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Tube output really takes the 1387 DAC to a different level. Also the output capacitor and the IV resistor are critical in sound quality.

Do you just need the schematics? Or a complete review of how this is built?

Thanks for replying. It would be great to have the schematics first but best to have a step by step. Also could u show the underside of the PCB board... because I don't understand schematics I was hoping to understand/copy how you solder pt to pt 👍. What about selling the finished board less the 1387chip to me. Look forward to hearing from u

@@johnsnowlow1883 What is your email address? Mine is tmpchan@jethighintl.com. Which country are you in? If you don't mind this is only a prototype, you can have it at component cost.

@@thomasdiyaudio5353 hi Thomas just sent you an email thanks

@@thomasdiyaudio5353 hi Thomas, just sent an email to you. Thanks

Do you mean schematics?

@@thomasdiyaudio5353 i mean the link where you bought the preamp

Jheena Lodwick, The Musiclab Ltd.

I use the CS8412 board to connect to CD transport via coaxial. The sound quality is slightly better than Pi streamer. My Pi streamer setup is 1387 DAC connects directly to Pi via the 40 pin GPIO with FLAC files on USB thumb drive.

I am planning to build an upgrade version of this standalone DAC with better components in a proper chassis. At the moment, the vocal is better than my dual 9038 Pro DAC. String instruments sound more real. Entire presentation is more natural.

I’m currently sourcing the parts for the ProtoDac. The upgraded foil resistors for DC offset are tough to find in a 430 .

@@marcnomad9736 I am using AMRS resistors which is very good. If you are willing to pay more, you can try AMRG.

Output stage is OP627, others are 5534

try this, chief@poodlevillage.com

tmpchan@jethighintl.com

Triangle BR-02 speaker driven by Leach power amp. My DIY AX-2 is my reference speaker with 300B.

I used standard single side prototype board for point to point soldering. The circuit is very simple hence I didn't bother getting printed circuit board. The most important component is the output capacitor which pretty much decides the sound quality. I use GAD and if you can invest more, go for Mundorf Aluminium Oil or Miflex. I buy all my components on Taobao from mainland China. If you live outside of Asia, you get buy them from Aliexpress. For north America, partsconnexion.com sells high quality capacitors at very reasonable prices. Some are actually cheaper than Taobao. After you finish building this basic one, I highly recommend you to add tube output stage. I have a few videos on this. Tube output takes the DAC to a different level. Personally, I prefer the Lampizator output to the Audio Note one. Have fun!

Thanks for insights Thomas will speak with you on WeChat thanks again

Hi Thomas, would you please share about this diy DAC information or web site? Thank you so much!

@@shingwong2761 moodeaudio.org/ On the top right corner, there is an icon on this DIY DAC. Have fun.

Your email address? I'll email it to you.

@@thomasdiyaudio5353 Hi Thomas, I emailed you. Thanks!

What is your email address?

Hong Kong. Some of the projects I have done are also available in finished product on Taobao or AlieExpress by various suppliers. Have fun.

@@thomasdiyaudio5353 the tube dac in this video, can also find in Taobao? Can I buy ur design when you finish the PSU?Tube Dac is hard to find, most of them are too expensive.

@@hybirderic Where do you live?

@@thomasdiyaudio5353 北京

@@hybirderic thomaschan1010 my WeChan ID

Thank you for your input. This DIY is based on the original Audio Note AX Two produced in Denmark (early days when AN started selling speakers). Baffle position of the latest AN speakers is different.

Don't understand what you are asking.

I haven't tried 1794 yet so I don't know.

I don't have power amp or CD player with balanced interface hence I don't know how they will sound like. If you do go ahead with the full version (both balanced and RCA interface), please let me know your listening experience.

There is a power press button which I need to press in order to turn on the DAC.

@@thomasdiyaudio5353 Thanks a lot, friend!

DIY FM255 and FM711 mono blocks.

TTC5200, 10 pieces per channel. 20 pieces matched for 2 channels.

I bought it on Taobao in China and it is also available on AliExpress. THe brand is BRZHIFI and the model is SU10. Happy shopping!

Absolutely yes. The trick here is to find the drivers. ANK sells them but are rather expensive. It seems they are produced by Scan Speak but I have yet to find the model number. If you give me your email address, I can send you the schematics of the crossover and the dimensions of the speaker for AN-E. It's on my to do list.

I paid about US$200 for this. Inside there is a shielded power transformer with linear power supply (low cost major brand CD transport/players usually use switching power supply). One of the best deal I ever had.

Yes, I did. I bought the PCB on Taobao, then sourced all the components and put everything together. Very satisfying with the sound quality.

Yes, indeed. Classical example of how to apply theory in the real world.

Each of the preamp I have built (tube and solid state) is very good with its own sound signature. If you have to ask me, my personal preference of solid state is the Goldmund 27. It pairs well with solid state power amp and probably best with Goldmund (I do plan to build one when I got a chance). I am using the Goldmund 27 to drive my vintage 40 years old Leach power amp as my TV/video sound system which I use almost every day. If you want just vocal and simple classical music, then I would high recommend Audio Note all the way. Preamp, power amp and speaker. I have videos of these. Absolutely stunning. You can't find anything else with this musicality.

@@thomasdiyaudio5353 Good morning and thank you very much for your very kind and valuable response I know Audio Note and their great sound but they are out of my league Speaking of the Goldmund, I see that there are clones both to be assembled and already assembled Personally I was looking at some Accuphase clones of which I saw in a video very good measurements such as perfect square wave response from 20 to 20kHz. If I think that I hear 14kHz at most I'm studying the Goldmund carefully, the schematic of which I found online I see it has a first stage buffer - volume - output stage Few preamps have an input buffer which I think is beneficial Thanks again and best regards gino

@@gino3286 MBL6010 also has a buffer stage. I am considering to build one for my friend.

@@gino3286 By the way, Audio Note amplifier circuit design is very simple. Component count is rather low. It's the power supply a bit complicated.

@@thomasdiyaudio5353 Good morning and thanks again for your very kind help i have seen the MBL and my guess is that is very good indeed I only listen to CDs and files as final amplifiers i am quite satisfied my obsession is the line preamp It is very important for the overall sound I really like the sound of the tubes but it's the high voltages and high output impedance that worry me My power amps have even 5K of input impedance Very low As for the pre-amps design, I'm confused by the fact that some have only one transistor, others as many as 30 I would tend to be minimalist like Nelson Pass' bride of zen who uses just one mosfet per channel! but 7 times voltage gain is too high I prefer max 3 times voltage gain However, I am very fascinated by clones of famous preamplifiers such as the Goldmund and the Accuphase I don't know whether to throw myself into an already assembled clone I'm still studying Thanks again and best regards gino

Thank you.

In the video, I used DIY FM255 and FM711 to drive the AX Two. This was when I first finished building the speakers. Afterwards, I have been using my DIY Meishu Tonmeister 300B to drive the AX Two. This is now my reference setup for vocal.

If this is the case, I should apologize for my misunderstanding and mistake. Did you build any of his amplifier?

I'm thinking about building a lower power (50W) version of the Leach amplifier.@@thomasdiyaudio5353

AC32V x 2, 3A

32? O 36?

32@@sergiopaez5953

In my system, they sound very similar. Probably due to the same analog output design. The SU-10 AK4499EX sounds slightly brighter on the high end while the NXC02 is more all round, nothing stands out significantly while the sound quality is very good. This NXC02 costs me US$250 which is within range of the SU-10 with external linear power supply.

Yes, and they actually sound slightly better than the original one.

@@thomasdiyaudio5353 The Mundorf caps will make a big difference.

Yes, they do.@@ChicagoRob2

Thanks for pointing out.

they are far apart

​@@edwardcaseno .not enough distance. And where is the Problem

【淘宝】m.tb.cn/h.5sg4T4Ecqs2MA1s?tk=du3JW8tdup8 CZ0001 「DIY英国原装AUDIO NOTE MEI SHU AN300B单端合并后级PCB套板」 点击链接直接打开 或者 淘宝搜索直接打开

I only use coaxial and I haven't tried the optical input. Thanks for your feedback.

@@thomasdiyaudio5353 The DAC Brzhifi SU10 is full of beug, the seller is in very bad faith, you should not trust this brand

@@thomasdiyaudio5353 This brand is not serious, do not invest in this model, it is not serious, it is the first time that the 4499EX chip does not sound as it should, the engineers are bad.

So do i, i can't use the remote. And i can't find driver in english version

It is a brand that is not serious, several people buy brzhifi, but the engineers are zero and the brand will not last long I regret having bought the SU10. Attention ...

I also have a 9038Q2M board (just bare board, no chassis). Sound quality is OK but nothing like this 4499. I do plan to get a 9038Pro (probably dual chip) or something in that range in 2024.

@@thomasdiyaudio5353 wow nice upgrade for 2024 :) happy new year sir thomas!!

@@jericlee1509 Happy New Year.

Thank you.

100W @ 8 ohm

@@thomasdiyaudio5353 Thanks. I'm starting building my units based on Mr. Leach design. Best regards.

Gotham coaxial cable from CD transport to DAC. The white turntable is Project Debut Carbon Esprit. The B&W speaker is floorstanding and of course much better than Chartwell which is a bookshelf.

Подскажите, это ЦАП без апгрейда так звучит?

@@ДенисХуторной-ы4к The DAC in the video is original factory made. I did not do any upgrade on it.

Musicnote MU20 CD Transport, SU10 DAC with 12V linear power supply, Goldmund 27 DIY Preamp, FM711 DIY mono block power amp.

www.aliexpress.com/item/1005005705453232.html?spm=a2g0o.productlist.main.75.77482691k7dUXp&algo_pvid=0d99f52b-495e-4b86-b825-1e6e283b7055&algo_exp_id=0d99f52b-495e-4b86-b825-1e6e283b7055-37&pdp_npi=4%40dis%21HKD%211404.47%21912.91%21%21%211302.00%21%21%402103209b16995005892661028e270b%2112000034066887641%21sea%21HK%210%21AB&curPageLogUid=6PptL1Kuq0qL

I bought the 711 boards from Taobao in China from the original supplier. The above is the same product sold by a reseller.

www.aliexpress.com/item/1005003699944284.html?spm=a2g0o.productlist.main.59.77482691k7dUXp&algo_pvid=47d20538-3cbe-40a1-b059-1b705d901691&algo_exp_id=47d20538-3cbe-40a1-b059-1b705d901691-29&pdp_npi=4%40dis%21HKD%21445.53%21396.52%21%21%2157.00%21%21%402103205216995008242484346ee377%2112000026853788286%21sea%21HK%210%21AB&curPageLogUid=b71smZnV9wk8 (This is the original store I bought from)

Sorry I mean this is the original board I bought, the shop's name is different from the one I bought from in China.

www.aliexpress.com/item/1005004867339375.html?spm=a2g0o.productlist.main.41.6a1b2691453vDF&algo_pvid=c38ddb10-9fbf-4e3e-91f5-37f4efedcc49&algo_exp_id=c38ddb10-9fbf-4e3e-91f5-37f4efedcc49-20&pdp_npi=4%40dis%21HKD%212235.07%211586.9%21%21%212072.00%21%21%402101c80216995015581803466efaca%2112000030813023882%21sea%21HK%210%21AB&curPageLogUid=75GcgXJQ9Sto This looks similar to the 255 board I bought but there is no balance output in mine.

DA50 looks pretty much the same as the SU10 but with balance output. No idea if the chip is real or a clone while the sound quality is very good. At this price I have no complaint. Did you use linear power supply or just ordinary power adaptor?

I do not believe I have a 12v linear to use. I will have to source one. Appears all my stuff is switching based.

In my case, the linear power supply makes audible difference. Definitely worth it.@@camaross12

@@thomasdiyaudio5353 can you tell me the name of your limear PS , i intend to get one . thannks

@@tranphuocloc7837 www.aliexpress.us/item/3256805856657803.html?spm=a2g0o.detail.pcDetailTopMoreOtherSeller.6.4f5e2EOE2EOEBq&gps-id=pcDetailTopMoreOtherSeller&scm=1007.40050.354490.0&scm_id=1007.40050.354490.0&scm-url=1007.40050.354490.0&pvid=2900bb63-e164-4c11-93f2-d94a51940562&_t=gps-id:pcDetailTopMoreOtherSeller,scm-url:1007.40050.354490.0,pvid:2900bb63-e164-4c11-93f2-d94a51940562,tpp_buckets:668%232846%238114%231999&pdp_npi=4%40dis%21USD%2155.49%2138.84%21%21%21399.77%21279.84%21%402101fb1917113369513132280e714f%2112000035457588755%21rec%21US%21%21AB&utparam-url=scene%3ApcDetailTopMoreOtherSeller%7Cquery_from%3A

I bought directly in China and shipped to Hong Kong. My total cost including shipping was just under US$200.

@@thomasdiyaudio5353 Thank you!

I was looking I saw some for $300 Canadian weeks back. Depends on seller and timing the prices fluctuate.

This DAC is surprisingly good, especially with linear power supply. The power adaptor which comes with it is OK but there is audible improvement once I use linear power supply.