JM20 max & JM80E

[D4Countercy]

Hello guys
I am considering cheap Dongle from Jcally: jm20 max & jm80e. I wonder which one is better for durability & match with my Simgot ew200?

 

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JM20 MAX

 

[D4Countercy]

JM20 MAX

what sound signature does this jm20 max bring? Do you find it have power enough for KZ PRX? I read the specifications & it has same dac + amp as Fiio Ka11. Maybe it could be flashed firmware like Fiio Ja11 (jcally jm12)

 

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what sound signature does this jm20 max bring? Do you find it have power enough for KZ PRX? I read the specifications & it has same dac + amp as Fiio Ka11. Maybe it could be flashed firmware like Fiio Ja11 (jcally jm12)

Enough to meet your needs. KA11 is also a good thing but not as cheap as JM20 MAX in my country.
You can also take a look at JM20 Pro, which has a mobile APP that can adjust PEQ.

 

[wpzdm]

Enough to meet your needs. KA11 is also a good thing but not as cheap as JM20 MAX in my country.
You can also take a look at JM20 Pro, which has a mobile APP that can adjust PEQ.

How is the PEQ? Would you mind sharing the PEQ app UI?

 

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How is the PEQ? Would you mind sharing the PEQ app UI?

 

[wpzdm]

View attachment 423324

Thanks. Hmm, so seems only peak filters?

 

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Thanks. Hmm, so seems only peak filters?

I have already given feedback on this feature, maybe it will be solved later, not sure.
[email protected]

 

[D4Countercy]

Enough to meet your needs. KA11 is also a good thing but not as cheap as JM20 MAX in my country.
You can also take a look at JM20 Pro, which has a mobile APP that can adjust PEQ.

I read the specifications of Jm20 pro. it only 31.25mw 32ohm, pretty weak compared to jm20 max. They have the same price in my country, should I still go for jm20 max version? Do you find jm20 max hot (temperature ) as Fiio Ka11?

 

[CedarX]

I read the specifications of Jm20 pro. it only 31.25mw 32ohm, pretty weak compared to jm20 max. They have the same price in my country, should I still go for jm20 max version? Do you find jm20 max hot (temperature ) as Fiio Ka11?

See @staticV3 post here: https://audiosciencereview.com/foru...ed-to-cirrus-logic-cs43131.23138/post-2198650
The CS43131 can be tricked to deliver about twice that amount of power. That would apply to the JM20-Pro. After or when connecting the dongle to the USB host, you need to plug a "dumb" TRS cable to trick the CS43131 impedance auto-sensing measurement, then you unplug that cable and connect your IEM/HP.

That being said, 30mW is enough for a lot of IEMs, and quite a number of headphones, to reach unbearably loud levels...

 

[D4Countercy]

Xem bài đăng @staticV3 tại đây: https://audiosciencereview.com/foru...ed-to-cirrus-logic-cs43131.23138/post-2198650
Có thể đánh lừa CS43131 để cung cấp lượng điện gấp đôi. Điều đó áp dụng cho JM20-Pro. Sau hoặc khi kết nối dongle với máy chủ USB, bạn cần cắm một cáp TRS "ngu ngốc" để đánh lừa phép đo cảm biến trở kháng tự động của CS43131, sau đó bạn rút cáp đó ra và kết nối IEM/HP của bạn.

Tuy nhiên, 30mW là đủ để rất nhiều IEM và khá nhiều tai nghe đạt đến mức âm lượng lớn không thể chịu nổi...

how about jm80e, I never use any ESS chip, what sound signature this ESS CHIP on jm80e give you?

 

[CedarX]

how about jm80e, I never use any ESS chip, what sound signature this ESS CHIP on jm80e give you?

Sound signature? …it gives me a good, transparent, “signature” !!!

Apologies for joking a little bit.. But as long as the DAC/Amp is good enough—certainly the case for the ES9280 chip—there is no “sound signature”, except in our brain. Besides, the ES9280/81 are SoC, integrating the USB bridge, DAC, and Amp in one chip. So, the implementation is pretty much plain vanilla, consistent across OEM’s.

I should caveat this a little bit: the ES9281 is MQA-capable, so the ES9280/81 chips definitely have some processing/DSP capabilities. I have no evidence about JCally customizing the JM80E, but the more “feature-rich” the chips are, the more we may see DSP-based “custom sound signatures”.

 

[wpzdm]

Sound signature? …it gives me a good, transparent, “signature” !!!

Apologies for joking a little bit.. But as long as the DAC/Amp is good enough—certainly the case for the ES9280 chip—there is no “sound signature”, except in our brain. Besides, the ES9280/81 are SoC, integrating the USB bridge, DAC, and Amp in one chip. So, the implementation is pretty much plain vanilla, consistent across OEM’s.

I should caveat this a little bit: the ES9281 is MQA-capable, so the ES9280/81 chips definitely have some processing/DSP capabilities. I have no evidence about JCally customizing the JM80E, but the more “feature-rich” the chips are, the more we may see DSP-based “custom sound signatures”.

Are there any measured examples of DSP-based “custom sound signatures”?

 

[CedarX]

Are there any measured examples of DSP-based “custom sound signatures”?

Preset EQ's are obvious example of DSP-based "custom sound signature". Perhaps less obvious, but the Dynamic Range Compressor of the KTmicro chips (see FiiO JA11 thread) would be another example.
EDIT: the ESS DAC THD compensation feature used the other way around (to add H2/H3 harmonics) also falls into this category.

 

[wpzdm]

Preset EQ's are obvious example of DSP-based "custom sound signature". Perhaps less obvious, but the Dynamic Range Compressor of the KTmicro chips (see FiiO JA11 thread) would be another example.
EDIT: the ESS DAC THD compensation feature used the other way around (to add H2/H3 harmonics) also falls into this category.

I knew some IEMs have preset EQs built into DSP cables as part of their tunings.
But are there any DAP products with preset EQs?

 

[CedarX]

I knew some IEMs have preset EQs built into DSP cables as part of their tunings.
But are there any DAP products with preset EQs?

Yes there are, HyBy R1 example:

EDIT, Shanling M0S:

 

[wpzdm]

Yes there are, HyBy R1 example:
View attachment 427418

EDIT, Shanling M0S:
View attachment 427419

Ah, ye, I have Qudelix 5K and Fiio BTR17 which are also EQ-able, and I suppose, out of the box, the EQs are off for yours also? I would be surprised if some DAPs have EQ profiles on by default.