Edifier MR4BT Discussion – New Release, Now China Only

[findings]

Recently, Edifier released the MR4BT (last month). Currently it can only be bought in China.

It's an upgraded version of the MR4: woofer up to 4.5 inches, tweeter with waveguide, Bluetooth 6.0, and a slightly larger cabinet.

I bought it out of curiosity about the MR4 upgrade. However, I've only heard the MR3BT before, so I can't really give any meaningful purchase advice.

I don't have measurement equipment, so I truly hope Amir or other members here can measure it. Its price is 699 RMB. Considering Edifier products are usually more expensive overseas, I'd expect it to land around $150–250 USD.

Subjectively, the tuning sounds fairly balanced to me. Without measurements, I won't go into too much detail — it's just too subjective anyway.

A few photos below. It's a really good-looking speaker. I'd love to see detailed measurements. If needed, I could try mailing it to Amir, though I've never shipped internationally before.

Haha, that's all. Looking forward to any measurements or design discussions!

 

[findings]

I used AI to polish my English — this post is so much better than the weird expressions I used to write on my own haha

Also, the cable connection has finally been upgraded — the old design used bare metal wires with a clip‑on connector, and now it uses a detachable cable.

 

[Dsggolv77]

Interested in comparison with AIYIMA S4000. Compression driver, ad82178 (tweeter) + tpa3118 (woofer) amps, sub out, worldwide availability.

 

[komhst]

Also, the cable connection has finally been upgraded — the old design used bare metal wires with a clip‑on connector, and now it uses a detachable cable.

The real difference isn't that the previous model used bare metal wires with a clip-on connector, and now it uses a detachable cable. The real difference is that the previous model had one power amplifier per channel and a passive crossover (after the amplifier)—in other words, they were powered speakers. Whereas the current model uses two power amplifiers per channel, one for the tweeter and one for the woofer, with an active crossover (before the amplifiers). In other words, they are active speakers and not powered like the previous ones. This is what makes the difference in performance, not the cable. The cable is a necessary consequence of the active design. The presence of more power amplifiers also explains the increase in weight.

 

[waitl]

A large number of teardown photos for the MR4BT are now available. I grabbed these visuals from a randomly selected, manufacturer-sponsored review video. Their sales pitches all sound pretty much the same anyway. At least the footage gives us high-resolution shots of the actual PCB and silkscreen, which is far better than a manufacturer pointing to some mysterious chip with the markings laser-etched off while claiming it’s a proprietary high-tech marvel.

Here is a summary:

The circuit boards inside the speaker can be divided into three parts:

• An SMPS module shield with a black Mylar film
• A connector board
• main amplifier board

Sound-absorbing foam has been placed both inside the enclosure and along the connecting cables


These are the main chips on the amplifier's main board:

• JL7016C Bluetooth SOC
• PCM1861 ADC
• ACM8625S Class D Amplifier With Built-In-DSP
• Some OPA1678s used for single-ended-to-differential conversion

 

[Quinton595]

The real difference isn't that the previous model used bare metal wires with a clip-on connector, and now it uses a detachable cable. The real difference is that the previous model had one power amplifier per channel and a passive crossover (after the amplifier)—in other words, they were powered speakers. Whereas the current model uses two power amplifiers per channel, one for the tweeter and one for the woofer, with an active crossover (before the amplifiers). In other words, they are active speakers and not powered like the previous ones. This is what makes the difference in performance, not the cable. The cable is a necessary consequence of the active design. The presence of more power amplifiers also explains the increase in weight.

Thanks to your comment, I learned that powered and active speakers are not the same thing. Always thought they were just synonyms. Thanks!

 

[HomerIncognito]

They're launching in the US as MR4.5 for $249 (Pre-order 20%-off)

MR4.5 launching

Introducing M90, S880DB MKII, MR5, S1000 MKII. Shop speakers and headphones for home, desktop, and portable listening. Explore bundles and accessories.

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