you should try the OPA1688 in there...
!
Managed to get some samples of this. In my system and to my ears the AD4898-2 sounds better and still the best op amp for the DiyinHK board.
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Thanks for sharing. Could you try to describe the differences which you perceive between the two ?
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I don't think that is easy to do. You just know it when you hear it?
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Hello themystical,
Quick question : in your dual mono implementation, after configuring each DAC to output only left or right via I2C, did you do anything else? For example, did you invert the phase of one channel per DAC so that there's another differential / summing step? Or did you just get one channel's output per DAC?
Quick question : in your dual mono implementation, after configuring each DAC to output only left or right via I2C, did you do anything else? For example, did you invert the phase of one channel per DAC so that there's another differential / summing step? Or did you just get one channel's output per DAC?
Hey everyone, I'm interested in building the diyinhk Ak4490 dac, together with their isolated XMOS and LT3042 regulators - 3 pairs alltogether, for 3.3v, 5v, and +-15v.
Two questions though:
1. should I go for LT3042 all around or are the shunt regs much better in this dac? Something like Salas BiB and Reflektor-D, or TPA trident regs with Placid HD?
2. Would the JLSounds lcd board work on this dac, maybe with some adjustments? Link here
If it won't work, what is the easiest option to have direct volume control (not over pc)?
Also, this thread is a little quiet, is there something new going on?
Two questions though:
1. should I go for LT3042 all around or are the shunt regs much better in this dac? Something like Salas BiB and Reflektor-D, or TPA trident regs with Placid HD?
2. Would the JLSounds lcd board work on this dac, maybe with some adjustments? Link here
If it won't work, what is the easiest option to have direct volume control (not over pc)?
Also, this thread is a little quiet, is there something new going on?
No, the JLsounds display board can work only with their DAC board, which includes a uC.
I'm afraid there's no easy solution for "direct" volume control with the diyinhk boards. You would have to use some uC board, may be an Arduino, and program it yourself.
If you're looking for an easier and ready made solution, then go for a full JLsounds setup.
Or a Mirand (see sonnya thread here on diyaudio). Possibly better, but more expensive than the simple JLsounds.
JLsounds also have a ready made dual mono complete DAC board (with 4495, though). Looks very nice, but it's rather expensive.
Hope it helps.
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@UnixMan thanks for clearing that, already ordered from diyinhk so I'll have to find another way for volume control. It would be nice to use Raspberry Pi as player and hardware volume control at the same time.
@Raj1 could you share some details of your build? I ordered LT3042 regs cause it was convenient, but I did read that shunts should be even better for a dac, especially for analog section.
And to go back on-topic: how much more power does a dual mono draw compared to stereo version, and are these LT3042 regs sufficient for that? (Should be around 500mA more according to diyinhk description)
@Raj1 could you share some details of your build? I ordered LT3042 regs cause it was convenient, but I did read that shunts should be even better for a dac, especially for analog section.
And to go back on-topic: how much more power does a dual mono draw compared to stereo version, and are these LT3042 regs sufficient for that? (Should be around 500mA more according to diyinhk description)
Hi,
I use Tent Shunt regulators for all rails and have separated the 3.3V analog and digital rails on the DIYINHK board. The Analog 5V can be overvolted somewhat, so I asked Tentlabs to make me a 7V shunt for that. The noise of the Tent shunts is lower than most of the other solutions, which is where I think some of the sonic gains come from.
-Raja
So do you use only the Tent regs or have some other regs/preregs before them? Could you be so kind to post a photo of how you fit the Tents in there? Most interested
So do you use only the Tent regs or have some other regs/preregs before them? Could you be so kind to post a photo of how you fit the Tents in there? Most interested
No pre regs. Just some local capacitance and fly leads to battery packs. Can't post a pic as Im currently on a business trip in Taiwan. You don't need one really. The DIYINHK board has headers for power input and that's all one needs.
Ok, I thought you modded the board somehow. That's pretty straightforward then, I'll make sure to try the batteries and build some Salas shunts later on. Can't wait for the kit to arrive
Here's an interesting AK4497 implementation with an onboard MCU to give integrated software control; has option for volume control and configuration setting via jumpers/switches. Downside is the limited flexibility for optimising power supplies. Some of the soldering looks a bit iffy too.
AK4497EQ DAC kit / official standard balanced line I2S/DSD Decoder kit R59 | eBay
AK4497EQ DAC kit / official standard balanced line I2S/DSD Decoder kit R59 | eBay
DiyinHK has produced a board for the AK4497. Just ordered a couple for a dual mono set-up.
http://www.diyinhk.com/shop/audio-kits/118-768khz32bit-ak4497eq-dac-i2sdsd-input.html
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http://www.diyinhk.com/shop/audio-kits/118-768khz32bit-ak4497eq-dac-i2sdsd-input.html
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I've had a look at the DIYINHK board and don't fancy trying to implement software control to get the full AK4497 configuration/functionality?
No AK4497 chips either?
No different to his AK4490 or AK4495 Boards. Software control is easily implemented via I2C using Arduino which is very very cheap.
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