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Aiyima A07 PRO
- Thread starter Scrufboy
- Start date
Thats horrible, I just ordered an 07 Pro, hope it lasts a little longer. Did you run it hard at least? Be nice if we could get similar amps but manufactured better. Id pay 3 times as much for one that is actually good. Japanese made or something
Roland68
Major Contributor
Such cheap products can of course break.
But one mustn't forget that an amplifier with this level of sound has previously cost 10 times as much in the hi-fi shop on the corner, and in the power class even 20 times as much, or more.
Two things would be much more interesting.
1. What is wrong with your amplifier?
2. How does the seller or Aiyima deal with it?
On the other hand, the Aiyima A07 is one of the best-selling amplifiers worldwide in the last 3 1/2 years and relatively few defective devices are known. At that time there were enough more expensive amplifiers where, after a few hundred devices and a shorter period of time, more problems and defects were known.
I am very sorry that this affected you, but I can assure you from my own experience that even the expensive and high-quality high-end products can break within the first year.
o man, that's terrible.
Did some more listening at max volume with the A07 Pro, with my 2 36V PSUs. After 20mins or so playing at max, the heatsink was uncomfortably hot, but i could still keep my hand on it without the urge to yank it away. This is using the amp with the case lifted at the back. Sorry, no actual temps. Can't find my multimeter with the temp probe.
Found not much difference between the 36V 6A unit from Aiyima, and a 36V 10A power brick from Amazon. In fact, my ears prefer the Aiyima 6A one. Good PSU.
Have found a 48V PSU on Aliexpress. Found 3 actually. First getting the one that already comes inside its own case. It has a GX16 DC connector on the case. Comes with a cable for that to plug into the amp, but will make my own. If that goes well then might want to desolder the power connector from the amp PCB and run a cable directly from the board to the PSU DC connector.
Easier than fitting the amp case with a GX16 or GX12.
Found not much difference between the 36V 6A unit from Aiyima, and a 36V 10A power brick from Amazon. In fact, my ears prefer the Aiyima 6A one. Good PSU.
Have found a 48V PSU on Aliexpress. Found 3 actually. First getting the one that already comes inside its own case. It has a GX16 DC connector on the case. Comes with a cable for that to plug into the amp, but will make my own. If that goes well then might want to desolder the power connector from the amp PCB and run a cable directly from the board to the PSU DC connector.
Easier than fitting the amp case with a GX16 or GX12.
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So... yes the Pro get hotter than the non Pro so take the cover off everytime is in use...and my final decision for op amp all dual to mono, at front 2 opa627 in the middle 2 opa2604 and at the back opa445bm ...surprise the opa1656 was not the winner in any position but is the best sounding in the non Pro 07 amp. I would said the most important are the 2 in the middle opa2604...2 opa627 in the front will improve about 8% and in the back 1 opa445bm will improve like 4%. I just get the opa1692 but I like better the opa2604 in the middle. I use the the Wiim Pro for tone control, the 07 Pro both controls at 12
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Holmz
Major Contributor
And did i ever mention what a nice amp this is?
Me, i quite like the AD827's in the A07 Pro after i got used to them. They do seem somehow all over the place, but everywhere preferable to the NE5532. Will be getting in some OPA1656 in a couple days i think. It's true tho; everyone likes the OPA2604 in this use. i should mebbe look around for some too. Later, after i get thru figuring out where to get capacitors where i live.
Me too, i leave alone the tone controls on the A07 Pro. Using my computer to provide the source, so have Equalizer APO in that and use its 1/3rd octave equalizer.
Me, i quite like the AD827's in the A07 Pro after i got used to them. They do seem somehow all over the place, but everywhere preferable to the NE5532. Will be getting in some OPA1656 in a couple days i think. It's true tho; everyone likes the OPA2604 in this use. i should mebbe look around for some too. Later, after i get thru figuring out where to get capacitors where i live.
Me too, i leave alone the tone controls on the A07 Pro. Using my computer to provide the source, so have Equalizer APO in that and use its 1/3rd octave equalizer.
Same with my SMSL C100. Lasted mebbe 5mins. Dunno how long this Topping E30 II i now have will last. It's a ##*@% to put back together after one opens it up. i'm still waiting for the proper tool to get here for reassembling it correctly. An extra long 2mm allen wrench. Has to be at least 110mm or so in shaft length and 2mm diameter all the way.
But i had to take a look inside.
Roland68
Major Contributor
I am using 48v 5a power supply, I will try 36v 5a and 24v 5a to see if sounds better for sure will be less heat...the non Pro get slightly hot even when is not in use, contrary to the Pro dead cool if is not in use.
Roland68
Major Contributor
The 24V power supply is very small, so the A07 (Pro) has less than 70 watts, at 8 ohms only 55 watts. At 36V 9-10A would be better, which allows even higher performance than 48/5A. If I understand correctly is the Pro cooler than the A07 when idling? And at about the same volume does the Pro get warmer than the A07? Then you should check the newly installed OPAmps or use the original ones and check whether the Pro still gets that warm during operation.
The OPA1656's got here. Plugged them in for 10mins or so-- a couple songs on an album. They're harsh as heck compared to the AD827's and i haven't the patience right now to 1) play them for a few days until they break in and settle down, then 2) compare them with the original NE5532, to see whether they're fake. So swapped the AD827's back in.
Initial impression is these aren't fake, or if they are they're pretty good quality op-amps underneath the printing.
It's likely i just don't want at this time to go thru the hassle of redoing the EQ on the speakers for these new parts.
Initial impression is these aren't fake, or if they are they're pretty good quality op-amps underneath the printing.
It's likely i just don't want at this time to go thru the hassle of redoing the EQ on the speakers for these new parts.
Have had the OPA1656's in for a bit less than a day and a half. Their sound improved a lot in the first couple hours, then a gradual improvement. i think they're not fakes.
It's a very detailed and undemonstrative sound, more neutral than i'd like, very good in the lower bass, which has musicality to it now rather than getting droney. Dynamics is quite good, and louder than the AD827's i had in there. 0db on the DAC is now way too loud for this room.
It sounds more like a Chinese amp than with the AD827's.
It's a very detailed and undemonstrative sound, more neutral than i'd like, very good in the lower bass, which has musicality to it now rather than getting droney. Dynamics is quite good, and louder than the AD827's i had in there. 0db on the DAC is now way too loud for this room.
It sounds more like a Chinese amp than with the AD827's.
OP
Scrufboy
Active Member
- Joined
- Dec 8, 2021
- Messages
- 193
- Likes
- 115
- Thread Starter
- #239
Since my last full post... I have had the A07 Pro in my main mini rig, running it daily, fully powered on 24/7 this entire time. It sounds amazing...
My chain is an Alienware X15 R1 Windows 11 laptop with ASIO drivers and Equalizer APO replacing the windows audio stack( apps and processes that control audio in windows) NO Adjustments - Amazon Music<Wireworld .6m Starlight 8 usb 3.1 C to C cable> Anker 575 USB C Docking Station <Wireworld .6m Starlight 8 USB 2.0 A to B cable> Aune X8 XVIII DAC with Sparkos SS3602 opamp - fixed line out <silver plated coaxial> Schiit Loki Mini+(here is where I use tone controls) <silver plated coaxial> Schiit Magni+ Heretic( preamp out - at 0db gain setting - where I control volume) <custom Mogami w2534 with Canare F-10 connectors> Aiyima A07 PRO with 5 Sparkos SS3602's and the other modifications Tone Controls at 12<custom Mogami W2947 Y cable with Canare Male F-12 TRS to 2 Canare F-10 Deluxe Clamp RCA connectors> Aiyima A3001 subwoofer amplifier
From the Aiyima A07 Pro - I run Custom 9' DIY Canare 4S11 Star Quad Speaker cables to a Set of LS50 Meta's
From the Aiyima A3001 - I run Custom Canare LV-61S coaxial subwoofer cable from Ghentaudio.com to an SVS SB-1000 Pro
My silver plated coax IC's are Chi-Fi from inntak audio on AliExpress
My custom mogami IC's are from performance audio.
The Noctua 120mm fan I have between my Topping mini racks does a fairly adequate job in pushing the heat through/out. Things could be better though and warmer weather is coming. Once I have the next set of cables arrive(I think they were stolen or mis-delivered ) I will disassemble the rig, move stuff around and either mount a 92mm silent fan to the top of the Pro chassis and/or I will put additional vent holes in the sides of the A07 Pro chassis.
My simple bedside setup today, built up over about 3 years, sounded really good with the A07. I was really pleased. It grew over time to become a somewhat decent setup I think. But when I moved the modified A07 Pro into its space...Everything opened up much, much more. I can turn the sub amp down a few notches too. The sound stage has much more depth. More punch, more liveliness - There is just more of the good that it had before. Thick, full, dynamic, clear, analytical, yet warm too. Very natural and analog. Like real sounding. It even made me want to open up the Schiit Magni+ and install SOIC to Dip8 adapters in all 7 op-amp locations. If I did this though.. I might as well just sell the Aune and the Magni and just buy a Burson DAC/HP Amp/Pre unit because that would cost about he same in the end.
As far as my op-amp choice - If you read up on what the SparkosLabs SS3602 does... How it does things differently... You might be curious enough to try it. I still want to try a Burson V6 Vivid in the mix though. I think it might be a winning combo when combined with the Sparkos.
I look forward to hearing from more of you in regards to this new PRO unit... Not a lot of people know about it yet. Some of the major YT personalities have yet to objectively dive in and give it an in depth review.
Thanks to everyone for their contributions, their understanding and their tolerance/forgiveness. I am humbled and I truly appreciate the time you've spent here alongside and along for the ride...
My chain is an Alienware X15 R1 Windows 11 laptop with ASIO drivers and Equalizer APO replacing the windows audio stack( apps and processes that control audio in windows) NO Adjustments - Amazon Music<Wireworld .6m Starlight 8 usb 3.1 C to C cable> Anker 575 USB C Docking Station <Wireworld .6m Starlight 8 USB 2.0 A to B cable> Aune X8 XVIII DAC with Sparkos SS3602 opamp - fixed line out <silver plated coaxial> Schiit Loki Mini+(here is where I use tone controls) <silver plated coaxial> Schiit Magni+ Heretic( preamp out - at 0db gain setting - where I control volume) <custom Mogami w2534 with Canare F-10 connectors> Aiyima A07 PRO with 5 Sparkos SS3602's and the other modifications Tone Controls at 12<custom Mogami W2947 Y cable with Canare Male F-12 TRS to 2 Canare F-10 Deluxe Clamp RCA connectors> Aiyima A3001 subwoofer amplifier
From the Aiyima A07 Pro - I run Custom 9' DIY Canare 4S11 Star Quad Speaker cables to a Set of LS50 Meta's
From the Aiyima A3001 - I run Custom Canare LV-61S coaxial subwoofer cable from Ghentaudio.com to an SVS SB-1000 Pro
My silver plated coax IC's are Chi-Fi from inntak audio on AliExpress
My custom mogami IC's are from performance audio.
The Noctua 120mm fan I have between my Topping mini racks does a fairly adequate job in pushing the heat through/out. Things could be better though and warmer weather is coming. Once I have the next set of cables arrive(I think they were stolen or mis-delivered ) I will disassemble the rig, move stuff around and either mount a 92mm silent fan to the top of the Pro chassis and/or I will put additional vent holes in the sides of the A07 Pro chassis.
My simple bedside setup today, built up over about 3 years, sounded really good with the A07. I was really pleased. It grew over time to become a somewhat decent setup I think. But when I moved the modified A07 Pro into its space...Everything opened up much, much more. I can turn the sub amp down a few notches too. The sound stage has much more depth. More punch, more liveliness - There is just more of the good that it had before. Thick, full, dynamic, clear, analytical, yet warm too. Very natural and analog. Like real sounding. It even made me want to open up the Schiit Magni+ and install SOIC to Dip8 adapters in all 7 op-amp locations. If I did this though.. I might as well just sell the Aune and the Magni and just buy a Burson DAC/HP Amp/Pre unit because that would cost about he same in the end.
As far as my op-amp choice - If you read up on what the SparkosLabs SS3602 does... How it does things differently... You might be curious enough to try it. I still want to try a Burson V6 Vivid in the mix though. I think it might be a winning combo when combined with the Sparkos.
I look forward to hearing from more of you in regards to this new PRO unit... Not a lot of people know about it yet. Some of the major YT personalities have yet to objectively dive in and give it an in depth review.
Thanks to everyone for their contributions, their understanding and their tolerance/forgiveness. I am humbled and I truly appreciate the time you've spent here alongside and along for the ride...
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Just hooked up my a07 pro. All I have at the moment for music etc is my old Samsung phone with bluetooth. my aux output is broken so I cant test it. The amp seems to sound really good but it has no power. its quiet. it only gets somewhat loud at 3 o clock on the volume dial. this is of course with my volume on the phone cranked. Im not sure the voltage its getting yet as I have to test it but im using two 20 volt batteries in series to power it. its strange because the little 50x50 watt amp powered off one of these batteries goes very loud. any ideas?
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