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TOPPING MX3s

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JSmith

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Guddu

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Quite an All-in-One unit, may be intended for desktop use but Too low power specs may be !!!
Something similar with 2 x MA12070 or TPA3250/3255 could be amazing!
 
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CedarX

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Besides the unknown AKM chip (AK4493S like the DX1?), the description mentions a Qualcomm QCC3040 for BT (obviously), but also USB, optical, and coax input…??? Do I read that wrong or there is no Xmos chip? The QCC3040 is a fairly powerful chip with one Kalimba DSP unit. I wonder if they used a DSP LPF with the integrated DAC to provide the SW output…

EDIT: also noted that the SNR and Dynamic Range of the HPA are spec’s at 115dB for USB/Opt/Coax vs. a much better 127dB for the Aux input. Either this is a low-end AKM DAC, or the QCC3040 is the limiting factor (similar story on the Qudelix 5K used as DAC). Not that it matters at these levels anyway!!!

EDIT2: the QCC3040 integrated DAC is 1-channel only, which would work for the Sub Woofer out, but only for USB/Opt/Coax input…. Aux input would require using the QCC3040 integrated ADCs (intended for mics) to get digital L & R, then sum it & apply a LPF in the DSP, and convert it to analog SW out through the DAC. Latency should not be too much of an issue for a sub… Seems rather complicated to implement!

If Topping is moving toward using Qualcomm instead of Xmos for the digital inputs, I wish we’ll finally see more DSP options in their future entry level products—alike what Qudelix has done with the 5K and it’s app. A DX3S (MX3S without the amp.) with some EQ options would be interesting if less than $150 !
 
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CedarX

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Not sure if there is such thing as an AK4437 DAC…
 

Power Pop 23

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Not sure if there is such thing as an AK4437 DAC…
Agreed - I see mention of a '4436VN' and '4438VN from AKM

 

CedarX

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Found one post (in Japanese) mentioning an “AK4437” produced at Renesas after the AKM fire. Headfonics also lists it in their iKKo Heimdallr review, but iKKo shows it as a AK4377. May be a typo… or an existing “classic” AKM DAC produced at a different factory.
 

PatentLawyer

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I think it is the AK4377, as this looks like Topping ad copy:

 

ampguy

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Waiting on reviews for this. I have a small desk setup where this could work well to save up some space. Currently have a Schiit Sys preamp for allowing switch between computer and Roon (Chromecast streamer here), into a Sabaj a10h hp amp, then into a TPA3116 amp for powering the desktop single Fostex driver Kanspeas on the desk. I realize there are existing decent all in ones like the dx3pro+ but I think in either case, I have to find a way to support 2 analog inputs, or get one of those mini Toslink cables for the Chromecast.
 

fuzzy_logic

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I quite liked the original Mx3, but then i added a subwoofer to my setup, and they didn't get on. A loud thunk from the sub, when the amp was powered off, and then it shut itself down after i connected my headphones (which was fine before i added the sub). I saw similar reports from other users elsewhere - I hope they've fixed it with the new version!
 

RangerAudio

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Thinking about buying this, but seems the og MX3 wasn't a great unit. Anyone know the measurements of this?
 

Hatto

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Thinking about buying this, but seems the og MX3 wasn't a great unit. Anyone know the measurements of this?
Topping released their measurements but there are no independent measurements out that I know of yet.
 

SuicideSquid

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I've got a decade-old Topping VX1 and have been waiting for them to produce a suitable replacement. Perhaps this will be it.
 

RangerAudio

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Topping released their measurements but there are no independent measurements out that I know of yet.
Much appreciated. I think I might just go with a Topping DX3 Pro+ for now instead. I don't really need a powered speaker output, but it would be a nice feature. It has a lot of potential.
 

Hatto

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Much appreciated. I think I might just go with a Topping DX3 Pro+ for now instead. I don't really need a powered speaker output, but it would be a nice feature. It has a lot of potential.
DX3 Pro+ is a more versatile product in my opinion. It can be used as pure DAC, pre-amp and headphone amp, whereas MX3s is an AIO stereo amp with an afterthought headphone stage. While both offer great capability with small footprint, DX3 Pro+ has top of the line DAC and HPA performance. It all depends on your listening habits prioritization:
Listening to headphones often >>> DX3 Pro+
Active speakers >>> DX3 Pro+
Need analog outputs >>> DX3 Pro+
Need analog inputs >>> MX3s
Passive Speakers >>> MX3s
You already have a DX3 Pro+ and just need a matching stereo amp >>> PA3S ($126: https://www.amazon.com/dp/B09LCTYHKQ)
 

Matias

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Thinking about buying this, but seems the og MX3 wasn't a great unit. Anyone know the measurements of this?
SINAD 93 and about 58W into 4 ohms (THD+N 1%). Looks like a great all in one!


Topping released their measurements but there are no independent measurements out that I know of yet.
Their published measurements, made in APx555b, have been reliable so far.
 
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