What customers say about Purist ROM

To show how our customers satisfied with Purist ROM upgrade, we’d like to share customers’ experience with Purist ROM. Feel free to read testimonials and use free Purist ROM version.

In the main while thank you once again, and all my compliments for the result you have achieved on the DX200. When it is used as player for my car (the 85% of its use), your upgrade were by far more “pleasant and effective” than all the work I’ve done changing the whole set of speakers and the car audio amplification system.

Alberto

Hi Keetakawee,

I have been doing a lot of intensive listening over the last few days and clearly your DX220 port on 1.04.150 is a masterpiece! I am in complete awe as I neverendingly marvel at the overall experience – the insane layering of both depth and width, the reverb effects, timbre and position accuracy of each and every performer on the stage, especially with live music – it’s bloody surreal! I cannot get enough and have been listening to album after album, one genre to the other – God knows how many times have I depleted and recharged the battery over the last five days 🙂 I could be forgiven for thinking this is one of those top-tier flagship DAPs! And I still haven’t gotten anywhere near enough – even as I am typing this email to you, heavenly sounding music is flowing through my ears! A huge THANKS again for this buddy – you certainly outdone yourself!

Best regards,
E.T.

E.T.

After 10 days more or less of listening after the upgrade to Advanced I only can say that its amazing how just “only” software mod can change SO DRAMATICALLY the overall sound experience, again, amazing. 2 case uses, both under Android, I need to taste Mango after the update but I can state that Android was improved so much that I’m shocked that this improvement could be done, really.

First setup, DX228 + Andromeda S, medium gain, volume 80, FLAC most of them 16 but some others 24 bits, no mp3

– Soundstage better
– Bass dramatically improved, not the typical bom bom but with more clear sub-bass
– Instrumentals with more separations. I started listening the Whiplash BSO and oh god, sometimes I closed my eyes and I thought that I was on the film shoot
– More vocals presence
– I noticed that the mids are maybe those who have benefited the least as a “bad” point

Second setup, DX228 + Fostex TH610, high gain, volume 120, FLAC most of them 16 but some others 24 bits, no mp3

– Soundstage has teleported me to the first row of the concert, amazing
– Bass on this headphones are very nice and I noticed a more “dry” bass and sub-bass not affecting the rest of the frequencies, right on, perfect
– Instrumentals again with more separations, very clear
– Highs and mids both improved, for sure, overall improvement

One absolutely amazing thing that I noticed is the battery, oh my gosh, the last testing was 2 hours of use and the stats went from 100% to 81%, really, this is freaking awesome.

In general for me its more than worth this solution, the free one its quite nice but of course that its very far away from the performance that the enhanced and above all, the advanced one.

PD: I’m not sponsored by Fidelizer nor they didn’t pay me anything for this review

iMongui

The effect of your “DX200 Advanced DX220-ported ROM” is simply gorgeous! The sound is really much clearer, the bass are much deeper and extended but very clean and alive, the mediums and voices are very life-like (details, feelings of the singer), the trebles are very precise, more transparent, sound natural, detailed, fast and “dynamic”. Overall, it is incredible. The stereo image seems really neat, wider, and even deeper; the instruments of all sorts are pretty well located. Also, the instruments sound “free”, like if each of them had its own space of the exact dimension it “needs” to sound natural, sort of free. But despite this, the instruments are not “stepping over” each other; amazing. (The quality of recording starts to be audible at this point, which makes sense.) Even during the most intense part of different types of musics, all sounds keep pretty distinct, not muddy. Impressive! The music goes from very low level to intense volume super-fast but “in an effortless way”. And all that, while I am using flac files only of CD quality. (I guess I will have to consider using higher quality files…) I then though about you, Keetakawee, and I do not know how long it took you to develop this know-how, but, gee!, do you know your business! For about 12% of the official price of the DX200, your Advanced ROM literally wakes up the potential of this DAP and seems to “multiplies” its performances. And I did not get any hardware mod. Yet. Henri P. (France.)

UPDATE After flashing PerfectDynamics 3.0:
Hi, Keetatawee,
Thank you very much for the update. I installed it on my DX200.
I was surprised by the difference! Deeper basses, trebles feel a bit more free but, above all, the sounds are much swifter and I feel a much better location of the instruments and with a “scene” that sound much bigger!!!
The former versions did not give such a big improvement ! I believe it is also because you implemented your PerfectDynamic 3.0 on the DX200!
Anyways, thanks to your new version, the new MangoPlayer under Android OS sounds gorgeous with your PerfectDynamic 3.0 implementation. Really IMPRESSIVE!

Henri P.

Hello again,

I did the switch ROMs test. 🙂 You are right, the advanced ROM is better!! I overall sound is more clear! I listened to a few songs in basic version and switched back to advanced. The difference was audible. I cannot understand why I was so disappointed in the first place.

The only I can think of is sound stage. I was impressed with basic’s sound stage. In advanced ROM I think it narrows the depth. Better Depth I hear with filter 5, My favorite. I also use no 2 No 7 is too stiff for My ears. Surely you have done a very good job Keetakawee!

Best Regards

Kyriakos Kontozoglou

I have only just started to listen to this modded AMP8,and it sounds surreal. I just wanted to listen few songs for testing, ended by using 2hours! This is something, glad I took a chance with this, well paid for!!!

‎Arijit Roy (DX220/AMP8)

Hello Keetakawee,

I don’t know what kind of magic you did to cook this ROM but I am now a believer. I got home an hour ago and I immediately flashed my rom to the Advanced – Purist ROM I bought for my DX120. I was blown away at how the sound has improved. I’ve been using an Ibasso IT01s with a 2.5mm balanced pure silver cable with my DX120. I thought the sound couldn’t get any better than that but it did, I am now a believer with the work you do. Keep it up! Hopefully more people will try your product. It’s definitely a purchase I am happy with. I can confidently say that me and my DX120 will spend a lot of years together. 🙂

Joenelle Audrie Caniza

Hello, since I wrote you my message this morning, I can say that my headphones do not leave my ears, the sound is really sublime, you did a lot of work, the detail in the instruments is amazing. I feel like I have another dap. And I rediscover my favorite albums with great pleasure. Bravo for your work.

Lavitiana Tsimiala (DX220/AMP1mk2)

I modified both device and Amp module (which has soft mute circuit bypassed for better sound than not to)

I can say that this one can go up all the way in the same level as SP1000cu/ss only that the house sound is not the same character.

SP1000 both version sound more edgy and meatier than my mod DX200 which makes vocal sound more like a real person in some recording but it make some song sound weird and SP1000 both version is better in layering in depth axis but not much better. Other than that, DX200 with Fidelizer Ultimate Mod is equal to both SP1000 and beat them in some category.

Modded DX200 has wider soundstage, more reference sound and also more musical than before modding. You’ll feel how the recordings were recorded for real! Something that was hidden when I use original DX200 was showed in great layering even the sound character will not render the sound layering more obvious like SP1000 do but you will be surprised by how it can be improved. Whispering sound in background of recording becoming more obvious to recognize without volume up. The echo of the vocal and instrument is more real.

I intended to do only Amp1 modification but when I hear DX200 with Fidelizer ultimate mod, I changed my mind. After I heard what the one that he by-passed the soft mute circuit, it sounded even better that I sent back my unit to do it too.

If you are good to go and have some effort to wait for it, I suggest you to send your unit for ultimate modification. But you can try only Amp module modification first to make sure that his stuff is real deal.

If you need a suggestion, try his paid firmware modification first. It’s cheaper way to hear the difference and you can always get the update when newer version fw is out.

For more information and the price, contact him directly. Hope this helps. 🙂

koluludome

Hi Keetakawee,
Just install it yesterday. Good job! it’s much much better with your optimized rom on top of already great sounding DX200. I find that the mango app sound more clean and focus compare to appolo app which sounded more meaty but focus is not as good as mango app.

I mainly use in car using the optical output and my car sound system never sounded this good before, ever.

it’s sure worth USD99 even though if could be cheaper as many consumer not as easy as me. I also bought your pc fiderlizer pro previously as well.

Mav

Mavwong

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What customers say about Purist ROM