Loxjie A40 all in one amp 2024

[dpuopolo]

I'm posting pictures because no one is posting anything about the A40.
View attachment 335628View attachment 335629View attachment 335630View attachment 335631View attachment 335632View attachment 335633

The cool thing about this unit is it uses a bipolar (+/-) power supply so the output is NOT BTL. That means one side of each channels' output is referenced to ground, and only ONE output filter per channel is used (You can see there are only two output chokes on the circuit board). This means that the load interaction should be HALF THAT of BTL output amplifiers like those using the TI amp chips.

 

[dpuopolo]

Same delay problem sometimes with A40 as well - I confirm!

Go to the Loxjie site and UPDATE YOUR USB DRIVERS!!

 

[dpuopolo]

Mine's coming from Ali Express. $215.72 shipped to the USA. This unit looks to be a game changer.

 

[NTK]

The cool thing about this unit is it uses a bipolar (+/-) power supply so the output is NOT BTL. That means one side of each channels' output is referenced to ground, and only ONE output filter per channel is used (You can see there are only two output chokes on the circuit board). This means that the load interaction should be HALF THAT of BTL output amplifiers like those using the TI amp chips.

It doesn't look better from the Infineon datasheet.
This is the SE frequency response.

This is the BTL frequency response.

 

[voodooless]

It doesn't look better from the Infineon datasheet.
This is the SE frequency response.

View attachment 359100

This is the BTL frequency response.

View attachment 359101

That makes sense, in a BTL amp, each amp will see half the impedance, so an SE 4R will behave roughly the same as BTL at 8R.

Bipolar and BTL are not mutually exclusive BTW, just check the datasheet. All kinds of combinations are possible.

 

[dpuopolo]

Huh? The single ended looks FAR better, especially at 4 ohms. It's down under a DB at 20 kHz in SE, and down 4 DB with BTL.

It doesn't look better from the Infineon datasheet.
This is the SE frequency response.

View attachment 359100

This is the BTL frequency response.

View attachment 359101

 

[the1Dude]

Hi all,
I am also thinking about buying my first class D amp.
So far, the A40 checks all my boxes:
Bluetooth, HDMI, phono stage, remote control.

Did anybody test the built-in phone stage, and what can I expect?
Don't need a high-end solution here, I listen to vinyl maybe once a month, most of the time I stream via Spotify.
Currently, I use a low-end Art Pro Audio DJPRE II, and I am completely happy with it.
Would love to have an all-in-one solution to increase the Wife Acceptance Factor in our living room.

@treehugga: In your post you used a dedicated phono stage. Was the built-in one so bad or do you just have high standards?

Any information is very welcome.

 

[treehugga]

Hi all,
I am also thinking about buying my first class D amp.
So far, the A40 checks all my boxes:
Bluetooth, HDMI, phono stage, remote control.

Did anybody test the built-in phone stage, and what can I expect?
Don't need a high-end solution here, I listen to vinyl maybe once a month, most of the time I stream via Spotify.
Currently, I use a low-end Art Pro Audio DJPRE II, and I am completely happy with it.
Would love to have an all-in-one solution to increase the Wife Acceptance Factor in our living room.

@treehugga: In your post you used a dedicated phono stage. Was the built-in one so bad or do you just have high standards?

Any information is very welcome.

The A40's onboard phono stage was pipped by my £300 Project tube box s2, which is a well regarded unit.
The A40's phono stage is accomplished and certainly no slouch. When taken as a whole for the price, it's an absolute steal.
I also find the bluetooth via LDAC from my android phone to be the best I've heard in my system. If I didn't require a thumb drive and volumio, I'd seriously consider ditching my streamer.
Buy with confidence.

 

[dpuopolo]

Hi all,
I am also thinking about buying my first class D amp.
So far, the A40 checks all my boxes:
Bluetooth, HDMI, phono stage, remote control.

Did anybody test the built-in phone stage, and what can I expect?
Don't need a high-end solution here, I listen to vinyl maybe once a month, most of the time I stream via Spotify.
Currently, I use a low-end Art Pro Audio DJPRE II, and I am completely happy with it.
Would love to have an all-in-one solution to increase the Wife Acceptance Factor in our living room.

@treehugga: In your post you used a dedicated phono stage. Was the built-in one so bad or do you just have high standards?

Any information is very welcome.

For $216 shipped from Ali Express (find the 20% discount) it's an absolute no brainier.

 

[Kegemusha]

They are back in stock on hifi express. at 215€ for Europe.
At this price it's a blind go.

Have you order from HiFi Express to EU?

 

[munin]

Have you order from HiFi Express to EU?

No... I was to hurry and ordered form Amazon 50€ more.But even I could have pay less for it, I don't feel I got scamed. Even for 265€ it's still a bargain.

 

[treehugga]

No... I was to hurry and ordered form Amazon 50€ more.But even I could have pay less for it, I don't feel I got scamed. Even for 265€ it's still a bargain.

The amp alone is worth the asking price, everything else is a freebie.

 

[Bleib]

Have you order from HiFi Express to EU?

I have a few times without problems..no extra charges or anything to Sweden

 

[Kegemusha]

I have a few times without problems..no extra charges or anything to Sweden

The thing is that they say "Shipped from EU" and that is not true, the device is shipped from China anyways.

 

[Bleib]

The thing is that they say "Shipped from EU" and that is not true, the device is shipped from china anyways.

Yeah, this is simply dishonest, a way of making people think it's gonna come faster and possible greener

 

[dpuopolo]

Mine came today. They appear to ship them by the pallet to the USA from China and they are mailed from there to the purchaser. Installing it tonight.

 

[cce32]

I ordered one from hifi-express on March 25th and it arrived today, no drama, total of $225.00. I couldn't find a way to get AlliExpress to ship to California.
Initial listening impressions are it sounds fantastic using optical in from a WiiM streamer to my Ascend Acoustics towers.

 

[dpuopolo]

Mine went in tonight. I'm using Emotiva B1+ speakers and a Monoprice 12" powered subwoofer. Initial reactions are very positive. I've tried it with Bluetooth and am running my WiiM pro into it coaxially and my TV optically (Will do HDMI ARC tomorrow). The sound is incredibly clear. The song "Rainbow connection" by The Carpenters sounded so good I literally felt like crying. I believe a day or two of warmup will make it sound even better.

 

[munin]

I believe a day or two of warmup will make it sound even better.

Huh? How?

 

[dpuopolo]

Because it's a first use. Electrolytic capacitors need to form.