommend that.

@RuiPintoMusic

5 жыл бұрын

@@JohnAudioTech Already tested it and it was ok, didnt run them yet for many time but its working fine, i think these speakers are almost 3ohm, they state that they can be used in 4ohm head unit in the box, but they are rated as 2ohm. Thank you

@johncoops6897

3 жыл бұрын

@@RuiPintoMusic - so you ask a question, then act the expert and ignore the advice. You are an idiot. BTW - the amp will overheat on 2 ohm loads. It will overheat on 3 ohm loads too.

If you don't need much power, It just might run on 5 Volts. It may make a loud pop if the power switch really killed the power.

What about speaker protection in this little amps, i know that the chip has build in protection but i don't see that even over temperature protection works

@JohnAudioTech

6 жыл бұрын

I haven't seen speaker protection used in these small amps.

@vladimiraleksic3786

5 жыл бұрын

Is there any chance for you to do a video where you add speaker protection circuit in this amp. I think that a lot of people would be interested in that.

@johncoops6897

3 жыл бұрын

@@vladimiraleksic3786 - WHY? What exactly do you want to protect your speakers against? Bad disco music?

I run mine from a 19v laptop power supply, great, cheap bit of kit.

@JohnAudioTech

4 жыл бұрын

Yes, those laptop PS bricks are perfect for that amp.

Is it any good for TV add on speakers ?

@johncoops6897

3 жыл бұрын

Of course - what difference could it possibly make whether it is a TV or not?

Hi, is this working with Yamaha speakers 6 ohms. Thx

@JohnAudioTech

5 жыл бұрын

Yes. they should work fine.

@lenovol6685

5 жыл бұрын

@@JohnAudioTech thanks John !

This review lacks of a power on/off test. In my experience with the TPA3118/3116, it oscillates according to the input resistance value (the volume potentiometer’s setting) on power on. The only way to solve this issue is a logic/analogic circuit, to control the MUTE and SDZ (aka Disable) inputs during switching on and off, which I don't see here.

👍🏾👍🏾👍🏾

Couldn't you add an internal fan to cool with a few drill air holes !

@loathecliff9364

3 жыл бұрын

No need. In normal use it never even gets warm.

Diagram please

JohnAudioTech Hi i want ask i have this amplifier i want power supply 24v 4a 12v 1A it a safe to amplifiers ? im case made to cooling better and want vu meter.

@JohnAudioTech

4 жыл бұрын

24v 4a is safe for the amplifier

@qzf809

4 жыл бұрын

@@JohnAudioTech and 24v 5A is safe? Cuz I just ordered one More Amps more power? Can you reply please?

@JohnAudioTech

4 жыл бұрын

@@qzf809 The amplifier will draw only the amperage it needs, so you could have 24v and 100 amps. It won't give you any additional power. If you run the amp at 24v with 4 ohm speakers, beware that it will run hot and have a reduced life if you play it at a high volume.

@qzf809

4 жыл бұрын

@@JohnAudioTech thank you so much bro for your reply, i will get 8 ohm subwoofer then.👍👌take care and stay safe

How is sound quality?

@jimcatx3090

4 жыл бұрын

Sq team Turkey it’s good not a big power amp but better then most Bluetooth speakers systems

Can this amp be bridged to one channel?

@JohnAudioTech

6 жыл бұрын

No. The outputs are already in a bridged configuration.

@miasmator

6 жыл бұрын

Well, TPA3116 has both BTL and mono PBTL modes. Not sure if this amp can run in PBTL mode though. The spec sheet section 7.4.1 describes this. You can get a lot more than 50W per channel in PBTL mode.

how many amps

@johncoops6897

3 жыл бұрын

One amp was reviewed in the video. There is nothing stopping you buying more than one if that is what you want.

Thank you, thank you, John! Keep in mind that some people, like me, may want to use the amp as a "varmint calling amplifier" out in the field with a 4-8 ohm weatherproof speaker. Michael - wb6csh

Putting the electrolytic capacitors right next to the heat sink is a poor design. They will heat up and dry out.

@davekazoroski6548

6 жыл бұрын

May not be as big a problem as you think. My experience has been that heat sinks that get "blazing hot" with sine wave testing only run lukewarm with music or speech, even if played very loud. I seriously doubt that the heat generated would make the lifespan of the capacitors unacceptably short.

@damacc8365

6 жыл бұрын

You can replace them with 1uf x7r or y5v smd caps (they fit nicely onto the pads), while you are at it you can also lower the gain to reduce hiss :)

@davekazoroski6548

6 жыл бұрын

A little addendum to my previous comment. The majority of the heat that affects electrolytic capacitors does not come from the outside, it is actually generated internally by ripple current flowing through the ESR of the capacitor. This is why ESR testing is important, a high ESR usually means that a capacitor will cook itself to death in short order.

@miasmator

6 жыл бұрын

The main problem with these small amps isn't the placement of caps, it's the case and heatsink. Since the heatsink isn't exposed outside the aluminium case, all heat will build up and warm up the air inside, then radiate out via the case. It doesn't really matter how you locate the capacitors since they get hot anyways. Then again, this amp will produce only around 5W (/sqrt(2) since the output power is not RMS) of heat with max load. To stay

@MrSookonn

5 жыл бұрын

@@davekazoroski6548 Wrong, these d class are supplied with constant voltage 12-24v dc power adapters, not from ac source directly through diode bridge. Only ripple is from fast current changes on a load.

If anyone's interested I reversed engineered a laptop power supply to provide 24 volts and I would produce a video showing the steps

Those little electrolytic's won't last long sitting right up against the heatsink!

5 seconds of this amp playing music could say ten thousand times more than all your words.

@drwatson32bit

5 жыл бұрын

Not at all, it'll sound like whatever you're listening on

looks like digital amps lack of deep bass all of them ....

99% chance those Sanyo's are fake. They should have a K type vent on top not an X

Focus you fack!!!

All sanyo is fake😂

Banana jacks do not fit on this amp.

@JohnAudioTech

6 жыл бұрын

The plugs I have fit nice and snug.

Oooooh, Banggood! If it no work you bang it. Then it work good. These Chinese companies use your good rep to sell their junk crap, not a good deal for you! I'll bet they didn't spend as much time designing this as you did reviewing it.

Junk amp has no bass

Another shitty review... why do people bother playing music samples through Utube’s compressed lossy algorithms? What do you think people could possibly evaluate from these samples? Plus, I own four Chinese audio products and hear no”hiss” from any of them. Not sure what you’re implying from this review... please elaborate.

Hi there! Do you know if this little one can work with 14 or 16 ohm loads?

@eksine

4 жыл бұрын

never have i seen an amp or speakers rated at that ohm, wtf are you using? the higher the ohms the lower the stress on the amp, I don't see why it wouldn't work, your speakers probably would blow first

@riccardobiemmi2103

4 жыл бұрын

@@eksine in planning to use 4 speakers in series, two for channel. 1 pair of speakers is 8 ohm, the other one is 6 ohm and I'm planning to mix the two types for each channel, so I get 14 ohm load per channel