Jandu
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Try to update the Amanero firmware.
Audio-gd R2R DAC Thread
Vicca Tito
100+ Head-Fier
It's updated to the last one.
Do you eventually mean to flash it again? The ex-owner has done that.
What did you have in mind by "Amanero firmware"? Isn't that one already there?
Jandu
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I mean flash the Amanero firmware again using the Mac.
Vicca Tito
100+ Head-Fier
I don’t think it’s possible using Mac. Maybe I’m wrong though.
Hello!
Who test new firmware on R!?
Who test new firmware on R!?
How to simulate?
holospringfan
New Head-Fier
simulate TDA1541 sound??
How to simulate?
anyone tried this?
edit: I found this
Active simulate SAA7220 +TDA1541A, digital attenuation low to -55DB, was -130DB. Bitwide low to 16bit , was 24 bit.
so it changes filter attenuation, and puts 16-bit
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in what modes does it work?
NOS? or for this firmware always?
NOS? or for this firmware always?
sajunky
Headphoneus Supremus
It should be the same as with other digital filters.
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phandrew
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Hi guys. I'm looking to buy either the Denafrips Ares II or R-1 soon. Has anyone used both and can give me some feedback on both?
ohcrapgorillas
500+ Head-Fier
I got a used Audio-GD DAC19 mk3 used a while back for around $325, I think? and while I certainly liked a lot about it, it never could compete with my last gen Bifrost Multibit. In particular, I was a fan of the rich, thick, and intimate sound, but ultimately it just sounded a little soft for my tastes and was noticably less clear than the Bifrost. Second, the seller never mentioned that the DAC was limited to 48 kHz sampling rates, which kinda irked me because some of my favorite albums happen to be in 96 kHz. I decided I was just going to sell it on, after upping the resell value with a small amount of effort: the output jacks were cheap, the bare wires connecting the two jacks had rusted over, and for the coaxial S/PDIF input, they used two random wires instead of 75 ohm coaxial cable. While most people get USB nervosa, but I actually get coaxial nervosa, mostly due to the widespread use of RCA connectors for SPDIF on anything but DACs that are mostly out of my price range.
The process was really easy. For the coaxial input, I installed a Canare 75 ohm BNC connector, and wired it to the PCB using some 75 ohm silver-plated copper coax wire. I used low-mass KLEI Copper Harmony RCA jacks for the outputs, wired to the circuit board with a combination of Duelund's silver in oil and silk, and Jupiter's cryogenic 6N OCC copper in cotton. I used both because I couldn't decide which would be a better complement, and because the two wires were mechanically much stronger than just the one. I thought about replacing the IEC inlet with Furutech, but that would have required significantly more disassembly, and I wanted to keep this simple.
The results are actually really impressive. I currently have both the DAC-19 and Bifrost Multibit hooked up to the Saga so I can switch back and forth. Both are being fed with the Pi2AES via BNC (1 BNC output and 1 AES > BNC trafo). By far the most obvious difference is in the bass, where the DAC-19 has better definition, heft, and slam; bass guitars sound more real with a more pronounced attack. Other differences aren't night and day, but the DAC-19 now sounds more well defined and focused, with better resolve, textural detail, body/presence, placement, and separation... these add up to a sound that, to me, is more believable and realistic, and that makes for a way better and more enjoyable listening session. I've never heard my speaker system reproduce this level of textural detail and definition, and it's proven to be very lovely and addictive. I did these mods to fetch a higher sale price, but ****in' a, this is a keeper. Yes, it's still a super warm, thick, tubey sounding DAC, but it's at least now it's a reasonably detailed, textured, and well defined type of warm, thick, tubey sound.
The sampling rate thing is annoying, but in the end it's a small trade-off for such an improvement. In my experience, the amount of focus lost to down/upsampling is tiny relative to what's lost by the use of RCA vs BNC for coaxial S/PDIF. Also, this DAC which is supposedly limited to 48kHz has no issues playing 88.2kHz files? I'm still wondering if there's a way to get moOde to play around with different filters, or to set rules, e.g. 44.1kHz files play bit perfect but 96kHz is automatically downsampled to 48. Maybe that's something the Gentoo player OS could do? For the time being, I'm not too worried about it.
I've been meaning to get some photos of the insides now that the whole job is finished and the unit is cleaned up, but I also don't want to turn it off. My phone's camera loves focusing on dust rather than whatever is right in front of it.
The process was really easy. For the coaxial input, I installed a Canare 75 ohm BNC connector, and wired it to the PCB using some 75 ohm silver-plated copper coax wire. I used low-mass KLEI Copper Harmony RCA jacks for the outputs, wired to the circuit board with a combination of Duelund's silver in oil and silk, and Jupiter's cryogenic 6N OCC copper in cotton. I used both because I couldn't decide which would be a better complement, and because the two wires were mechanically much stronger than just the one. I thought about replacing the IEC inlet with Furutech, but that would have required significantly more disassembly, and I wanted to keep this simple.
The results are actually really impressive. I currently have both the DAC-19 and Bifrost Multibit hooked up to the Saga so I can switch back and forth. Both are being fed with the Pi2AES via BNC (1 BNC output and 1 AES > BNC trafo). By far the most obvious difference is in the bass, where the DAC-19 has better definition, heft, and slam; bass guitars sound more real with a more pronounced attack. Other differences aren't night and day, but the DAC-19 now sounds more well defined and focused, with better resolve, textural detail, body/presence, placement, and separation... these add up to a sound that, to me, is more believable and realistic, and that makes for a way better and more enjoyable listening session. I've never heard my speaker system reproduce this level of textural detail and definition, and it's proven to be very lovely and addictive. I did these mods to fetch a higher sale price, but ****in' a, this is a keeper. Yes, it's still a super warm, thick, tubey sounding DAC, but it's at least now it's a reasonably detailed, textured, and well defined type of warm, thick, tubey sound.
The sampling rate thing is annoying, but in the end it's a small trade-off for such an improvement. In my experience, the amount of focus lost to down/upsampling is tiny relative to what's lost by the use of RCA vs BNC for coaxial S/PDIF. Also, this DAC which is supposedly limited to 48kHz has no issues playing 88.2kHz files? I'm still wondering if there's a way to get moOde to play around with different filters, or to set rules, e.g. 44.1kHz files play bit perfect but 96kHz is automatically downsampled to 48. Maybe that's something the Gentoo player OS could do? For the time being, I'm not too worried about it.
I've been meaning to get some photos of the insides now that the whole job is finished and the unit is cleaned up, but I also don't want to turn it off. My phone's camera loves focusing on dust rather than whatever is right in front of it.
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mivarpet
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I had a different iteration of the DAC19 and it could do 96K no problems. Original Audio GD links & reiews here suggest 96K is fine too -
https://web.archive.org/web/2010010....com:80/enweb/pro/dac/DAC19MK3/DAC19MK3-1.htm
https://web.archive.org/web/2010011...o-gd-dac-19mk3-435669/index7.html#post6000465
However, it could yours has a different input module - "Another modules for DAC19MK3 : PMD100 modules can replace the DF1704 modules but has different flavor , and highest input support 24Bit/55KHz" (from the Audio GD link).
Best bet is to open it up and look for the module. If it is the PMD100, you may be able to get the DF1704 module. You should email Kingwa at Audio GD as he is incredibly helpful.
ohcrapgorillas
500+ Head-Fier
I've actually been through this and spoken with him about it. This iteration does use the PMD100. Many have been of the opinion that the PMD100 has benefits that go beyond its sampling rate limit. I'm going to stick with it as it does sound absolutely lovely.
To be clear, I have no clue how or why 88.2kHz files seem to play without issue. I even forced my Pi2AES to output 24 bit/88.2kHz across the board and the only issues I had was this soft static during very quiet passages of down-sampled 96 kHz files. I'm just saying...it works fine.
Natively playing 96kHz files though...that definitely does not work. Just loud static.
To be clear, I have no clue how or why 88.2kHz files seem to play without issue. I even forced my Pi2AES to output 24 bit/88.2kHz across the board and the only issues I had was this soft static during very quiet passages of down-sampled 96 kHz files. I'm just saying...it works fine.
Natively playing 96kHz files though...that definitely does not work. Just loud static.
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jimmychan
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The other mod is change to i2s input that would give incredible SQ improvement.
ohcrapgorillas
500+ Head-Fier
Oh, I would love I2S input. Wouldn't this require a different backplane board, though? HDMI wouldn't fit in the USB slot... but yes I would love to fit this thing with I2S.
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