Gabster
Gabster
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Protodac sound Comparison and how to add a Fifo Q7 / PurePi from IanCanada
I compare the sound of a barebone Protodac vs one with a FifoQ7 and PurePi vs a D6 Dac with a ES9038Q2M Dual Mono II DAC HAT and a OPA861 IV Board by IanCanada
Corrections:
13:16 Video should say WS DATA BCK
if connecting on the Resistor end, like in the video the Correct order is WS DATA BCK as resistors are crosslinked not as per schematic.
If you are connecting on the Chip end then the order as per video is correct
Connections on TDA1387 on the chip 1 - WS / 2 - BCK / 3 - DAT
On the resistors output it is 1- WS / 2 - DATA / 3 - BCK
Support me by joining my Patreon : www.patreon.com/user?u=86208088
Parts used :
IFI 5v Power supply: amzn.to/3PS8bOR
U.FL Female cable cut one end and solder: amzn.to/3Uvedrb
The above links are affiliate links please help the channel by using them
The links below are Not affiliate links
Protodac On Moode Site, click the Protodac Tab : moodeaudio.org
IanCanada Dac parts like FifoQ7, Dual mono Dac, PurePi...
iancanada.ca/
Protodac Video and how to build it :
czcams.com/video/zOHt10p7bX0/video.htmlsi=URcJrlI5c6kOOZf7
My D6 Dac Video based on IanCanada parts:
czcams.com/video/EPV1ON23L0Y/video.htmlsi=sYCKQnPUClJhEmjw
zhlédnutí: 3 622

Video

Ultra / SuperCapacitors Power supply with Triggers and timer. Step by step
zhlédnutí 2,5KPřed měsícem
3 Transformers to supply 6 x AC lines for UcPure boards or LinearPi by IanCanada or other PSU needs. Built in Trigger In ,Trigger Out, Trigger Momentary, and Timer to auto shutoff after a period of time if desired. Support me by joining my Patreon : www.patreon.com/user?u=86208088 Main parts used Flip Flop Circuit : amzn.to/3Y4gCba Optocouplers Relays: amzn.to/3HlC6tn Timer: amzn.to/3Yc6zkn Snu...
Speaker surround Repair
zhlédnutí 1,4KPřed měsícem
Repairing Speakers surrounds can be very easy. IMF ALS 40 Speaker repair will go step by step on how to do it from a simple DIY perspective. Support me by joining my Patreon : www.patreon.com/user?u=86208088 Adhesive used was inexpensive and good had a good working time and most importantly allowed for minor adj after positioning: US Link: amzn.to/3w2eAA8 CA EU link: amzn.to/4b3Md3j Precision T...
Michel's Dac Streamer. Subscriber DIY build
zhlédnutí 4KPřed měsícem
From an early age, audio has always been my interest, since 2005 I became ill and was forced to stop working, always worked with robotics/PLC machines and programming them, many products made for BMW, Saab, Rank Xerox etc, also optimization, machine park maintenance, planning, but unfortunately I had to stop that. Later, when I had recovered reasonably well, I had to find something to do and ca...
Best power supply for clocks and DACs to improve the sound quality.
zhlédnutí 3,6KPřed měsícem
UcPure Quad by Ian Canada 1. Two 3000F ultracapacitor groups in parallel, reducing the output ESR to the next lower level which has never been reached before. Noise was also reduced by 1/sqrt(2) in principle. 2. New dual PCB architecture to completely eliminate the wires between UcPure and ultracapacitors, thus significantly improving the performance. Because the resistance of the wires can be ...
Best Linear Power Supply by IanCanada
zhlédnutí 12KPřed 2 měsíci
Linear power supply for DACs and streamers and most electronic projects. using cutting-edge ultra capacitors and IanCanada. Please use layers of safety to help you reduce any harmful situations and follow all safety standards. Support me by joining my Patreon : www.patreon.com/user?u=86208088 The following Links are affiliate links "Disclosure: As an E-Bay and Amazon Associate, I earn a small a...
10 Great HIFI Songs
zhlédnutí 5KPřed 2 měsíci
Discover meticulously crafted songs that enhance and assess your audiophile setup. These tracks feature rich bass, crisp vocals, vibrant high frequencies, immersive imaging, precise attack and decay, and dynamic range. Listen closely for these qualities as you enjoy the music. Share this video and let us know your favorite lesser-known, yet excellently recorded song in the comments below! One o...
Pure 15v Power. Mini setup using UCPure by IanCanada
zhlédnutí 3,2KPřed 2 měsíci
Building a "Mini" 15v pure power supply for Preamps OpAmps, DACs and streamers using cutting-edge ultra capacitors and Ian Canada UCPure to charge it. Warning Ultracapacitors can be dangerous. Do your own research and buil according to safe standards. Use Quality components with good safety ratings. I explore some layers of safety to help you understand and reduce harmful situation. Chapters: 0...
Best 3.3v Power Supply
zhlédnutí 2,5KPřed 2 měsíci
Building the ultimate power supply for DACs and streamers using cutting-edge ultra capacitors and Ian Canada UC Balancer and UCPure to charge it. Warning Ultracapacitors can be dangerous. Chapters: 00:00 intro 20:30 Subscriber build of this Video by Nick Headphone Amp Iancanada site: iancanada.ca For a detailed build video see: World's Best Power Supply UcPure by Ian Canada 5v 0 -5V Detailed Bu...
Alternatives to very large ultracapacitors. And how they work
zhlédnutí 3,3KPřed 2 měsíci
In this Video I show how a prototype of a smaller 5v 0 -5V and how long 600F Ultra Capacitors can last. This is a real world example showing how 1 min charge powers a preamp for over 1h and a half or longer. Intro 0:00 Subscriber Sheldon’s build 14:44 Support me by joining my Patreon : www.patreon.com/user?u=86208088 The following Links are affiliate links "Disclosure: As an E-Bay and Amazon As...
World's Best Power Supply UcPure by Ian Canada +5v 0 -5V Detailed Build
zhlédnutí 19KPřed 2 měsíci
Building the ultimate power supply for DACs and streamers using cutting-edge ultra capacitors and Ian Canada UC Balancer and UCPure to charge it. Warning Ultracapacitors can be dangerous so we explore some layers of safety to help you understand and reduce harmful situation. Chapters: 00:00 intro 10:20 Extremely important things to know about the ultra Capacitors 14:48 Short Version build 21:27...
Douk Audio Nobsound Ampapa A1 phono/Line Tube Preamplifier with Headphone output.
zhlédnutí 2,7KPřed 3 měsíci
Ampapa A1 phono/Line tube preamplifier with tone controls and a Headphone and RCA output.
Flagship DIY DAC by IanCanada. USB I2S Coax. No RPI
zhlédnutí 18KPřed 3 měsíci
Follow along as we build the Flagship Full function SYNC Clock mode ES9038Q2M Dual Mono II DAC by IanCanada from start to finish! This comprehensive guide takes you through each step of the assembly process. Time Codes 0:00 -Intro 4:28 Short fast version of the build 6:39 Long detailed version 32:28 Subscriber's Build 35:22 Other projects in progress To share your project on my Chanel. Email me...
Measure Tube Amp Bias Easily with Douk Audio CT1-Box
zhlédnutí 1,5KPřed 3 měsíci
In this comprehensive tutorial, I demonstrate a straightforward method for measuring the bias of tube amplifiers using the Douk Audio CT-1 Box. CT-1 Box Link amzn.to/3OJX61x This easy-to-follow guide will help you ensure your amplifier is operating at optimal levels, maximizing performance and longevity. Whether you're a seasoned audio enthusiast or just starting out, mastering bias measurement...
Can I Build The Ultimate TDA1541A DAC ?
zhlédnutí 12KPřed 4 měsíci
Can I Build The Ultimate TDA1541A DAC ?
Are 4 Vintage TDA1541A DACs with Ian Canada Streamer Worth the Hype?"
zhlédnutí 6KPřed 4 měsíci
Are 4 Vintage TDA1541A DACs with Ian Canada Streamer Worth the Hype?"
Sansui 4900 Bargain Vintage Amplifier. How does it sound
zhlédnutí 3,7KPřed 5 měsíci
Sansui 4900 Bargain Vintage Amplifier. How does it sound
Canon 200-800 for Video How good is it?
zhlédnutí 2,5KPřed 5 měsíci
Canon 200-800 for Video How good is it?
Gabster Year Review 20,000 Subscribers Thank you
zhlédnutí 1,6KPřed 5 měsíci
Gabster Year Review 20,000 Subscribers Thank you
10 Songs To play on your HIFI Stereo System
zhlédnutí 128KPřed 5 měsíci
10 Songs To play on your HIFI Stereo System
Canon 200-800mm How Sharp is it ? Will it shoot it in Low Light ?
zhlédnutí 20KPřed 5 měsíci
Canon 200-800mm How Sharp is it ? Will it shoot it in Low Light ?
If you see this Sherwood S5500 II Buy It. Most Beautiful Vintage Amp
zhlédnutí 5KPřed 5 měsíci
If you see this Sherwood S5500 II Buy It. Most Beautiful Vintage Amp
Canon 24-105 2.8 Z Lens Should you Buy it ?
zhlédnutí 3,3KPřed 5 měsíci
Canon 24-105 2.8 Z Lens Should you Buy it ?
If you see this Vintage Cd Player Run and Buy it ..... 4x TDA 1541 Dacs
zhlédnutí 61KPřed 5 měsíci
If you see this Vintage Cd Player Run and Buy it ..... 4x TDA 1541 Dacs
What's inside The Douk Audio ST 01 Pro. Deep look and tests.
zhlédnutí 8KPřed 5 měsíci
What's inside The Douk Audio ST 01 Pro. Deep look and tests.
Valencia Artisan Leather Sofa and Big Surprise in Audio Frequency
zhlédnutí 1,5KPřed 6 měsíci
Valencia Artisan Leather Sofa and Big Surprise in Audio Frequency
Electric Bike "Envo D50" Why most ignore the Tips for finding the Perfect one. And E-Bike Audio
zhlédnutí 5KPřed 6 měsíci
Electric Bike "Envo D50" Why most ignore the Tips for finding the Perfect one. And E-Bike Audio
Hybrid Capacitors are they the Audio and Tesla future, and Gabster Power.
zhlédnutí 2,5KPřed 6 měsíci
Hybrid Capacitors are they the Audio and Tesla future, and Gabster Power.
Compare speakers and Amps with Douk Audio switcher and the secret to crafting your own VU meter.
zhlédnutí 4,2KPřed 6 měsíci
Compare speakers and Amps with Douk Audio switcher and the secret to crafting your own VU meter.
Denafrips Terminator Dac Why I still own it.
zhlédnutí 7KPřed 7 měsíci
Denafrips Terminator Dac Why I still own it.

Komentáře

  • @tee-jaythestereo-bargainph2120

    Thanks Gabster ' your doing a great Job buddy '

    • @Gabster1
      @Gabster1 Před 7 hodinami

      Thank you you as well :)

  • @LorenzoNW
    @LorenzoNW Před dnem

    Why do you recommend hospital grade outlets for a stereo system? Hospital grade outlets are designed for a strong grip, not for low noise and high conductivity like a Furutech or Audience outlet that's specifically designed for high-end audio. And there's a world of difference between a $50 power cord and a $1000 power cord that you may or may not hear without a good power conditioner such as a Puritan or Audience. In many if not most cases, a dedicated line is not going to replace a good power conditioner.

  • @mykandrew
    @mykandrew Před dnem

    Challenge accepted! I’d love to chat with you about a custom build!

  • @Ivy13276
    @Ivy13276 Před dnem

    Thank you so much for your videos, very appreciated! I'm about to embark on a similar project and just curious, did leaving the crossovers uncovered give you any problems? Like dust collecting or oxidation from moisture in the air?

    • @Gabster1
      @Gabster1 Před dnem

      Not at all I use a Swiffer from time to time or a Photography air blower. having them outside not subjected to the vibrations helps with better sound.

  • @russelldonovan604
    @russelldonovan604 Před dnem

    Thank you, thank you, thank you! I have an integrated that supposedly had to be professionally biased, but with the CT-1, it was a breeze for this amateur.

    • @Gabster1
      @Gabster1 Před dnem

      Glad that worked for you

  • @tango_gru
    @tango_gru Před dnem

    Why is this the second best ??

  • @PerSkeles
    @PerSkeles Před 2 dny

    Bestest would be to have your own audiophile grade power plant.

  • @phongluu8865
    @phongluu8865 Před 2 dny

    Hi Gabster, do you sell your build or will you take order for your products? I am interested in the combo: streamer and TDA1541 DAC or your future TDA1541 differential DAC.

  • @LewisCostin
    @LewisCostin Před 3 dny

    dont forget to suspend it mid air with string. total isolation.

  • @HDMXYZ
    @HDMXYZ Před 4 dny

    Hi Gabster, missing you on the channel 😢 Best, Holger

  • @graham8316
    @graham8316 Před 4 dny

    I find 811 iv stage is amazing with 1541

  • @davidstein9129
    @davidstein9129 Před 4 dny

    Thanks for posting this Clint. Have you or any of your viewers yet developed any listening impressions about the two upgradable DACs that McIntosh makes..the DA1,found in this M49 Preamp, and the newer DA2? Thanks, David-

  • @bernhardmichaelfux308

    SO! At last, I did it! I just built my humble Raspberry Touchscreen streamer for CZcams music! Yes, I know, CZcams music isn't the most audiophile source out there, but: I DON´T CARE! I am just happy, that it works...lol. It was a long way from my PC over "audiophile Smartphone" to this raspy Volumio Device, but now it works! And I am happy! OMG... And it happened really fast the last few days. As soon as I found some of some Hans Beekhuizen videos by Coincidence, my mind was set- and I purchased the touchscreen first, then the Housing, then some cables! SO: at the beginning, I built the Raspberry Pi3B+ with a Touchscreen. And the Touchscreen was without UI and void; darkness was upon the face of the screen. And my Spirit moved upon the Touchscreen to find some Ideas. And I said, Let there be light: and there was light!

    • @Gabster1
      @Gabster1 Před 4 dny

      Congratulations the journey is as fun as the results. Thanks for sharing your experience.

    • @bernhardmichaelfux308
      @bernhardmichaelfux308 Před 4 dny

      @@Gabster1 Thank you Gabster, That said, i have built a small HiFi system with the Raspi-streamer and a pair of M - Audio BX8 Studio Monitors, and have to mention, that I am astounded by how nice it sounds. It is truly satisfying, how just a little money combined with a little DIY effort can create a real satisfying Listening system, although it´s only CZcams Music.

  • @mcubaynes
    @mcubaynes Před 4 dny

    Why install rock if i can just install the windows version on my nuc. Tks

  • @AverageNiceGuy
    @AverageNiceGuy Před 5 dny

    Ordered, received, waiting on capacitors. 😎👍 Update: Received, assembled, brilliant design! 🙏

    • @Gabster1
      @Gabster1 Před 4 dny

      Play safe 🙃

    • @AverageNiceGuy
      @AverageNiceGuy Před 4 dny

      @@Gabster1 yes Sir! 🫡 I understand the boom factor very well. Capacitors arrived today. I will not continue until I am less tired from work. 😎👍

  • @Nightjar726
    @Nightjar726 Před 5 dny

    What’s the rest of the circuitry on the board of the capacitors ?

  • @AverageNiceGuy
    @AverageNiceGuy Před 6 dny

    Thanks!

  • @AverageNiceGuy
    @AverageNiceGuy Před 6 dny

    Thank you. I have the IanCanada parts. I should have the capacitors soon. Thank you very much for giving me the knowledge and courage to do this!

  • @kevindewinter8235
    @kevindewinter8235 Před 8 dny

    Wow

  • @kevindewinter8235
    @kevindewinter8235 Před 8 dny

    Is it possible to ad super capacitors to my already owned 8 lineair power supplie? Bought all last months :/

    • @Gabster1
      @Gabster1 Před 7 dny

      if they are 3.3v or 5v yes

  • @user-ld2bq5qh7j
    @user-ld2bq5qh7j Před 9 dny

    Hi kimber cable or nordost ?

  • @minipv9972
    @minipv9972 Před 9 dny

    Hi Gabby, if there is 1 person in the world that can do it's you. I m trying to build a Ruark R1s smart radio that has fm, dab media streamer in compact cabinet but all I find is cheap esp32 with mono sound . Any ideas how to start?

    • @Gabster1
      @Gabster1 Před 8 dny

      why not build a mini dac like the simple Protodac on a RPI most stations stream online

    • @minipv9972
      @minipv9972 Před 8 dny

      @Gabster1 yes but you do not have dab and fm. Is not Canada everywhere...

  • @lewis72
    @lewis72 Před 10 dny

    In order to best isolate vibrations, you'd need to know the frequency and amplitude of the vibration input and the mass of the system you are trying to isolate. There are 3 ways to reduce vibrations being transferred into a system: 1 - Mass 2 - Springs 3 - Dampers. Each one of the above operates best in different ranges of frequencies.

  • @jpphelps3663
    @jpphelps3663 Před 10 dny

    Great video.

  • @roderickdeleeuw2101
    @roderickdeleeuw2101 Před 11 dny

    How would a FMC setup compare, technically and practically, to an iFi iSilencer? They both seem to filter the noise out, however, 1 has 2 boxes and 2 power supplies. Whereas the other (iFi) is just a dongle. Both are priced roughly similarly. Perhaps you need 1 of the 2 or perhaps both. Any thoughts/experience?

  • @imiafamily
    @imiafamily Před 13 dny

    На низах конечно кошмар жуткий.. Столько резонансов... Жалко, что в этот раз у вас не получилось...

  • @imiafamily
    @imiafamily Před 13 dny

    Шикарный звук, очень достойный! Сразу видно, что сделан опытным человеком, знающим предмет. Очень впечатлён!

    • @imiafamily
      @imiafamily Před 13 dny

      Сейчас есть масса dsp, которые позволяют обойтись без сжигания мощности усилителя на кроссовере, и максимально сгладить ачх. Жалко, что вы их не используете..

  • @AverageNiceGuy
    @AverageNiceGuy Před 13 dny

    Nicely done! I've just ordered SCpure clocks and #91B Flagship Full function FIFO Re-clock DDC Streamer with S/PDIF AES/EBU output assembled and tested

  • @AverageNiceGuy
    @AverageNiceGuy Před 14 dny

    I have re-watched your video many times. I am finally brave enough to have ordered the parts 😎👍 Thank you very much for giving me the knowledge and courage to do this!

    • @Gabster1
      @Gabster1 Před 14 dny

      sounds exciting good luck and have fun

  • @Mario_Terzi
    @Mario_Terzi Před 14 dny

    What good is the optical cable if you are going to use poor LAN cables?

  • @Nightjar726
    @Nightjar726 Před 15 dny

    I have an Ifi Zen Can headphone amplifier and for it to work well with low impedance headphones it needs more current. I need a super capacitor that is plug and play with 5V and around 4-5A. Do you have anything like that for sale? Great that you are selling these now!

  • @so4706
    @so4706 Před 15 dny

    amazing especially Roni Alter and the Hidden Citizens - you might try Superbass 2

  • @TerenceKearns
    @TerenceKearns Před 16 dny

    I'm not at all experienced with electronics but you made this look quite accessible. I might even give this stuff a go.

  • @ronmatthews1738
    @ronmatthews1738 Před 16 dny

    What are the spikes on the turntable? I have gone through your other videos, but I can't find them. Thanks for any help.

    • @Gabster1
      @Gabster1 Před 15 dny

      Hard to find big ones most are tiny I make my own on a lathe like this one but bigger czcams.com/video/pAzcFoIEeLE/video.htmlsi=3HP6l6NaJuLfqGC9&t=1280

  • @user-xw1mk6bz2c
    @user-xw1mk6bz2c Před 17 dny

    Can it handle 8ohms speakers?

  • @MogensBuskbjerg
    @MogensBuskbjerg Před 18 dny

    Hi I like you Chanel a lot Thanks I have a pi with #20B. TransportPi Digi,Audiophile grade master mode digi transport And use popieee and roon with a external DAC. Can I use the protodac instead of my external DAC?

    • @Gabster1
      @Gabster1 Před 17 dny

      Yes you can I believe you can simply plug the protodac on top of the TransportPi Digi as according to the manual Pin 2 and 4 are 5v so simply plug it on top and enjoy the music let me know if it sounds better or not.

  • @pbloemer
    @pbloemer Před 18 dny

    Why call it a media converter? It is purely transporting TCP/IP packets from Ethernet to Fiber. Why add extra connections in your chain?

  • @edgunleshiy4492
    @edgunleshiy4492 Před 19 dny

    Great info !

  • @domtomas1178
    @domtomas1178 Před 20 dny

    Funny you should say that if it's not built in North America it's looked down on... My Hifi is entirely built and designed in the UK and EU, and I actually would always choose it over some American brand 😂

  • @user-mm7ot5zq2c
    @user-mm7ot5zq2c Před 20 dny

    If you want to get extremely low ESR. In fact, you can buy the cheaper version of Ian's and then using multiple supercapacitors in parallel can significantly reduce the overall ESR. For example, if each 3000F supercapacitor has an ESR of 1mOhm, then four capacitors in parallel would result in a total ESR of 1mOhm / 4 = 0.25mOhm, which is close to the 0.23 mOhm value.

  • @user-mm7ot5zq2c
    @user-mm7ot5zq2c Před 20 dny

    Unless your clock is of exceptional quality, surpassing that of Ian’s SC-Pure, you won’t experience a significant enhancement in sound quality by using the UcPure Quad. Instead of investing a substantial amount of money on the UcPure Quad, consider enriching your collection with additional audio CDs. This approach not only diversifies your musical experience but also makes effective use of your existing equipment.

  • @bobmop2841
    @bobmop2841 Před 21 dnem

    Hi there, nice build. I have a general question: If you add the USB amanero interface, and connect it to your PC. will it detect the card as a soundcard and then output to the DAC? I would guess so? Also, how does the input selection work? If you add for example a CD player digital output to the SPDIF input on recieverpi, how do you select which input to use? Via the pot on the screen?

  • @dana0001
    @dana0001 Před 22 dny

    Thanks for showing this particular build. Now I have some more summer projects to do :-)

  • @MrTeff999
    @MrTeff999 Před 23 dny

    If you ever read this, please tell me why you needed to use a crossover when you are only using a single driver? Also, what is the advantage of a folded horn compared to a Voigt tube? Thanks.

    • @Gabster1
      @Gabster1 Před 21 dnem

      The frequency response is rarely linear some frequencies are high like in this case the midrange is a bit higher and needs to be tamed down a bit to sound better.

  • @spoonblender797
    @spoonblender797 Před 23 dny

    LOL not sure how you arrived at the sum of $250 for this. The MA alone is $200 delivered to Europe with import tax. The iFi power units are $80 each too and then the Protodac costs are on top of that. More like $500 total and there are much better sounding DIY options for that sort of money, or even a fully finished ChiFi DAC with DSD and USB input. Then, you start talking about putting expensive clocks in there too! Also, are you 'grounding' your Altoids tin to a block of wood?

  • @bobbydedman5899
    @bobbydedman5899 Před 24 dny

    Gaby, I am quite new to your channel. So glad that I found you. I am a retired disabled veteran in the USA. I have loved good music all my life and passed it on to my kids. Two of my 3 children (grown), are musicians. I have always been a DIY, and was an early adopter of technology in my generation. I can't believe I have waited until I am 60 years old (Aug, 26) to get interested in higher quality HiFi. Thanks for all of your videos. You are a wonderful presenter.

    • @Gabster1
      @Gabster1 Před 24 dny

      Thank you Bobby it is never too late I picked it up a couple years ago after my last Amp build in my early twenties. enjoy the ride

  • @wric01
    @wric01 Před 24 dny

    hmm, Would be a good idea to use Rock wool to lined the high voltage areas/contacts as shield incase it blows it won't catch on fire at least buys you time.

  • @VPDbc
    @VPDbc Před 24 dny

    To many additions, seems like a gimmick

  • @Patrick-xq3ln
    @Patrick-xq3ln Před 25 dny

    Very nice to have someone investing so much time and effort to share this. I am currently trying to figure out how to create my own active crossover with 4 DACs to power 8 amps. I think mcfifo is what I need. It Would be awesome if you could show us how it’s done! 😅

    • @Gabster1
      @Gabster1 Před 25 dny

      not sure about 4 dacs as you will get into timing and phase issues maybe1 dac 4 preamps and 8 amps

    • @Patrick-xq3ln
      @Patrick-xq3ln Před 24 dny

      I was looking into the Iancanada mcfifo which claims to link multiple dacs in time and phase. This would allow for a digital crossover that surpasses the limitations of analog networks. I usually see people use pro audio interfaces for this purpose but never have I seen someone create their own. I want to do it myself but I have never tried anything like it. I would prefer to see someone else succeed first.

  • @jaffriechen5298
    @jaffriechen5298 Před 26 dny

    There's lots of SQ improvement to be had if you fiddle around the TDA itself