I have 2 of these coming mid-January. I'm using them to drive my main speakers which happen to be on my desk atm. It's a Delcoid satellite/ subwoofer setup from around 1980. I'm concerned about them driving the sub as it's a 12" passive that can handle 500 watts rms. If these amps can't push it, I'll be returning them the same day I get them. I'm using a QSC GX5 amp right now. It works great with 500wpc but it takes up too much space on my desk. I'm disabled now and live with family so space is at a premium. Great review and you earned a new sub ! Thx for the info ! UPDATE: I've been running these amps for about 6 weeks now. I'm happy to say that they sound very good with my system. My 12" passive sub still hits hard but it's also controlled. No sloppiness here. I'm still amazed. I never thought that a class D amp could perform this good. I can't see how ANYONE would disappointed with these amps. Of course, don't expect them to outperform an amp that costs several thousand dollars. They still aren't as good as my GAS Ampzilla but unless I'm sitting back being VERY critical, I can't tell the difference. For every day listening for most people, the A07 Max will do the job nicely.
A quick way to know how much real power might be available with these class D amps is... Wattage = Amperage times Voltage. So, with this power supply. 36 volts times 6 amps equals 216 TOTAL WATTS POWER CONSUMPTION THAT IS EVEN AVAILABLE. In addition, most class D amps run around 85% efficient to their output. So multiply that total power consumption of 216 watts by 85% efficiency (.85) and that equals around 183 watts total. Divide that power by 2 as there are two channels and that is about 91 watts per channel maximum that can actually be made with this amp. Internal caps "might" improve the short-term power bursts slightly depending on the impedance of the speakers, but the power output specs are usually complete marketing vaporware. These amps are not bad for the money, but everyone should know these huge marketing power specs are not real when looking at these Class D amps. Even if purchasing the 48-volt power supply, it is only a little over 100wpc. I would not suggest using a 48v10amp power supply for these as one might have a meltdown eventually.
@@superidyt Hey man. I was searching for this amazing info so there are reviews saying the A07 normal is 95% efficiency. That is to say with a 32V 5A power supply = 32 x 5 x .95 = 152/2 = 76 by channel if i´m not wrong. Yeah, the marketing info is vapor info. Anyway for the price and small zones these amps are amazing, i will go for the Max in next weeks, it´s 113 by channel with a 48v 5A power supply. Keep in mind that these values are approximate and may vary depending on the specific usage and operating conditions of the amplifier.🍺🤝 🍺
I love your channel. Thank you for informing and entertaining without droning on or insulting our intelligence or talking too technically. As dumb as I am I can follow along well. Tim in Texas
@@ricardogoncalves4092 to be honest… it’s cheap and it works well. It’s sounds different depending on what source / streamer and dac and speaker you pair with. So far I am happy with it. I first pair with the WiiM pro plus with Sony SS-CS5 it sounds great and clear and detail. Then I change to iFi Zen DAC using my iPhone from usc-c source and it sound warm and a little mushy could be power source needed. Anyway it’s a really good buy, doesn’t heat up that much, volume always used at only 25% is more than enough. One thing is…. If your streamer or preamp don’t have a remote control then I have to always walk to the amp to adjust the volume as I am staying with my gf which as usual sensitive to loud noise. Hahahaha. In other words I wish it have a remote control but the. Again if more features means more cost.
@@ricardogoncalves4092hi sorry for late reply. I just saw this. I am satisfied with my purchase. Been using it for 4-5 months now. I guess it depends on what amp you pair it with too. I am using Sony SS-CS5 with wiim amp pro and sometimes with the smsl SU-1 dac. One thing. It sound better playing loud only my speaker. It’s the speaker character and not the amp character. All and all I have got nothing to complain about.
Took a bit to get used to your presentation, I'm all good now! I just ordered a pair of these A07 Max units, Amazon is selling them for $74 a pop here in the states. I already have the Fosi V3 and am being blown away by the sound coming out of this stupid little amp. I discovered that by boosting the line level input voltage that the sound improved greatly. I used a Douk Audio line level booster, $45 on Amazon. I also have the Sparko op amps, they muddied up the V3 so hoping the A07 will be better and play well with the Sparkos. We will have a three way shootout with a Sparko loaded A07, a stock A07 and the Fosi V3. Going to be fun!
I love these amps and there great for budget applications. However save a bit more and go for the Sabaj A30a 100wpc into 8ohms onboard dac and a bass low pass filter (no high) .. It sounds head and shoulders above these units, if you shop canny, you can pick one up for £425 . Its insanely good after 50 70hrs burn in . 90% out of the box . Great and refreshing review..
Listened to the sound tests on my home theatre system and with my AirPods and the only thing I could pick up is maybe the Fosi has slightly more bass coming through? Other than that, they sound identical to my ears. Will you be getting in some of the mini amps with the optical and usb inputs and the subwoofer pre out? I see both Fosi and Aiyima have them.
All these lower cost amps, as good as they are, have one fatal flaw IMHO... their volume knob acts as the power switch. They need a dedicated power switch so you can leave the volume set to your desired level. That would make them perfect for use as an extra amp for AVR systems that need two more channels amplified. Many are 11 channel capable, but only amplify 9, leaving you to provide an external amp for the last two (typically your AVR's rear height channels, like the Onkyo TX-RZ50). I plan to buy one and manually add a power switch. BTW... peak/max power means nothing to me and is a miss-leading spec, these manufacturers need to supply true RMS power (continuous) which is way less than peak.
@@UTILITARIANTVUK thanks, how does these two compares Marantz PM 6007? Or the new smsl ao300? Does this can drive better speakers since it's rated more watts per channel?
@@wric01 I don't think so. They use quality capacitors. I open a secret to you, capacitors don't have differences in sound if they have similar capacities.
fosi has much more dynamic in all frequency ranges, in the bass the fosi is more stable, the resonances in the bass are out of control with the aiyima. the mids are much more detailed with the fosi, the highs slightly more pronounced. the channel separation is better at the fosi which gives you more room and depth. the aiyima is more flat less dynamic overall. however, the frequency response seems to be pretty much the same and this is why people without good listening experience cannot hear the differences. there is no difference in 'color'. but now the important shit: inthe fosi v3 you will find the cheapest opamp on the market, the ne5534. and multiple persons did tests either with better opamps like the ad797 etc. or with very nice discrete opamp replacements like from burson audio etc. and these options give you even more dynamic and good control in the overall feedback loop of the amp. also again a tiny bit more channel separation. however, if you want to have the ultimate channel separation, you upgrade to a dual mono setup and it is worth it. thanks for the test. it helped me in making my decision what to buy.
I have 2 of these coming mid-January. I'm using them to drive my main speakers which happen to be on my desk atm. It's a Delcoid satellite/ subwoofer setup from around 1980. I'm concerned about them driving the sub as it's a 12" passive that can handle 500 watts rms. If these amps can't push it, I'll be returning them the same day I get them. I'm using a QSC GX5 amp right now. It works great with 500wpc but it takes up too much space on my desk. I'm disabled now and live with family so space is at a premium. Great review and you earned a new sub ! Thx for the info !
UPDATE: I've been running these amps for about 6 weeks now. I'm happy to say that they sound very good with my system. My 12" passive sub still hits hard but it's also controlled. No sloppiness here. I'm still amazed. I never thought that a class D amp could perform this good. I can't see how ANYONE would disappointed with these amps. Of course, don't expect them to outperform an amp that costs several thousand dollars. They still aren't as good as my GAS Ampzilla but unless I'm sitting back being VERY critical, I can't tell the difference. For every day listening for most people, the A07 Max will do the job nicely.
Great review! Aiyima is more balanced, less v-shaped, and therefore.....better :)
Love your reviews. Keep up the great work. Looking forward to the monoblock review.
Another great video, can't wait to see the next one
Hopefully released on Friday.
Fantastic review . Thank you , I like the Aiyima as I think it has a little more depth to the music , but it is a close race .
A quick way to know how much real power might be available with these class D amps is... Wattage = Amperage times Voltage. So, with this power supply. 36 volts times 6 amps equals 216 TOTAL WATTS POWER CONSUMPTION THAT IS EVEN AVAILABLE. In addition, most class D amps run around 85% efficient to their output. So multiply that total power consumption of 216 watts by 85% efficiency (.85) and that equals around 183 watts total. Divide that power by 2 as there are two channels and that is about 91 watts per channel maximum that can actually be made with this amp. Internal caps "might" improve the short-term power bursts slightly depending on the impedance of the speakers, but the power output specs are usually complete marketing vaporware. These amps are not bad for the money, but everyone should know these huge marketing power specs are not real when looking at these Class D amps. Even if purchasing the 48-volt power supply, it is only a little over 100wpc. I would not suggest using a 48v10amp power supply for these as one might have a meltdown eventually.
How calculate A07 power supply for a pair of Pioneer SP-FS52?
@@superidyt Hey man. I was searching for this amazing info so there are reviews saying the A07 normal is 95% efficiency. That is to say with a 32V 5A power supply = 32 x 5 x .95 = 152/2 = 76 by channel if i´m not wrong. Yeah, the marketing info is vapor info. Anyway for the price and small zones these amps are amazing, i will go for the Max in next weeks, it´s 113 by channel with a 48v 5A power supply. Keep in mind that these values are approximate and may vary depending on the specific usage and operating conditions of the amplifier.🍺🤝 🍺
I love your channel. Thank you for informing and entertaining without droning on or insulting our intelligence or talking too technically. As dumb as I am I can follow along well.
Tim in Texas
Cheers Tim!
My fosi audio v3 just arrived and I am listening to it while watching this video. Hope I don’t regret 🙈
@darenLee what you opinion about the amp? Im thinking to buy one, the 48v version.
@@ricardogoncalves4092 to be honest… it’s cheap and it works well.
It’s sounds different depending on what source / streamer and dac and speaker you pair with.
So far I am happy with it. I first pair with the WiiM pro plus with Sony SS-CS5 it sounds great and clear and detail. Then I change to iFi Zen DAC using my iPhone from usc-c source and it sound warm and a little mushy could be power source needed.
Anyway it’s a really good buy, doesn’t heat up that much, volume always used at only 25% is more than enough.
One thing is…. If your streamer or preamp don’t have a remote control then I have to always walk to the amp to adjust the volume as I am staying with my gf which as usual sensitive to loud noise. Hahahaha.
In other words I wish it have a remote control but the. Again if more features means more cost.
@@ricardogoncalves4092 oh ya there is a newer version the Fosi Audi ZA3 but more expensive.
@@ricardogoncalves4092hi sorry for late reply. I just saw this. I am satisfied with my purchase. Been using it for 4-5 months now.
I guess it depends on what amp you pair it with too. I am using Sony SS-CS5 with wiim amp pro and sometimes with the smsl SU-1 dac.
One thing. It sound better playing loud only my speaker. It’s the speaker character and not the amp character.
All and all I have got nothing to complain about.
Took a bit to get used to your presentation, I'm all good now! I just ordered a pair of these A07 Max units, Amazon is selling them for $74 a pop here in the states. I already have the Fosi V3 and am being blown away by the sound coming out of this stupid little amp. I discovered that by boosting the line level input voltage that the sound improved greatly. I used a Douk Audio line level booster, $45 on Amazon. I also have the Sparko op amps, they muddied up the V3 so hoping the A07 will be better and play well with the Sparkos. We will have a three way shootout with a Sparko loaded A07, a stock A07 and the Fosi V3. Going to be fun!
I'm like mould, I grow on you very slowly but hard to get rid of. 😄👊
@@UTILITARIANTVUK 🤣😂🤣😂👍
These were decent little amps, well worth the cost. They will drive Magnepan speakers. ;-)
@@michaelwright1602im using A07max in mono. Sound very good. So i wonder if v3 mono is better? No one compared them
@@AnhNguyen-iw7cf Probably about the same...
Aiyima sounds more open. It has more transparent sound.
Both make sound, that's it. The looks inside I like very much.
Hello. How does the sound of these amps compare to the sound of the Rotel integrated you have there?
Nice video, thanks for the upload
I could replace some part in aiyima because it has neat design. And better form factor, to stack with bluetooth receiver, fiio br13
I love the way you do the reviews . 👍👍👍
The differences between these two are minimal sonically, aesthetically I prefer the A07 max myself.
I love these amps and there great for budget applications. However save a bit more and go for the Sabaj A30a 100wpc into 8ohms onboard dac and a bass low pass filter (no high) .. It sounds head and shoulders above these units, if you shop canny, you can pick one up for £425 . Its insanely good after 50 70hrs burn in . 90% out of the box .
Great and refreshing review..
Thanks for sharing!
Listened to the sound tests on my home theatre system and with my AirPods and the only thing I could pick up is maybe the Fosi has slightly more bass coming through? Other than that, they sound identical to my ears. Will you be getting in some of the mini amps with the optical and usb inputs and the subwoofer pre out? I see both Fosi and Aiyima have them.
I'm hoping to get the Nobsound B100 at some point, which has all these inputs.
Before you "experiment" with mono aiyimas...can you swear you can hear cross talk while listening to one of them in stereo?
Fun informative video mate, thanks!
Aiyima sounds lighter and more transparent!
LIKE number 1 which is always fun and all the waaaaaaaaaaaaaaaaaay from Canada. :)
Fosi a little bit more dynamic, but also a little bit grainier?
its a great dac amp combo regardless of the 'weakness' (really isnt, it is compared to higher priced units)
i wont tell the sounds since theyre also part of the 'present'
Have you considered testing SMSL SA400, it beats many so called esoteric brand at less than quarter of price.
fosi has a bit more bass punch
The difference is so insignificant that I can't even hear in whose favor.
Your bookshelf speakers?
All these lower cost amps, as good as they are, have one fatal flaw IMHO... their volume knob acts as the power switch.
They need a dedicated power switch so you can leave the volume set to your desired level. That would make them perfect for use as an extra amp for AVR systems that need two more channels amplified. Many are 11 channel capable, but only amplify 9, leaving you to provide an external amp for the last two (typically your AVR's rear height channels, like the Onkyo TX-RZ50). I plan to buy one and manually add a power switch.
BTW... peak/max power means nothing to me and is a miss-leading spec, these manufacturers need to supply true RMS power (continuous) which is way less than peak.
Leave it on
How about the volume dial on these two to push power both are at same level?
Yes 👍
@@UTILITARIANTVUK thanks, how does these two compares Marantz PM 6007? Or the new smsl ao300? Does this can drive better speakers since it's rated more watts per channel?
If I only knew if my A07 Pro is in the same league than the ones you have tested here...
I had both A07 Pro and Fosi V3. subjectivly, the last sound better. sound of A07 Pro seemed to me thin, so I sold it
This time I cannot tell if Fosi sound more like Aiyima or Aiyima sounds more like Fosi...
Actually they both sound like TPA3255 with block style output coils.
You use in Fosi 5532 Op amps?
How about the volume dial on these to push power both are at the same level?
Sorry but your Rotel gear deserves better spkrs than those polks
YIMA SOUNDS FLATTER MORE NATURAL
Is it me.....or the sound it's exactly the same!!!!
A07=V3 same sound quality
Fosi has a warmer and deeper sound, aiyima is drier. Have both of them.
Both begs for some hifi film capacitor bypass upgrade to uplift some sound quality.
@@wric01 I don't think so. They use quality capacitors. I open a secret to you, capacitors don't have differences in sound if they have similar capacities.
Change the op ams in any of them, and they will sou deven better 😂
fosi has much more dynamic in all frequency ranges, in the bass the fosi is more stable, the resonances in the bass are out of control with the aiyima. the mids are much more detailed with the fosi, the highs slightly more pronounced.
the channel separation is better at the fosi which gives you more room and depth.
the aiyima is more flat less dynamic overall. however, the frequency response seems to be pretty much the same and this is why people without good listening experience cannot hear the differences. there is no difference in 'color'.
but now the important shit: inthe fosi v3 you will find the cheapest opamp on the market, the ne5534. and multiple persons did tests either with better opamps like the ad797 etc. or with very nice discrete opamp replacements like from burson audio etc.
and these options give you even more dynamic and good control in the overall feedback loop of the amp. also again a tiny bit more channel separation.
however, if you want to have the ultimate channel separation, you upgrade to a dual mono setup and it is worth it.
thanks for the test. it helped me in making my decision what to buy.
ne 5534 никак не чувствует в схемотехнике обратной связи усилителя - это обычный преамп.
😊😊😊
Too much clowning around.
🤡
Acting like a clown seriously damages your credibility...plus it's just annoying...😖
It only annoys intensely boring people and aliens. Which one are you? 👽
@@UTILITARIANTVUK No need to be personal.....your target audience is not 8 years old......🙄
@@steven2809 not an alien then? 😄
@@UTILITARIANTVUK Grow up.....😖
@@steven2809 👍
สินค้าจีน คุณภาพ แบบตลาดนัดคลองถม ของไทยแลนด์
😂😂😅😅😊 chai karp
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