More details on TRN website: https://trn-audio.com/trn-black-pearl.html
This appears to be another variant of a TTGK module: CB5100pro bridge/DSP, dual CS43131, 8x PEQ through WalkPlay app.
But $37 is certainly not bad if one is OK with the size.
More details on TRN website: https://trn-audio.com/trn-black-pearl.html
Just ordered one from Linsoul make more cheap 26.2£ i use JM28 and JM20 Max look good think to use with my speakers Edifier M60 and Kiwi Ellipse they so good be wait and see i like so much my sound with use DTS X headphones for senheiser 650 on ellipse with JM20 MaxMore details on TRN website: https://trn-audio.com/trn-black-pearl.html
This appears to be another variant of a TTGK module: CB5100pro bridge/DSP, dual CS43131, 8x PEQ through WalkPlay app.
But $37 is certainly not bad if one is OK with the size.
So you ordered the TRN Black Pearl?Just ordered one from Linsoul make more cheap 26.2£ i use JM28 and JM20 Max look good think to use with my speakers Edifier M60 and Kiwi Ellipse they so good be wait and see i like so much my sound with use DTS X headphones for senheiser 650 on ellipse with JM20 Max
never be ordered from Linsoul no idea how long be take delivery yes be see when received anyway i see they have on amazon aswell TRN Black Pearl some brand LEAUDIO listing him for 36.99£ 25 april to 3 may delivery maybe mine same be take around May no idea look interesting with 2 chips and to my pc is not be good for phone think too big most like mine JM28 and JM20 Max i found sound like more on JM28 than JM20 Max no idea why and same less battery draw JM28 i use Google Pixel 8a be check that first like this amp i ordering after long time last big like this be Hilidac Audirect Beam 2S cost me alot in 2019 136£ be let knowSo you ordered the TRN Black Pearl?
When it comes can you quickly check how many volume steps it has and if the pc operative system volume slider actually changes volume or not?
Thank you in advance![]()
Please use a bit of punctuation, your sentence are hard to understand.never be ordered from Linsoul no idea how long be take delivery yes be see when received anyway i see they have on amazon aswell TRN Black Pearl some brand LEAUDIO listing him for 36.99£ 25 april to 3 may delivery maybe mine same be take around May no idea look interesting with 2 chips and to my pc is not be good for phone think too big most like mine JM28 and JM20 Max i found sound like more on JM28 than JM20 Max no idea why and same less battery draw JM28 i use Google Pixel 8a be check that first like this amp i ordering after long time last big like this be Hilidac Audirect Beam 2S cost me alot in 2019 136£ be let know
yep when arrives be let you knowPlease use a bit of punctuation, your sentence are hard to understand.
I'll be glad if you could answer to my asking when the Black Pearl arrives.
Thank you.
is so good killed my jcally M20 Max u can see video is 90 steps volume control so loud and clear sound a bit surprised so quality is just uploaded now this on low volume to not annoyed neighbours because the Edifier M60 is so loudSo you ordered the TRN Black Pearl?
When it comes can you quickly check how many volume steps it has and if the pc operative system volume slider actually changes volume or not?
Thank you in advance![]()
Thank you for reporting back on this, so OS volume slider is working, very nice. As for the volume steps, I was referring to the hardware volume button the device, keeping the OS volume at max, how many clicks it takes to go from min to max. Ad an example, my Sonata BHD takes 30 steps.is so good killed my jcally M20 Max u can see video is 90 steps volume control so loud and clear sound a bit surprised so quality is just uploaded now this on low volume to not annoyed neighbours because the Edifier M60 is so loud
Does both JM20-Max and Black Pearl support Walk Play?TRN Black Pearl is great is much better not like my Jcally M20 Max who make hot and can confirm work with walkplay app and u can change DACS to class AB or H, Low or High gain make screenshot is great DAC so happy and many filters and EQ for 26£ 7days delivery take to Linsoul to delivered to me View attachment 447801View attachment 447802View attachment 447803
The JM20 and JM20-Max do not (Savitech USB bridge I believe), the JM20-Pro and Black Pearl (see above) are WalkPlay-enabled (CBHT-Audio / SpaceTouch USB bridge + DSP).Does both JM20-Max and Black Pearl support Walk Play?
i wonder if the gain switch function would be useful to people suffering with ear-murdering pops with sensitive IEMs.
To be honest sticking to 1V remains the default choice for avoiding both of those issue when driving sensitive IEMs. No configuration needed-it just works. The great thing is that there is a large selection of both 1V and 2V dongles for near the same price so one could choose either based on need, or buy one of each types for little money.The JM20 and JM20-Max do not (Savitech USB bridge I believe), the JM20-Pro and Black Pearl (see above) are WalkPlay-enabled (CBHT-Audio / SpaceTouch USB bridge + DSP).
The gain switch is always nice-to-have. I was thinking more about hissing issue, but good point on 'pops' issues. For example, each time I change a PEQ parameter on my JM20-Pro, there is a mild, but annoying, click/pop on the IEMs I use (not particularly sensitive).
To confirm that. Could you play Beats test file from my #304 post, record it and show Spectrogram with Audacity with magnification of timeline like on my screenshot, Just L channel is sufficient. You can magnify to have like 7 beats 3 from area with additional signal and 4 from are with just beats (it is in the middle of Beats file) - make it like my screenshots for easier comparison. My test DAC with 2xCS43198 + Amp (not SGM but it does not matter) shows gradient stripped pattern of the noise floor.
The whole story with CS chip is not about inability of developer reading specs it is about DAC chip which shows nasty noise pattern which to my opinion is not about Class H behavior but a workaround for the low frequency of CS DAC chip (ESS and AKM chips operate at 2x higher frequency) and too close noise from the noise shaper which is lowered by the chip's RMS method (which is causing high-frequency distortion if gain is raised rapidly) - thus we see gradient-like noise image on Spectrogram with beats only and light lines (high frequency distortion, I showed it on waveform) for every beat.
We can continue with this in dedicated CS thread as proposed by @mc.god, please poke me when you got measurement done.
Uhm, never mind... lol, I didn't listen to the recording before, now I heard it is heavily clipped and found out that the input jack of my laptop only works as a mic input, so the recording is not significative...@dmitrykos
I'm continiung here the discussion from the other thread.
I tried what you asked with my Sonata BHD (3.5 output, high gain, hardware volume at max), recording through the crappy onboard audio of my old laptop, I set audacity to record at 24 bit 192 KHz, this is the spectrogram of the recorded file (L channel only), but honestly I think there is something wrong with my setup since it is much different from what you posted
View attachment 448214
please give me further instructions on how to fully replicate the test. If the issue is the bad quality of ADC then I cannot help at the moment.
Thank you![]()






There is also a webapp: https://peq.szwalkplay.com. You still have to login to use it, but this could be an alternative to the apk.Don't fully trust a random chinese .apk though, but not much to do if I want that PEQ, but at least I registered with a temp mail.
Ah there's a web app that can access the dongle? Does that work on the computer as well? Tough I did forget what tempmail I used so I can't log in with that anymoreThere is also a webapp: https://peq.szwalkplay.com. You still have to login to use it, but this could be an alternative to the apk.