Yes that new topping looks to be great value for money! However, it seems to be lacking any sort of bypass switch for the volume control. Maybe inside? It's not mentioned in the product specs though.Will wait for the new TOPPING MINI300 @118€
Measurements here :
TOPPING MINI300 Integrated Amplifier Black
The Topping Mini300 is a Class D stereo amplifier delivering 2x125 W into 4Ω in a fully balanced, high-efficiency design.www.audiophonics.fr
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AIYIMA A20 Stereo 2.1 Amplifier Review
- Thread starter amirm
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pickyAudiophile
Active Member
Thank you for bringing that one to our attention.
daniboun
Major Contributor
Seems you can't bypass the volume....
But some measurements update, you can see here a good PFFB implementation )
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ziggurcat
Addicted to Fun and Learning
Mono vs. Stereo.
I have to say that I am impressed by how competitive the new TOPPING MINI300 specs and measurements are for 118€, I might even get one for myself from audiophonics.fr as I am located in southern Europe. Thanks for pointing it out.Will wait for the new TOPPING MINI300 @118€
Measurements here :
TOPPING MINI300 Integrated Amplifier Black
The Topping Mini300 is a Class D stereo amplifier delivering 2x125 W into 4Ω in a fully balanced, high-efficiency design.
Mark185
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I have been measuring some small speakers with my A20 and compared response with and without the high pass filter. The change in low frequency roll off for small speakers that naturally roll off around 200 Hz is very slight looks to me like the Aiyima A20 high pass is only 6 dB per octave. Given that the speakers are already rolling off below 200 Hz I am not 100% confident in my estimate that the amplifier has a 6 dB/octave filter. Need to investigate more. If it is 6 dB, then that is just a simple capacitor/resistor network getting switched in and out.
The filter is audible and does improve the sound of very small speakers like the Cambridge MinX 22 but to be honest, I think I will want 12 dB/octave or better for my final solution. I am going to try a Dayton Audio DSP-408 I own and use the amp full range. Long story short, I am beginning to question just how useful the Aiyima high pass filter really is. I understand the DSP-408 costs more than the A20 but it does allow for much more complex crossover schemes and adds parametric EQ too.
If I was buying an amplifier today, I would choose the 3e Audio A7 or Fosi V3 mono dual set as both are on sale for Black Friday for around $239. Yes it is a fair bit more than the A20 sale price but these are better amplifiers and for me, the difference between ~$150 and ~$239 is not that much given the higher performance of the 3E and Fosi amps. I had hopes that the A20 would be in the same performance range as these two other models but it is not.
The filter is audible and does improve the sound of very small speakers like the Cambridge MinX 22 but to be honest, I think I will want 12 dB/octave or better for my final solution. I am going to try a Dayton Audio DSP-408 I own and use the amp full range. Long story short, I am beginning to question just how useful the Aiyima high pass filter really is. I understand the DSP-408 costs more than the A20 but it does allow for much more complex crossover schemes and adds parametric EQ too.
If I was buying an amplifier today, I would choose the 3e Audio A7 or Fosi V3 mono dual set as both are on sale for Black Friday for around $239. Yes it is a fair bit more than the A20 sale price but these are better amplifiers and for me, the difference between ~$150 and ~$239 is not that much given the higher performance of the 3E and Fosi amps. I had hopes that the A20 would be in the same performance range as these two other models but it is not.
Mark185
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Topping MINI300 specs are not that impressive. 140 wpc into 4 ohms at <10% distortion. 125 wpc into 4 ohms at 1% distortion. Its low noise and distortion spec is at 5 watts with 4 or 8 ohm load. The Aiyima A20 is superior by a wide margin at higher power output levels. If you listen at low levels around 5 watts per channel, then the Topping may be for you. I have expressed my doubts about the Aiyima A20 but comparing Amir's test data with Topping's published specs leads me to prefer the A20.
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I don't need much power, I am using 99db at 1w 8ohm speakers, the amp will almost always work in its distortion comfort zone.
But I will only eventually buy after I see a power versus distortion graph separated multiple frequencies like air measured for the A20, I haven't seen that yet.
daniboun
Major Contributor
You should wait for the ASR review about the Topping Mini. The 45khz bandwidth test will tell you more about this new amp.... The PA5 II is absolutely not linear at high frequencies. Checkout Amir's measurements )
Only if you only look at 1 kHz distortion. If you look at 15 kHz THD+N, two-tone or multitone IMD, the Pro is actually worse than the non-Pro. The Vibelink is a lot better than either the Amp or Amp Pro. The Ultra supposedly copied the feedback scheme from the Vibelink but adds PBTL.??? Wiim amp Pro / Ultra have quasi same performance. They do not have problem with PFFB
WiiM Amp Pro Streaming Stereo Amplifier Review
This is a review and detailed measurements of the WiiM Amp Pro networked streaming stereo class D amplifier. It was sent to me by the company and costs US $379. The package is minimalistic in nature and matches the "non-pro" version of the amplifier. The volume indicator is that set of LEDs...
I can't wait for Amir's or archimago's review of the Amp Ultra. Erin's review was flawed in that it used analog in, and the A/D in all Wiim products is just good enough for FM or tape in. There was a comparison test in the Wiim forum but that sorely lacked testing as described above.
daniboun
Major Contributor
You will find VS measurements between the Wiim amp pro and Wiim amp ultra into the Wiim Forum. Side by side : they perform the same.
Measurements and comparison of WiiM Amp Pro and WiiM Amp Ultra (and more :)
Hello all, Beware: This thread will contain a lot of measurements and technical analysis. Continue reading at your own risk! Introduction Until the end of last year I used a Denon Ceol RCD-N9 integrated stereo receiver/amplifier to power my living room system consisting of pair of Revel M16...
forum.wiimhome.com
pickyAudiophile
Active Member
I just gave it a shot, too. With voucher code applied and delivered from China it was possible to bring it just below my personal 100 Euros threshold for Topping Audio products.
Since all of them died, sooner or later.
Interesting to learn these guys at Audiophonics still list newly released Topping Audio products since quota of defective items must be simply outrageous. It's a matter of smart wholesale price negotiations I guess.
Since all of them died, sooner or later.
Interesting to learn these guys at Audiophonics still list newly released Topping Audio products since quota of defective items must be simply outrageous. It's a matter of smart wholesale price negotiations I guess.
The Mini 300? On Aliexpress or hifigo? At hifigo, it is about € 103 but you'd need to buy three to get the voucher to apply
pickyAudiophile
Active Member
Hifigo, NICEDAY$5 works worth USD 5.00 (or foreign currency converted respectively)
Yes, that is the thread I was referring to. On second look, the Ultra even looks worse in 1 kHz than the Pro, both when you look at 2nd, 3rd harmonics as well as THD and ENOB numbers.You will find VS measurements between the Wiim amp pro and Wiim amp ultra into the Wiim Forum. Side by side : they perform the same.
Measurements and comparison of WiiM Amp Pro and WiiM Amp Ultra (and more :)
Hello all, Beware: This thread will contain a lot of measurements and technical analysis. Continue reading at your own risk! Introduction Until the end of last year I used a Denon Ceol RCD-N9 integrated stereo receiver/amplifier to power my living room system consisting of pair of Revel M16...
You are also right in that the multitone looks very similar with the Ultra a tad better. On the other hand, Erin measured a pretty clean multitone even while using the seriously flawed analog input:
WiiM Amp Ultra Streaming Amplifier Review
WiiM Amp Ultra Streaming Amplifier Review
www.erinsaudiocorner.com
And it is definetely a "white" rather than a "pink" multitone he used. So these two IMD measurements cannot be reconciled - what is going on? Different versions of Amp Ultra? Is one of the measurements flawed? Or is the digital chain of the Ultra flawed?
daniboun
Major Contributor
I would rather talk about my personal experience in the end... If we consider the versatility of the Wiim Amp Pro / Ultra, playing with the PEQ, with Wiim Room and the optimized integration of a SUB, we have here a real Swiss Army knife amp capable of driving a good variety of speakers brilliantly.
I was able to get the best out of my AudioFirst Fidelia + SVS 1000 Pro Sub; the combination is perfectly balanced by finding the right settings.
This thread is about objective distortion performance of the Aiyima. Wiim was already a bit of a detour (mea culpa), but let's try to limit further digression. I have been running the Amp (non Pro) for a few days. I like the user interface (even if there are hiccups on the way from Amazon Music via Chromecast to Wiim), but I don't like the overall sound, so I will have to do measurements and also try using a DAC on the USB outout and better amplifiers to pinpoint the issue.
Mark185
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I mentioned earlier that I measured the frequency response of the Aiyima A20 driving a speaker with and without the high pass filter engaged. Here is a plot of the amp driving a CDT Audio wide band speaker pod over the range 20-300 Hz. The filter plot is green. This looks like a 6 dB/octave filter based on calculating the difference between the two plots.
staticV3
Grand Contributor
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FYI, you can actually plot the difference using "Arithmetic"-> "A/B"
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