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Author Topic: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)  (Read 17064 times)

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Hroðulf

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Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)
« Reply #60 on: December 10, 2014, 03:22:01 PM »
Don't keep us waiting more than we have to, MR!
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MisterRogers

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Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)
« Reply #61 on: December 10, 2014, 04:43:23 PM »
Ha! Will do mates. I should have final rev. schematics in a day or so; I'll post those so you all can start planning/designing.
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mvwvm

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Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)
« Reply #62 on: December 10, 2014, 08:30:45 PM »
Awesome!
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MisterRogers

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Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)
« Reply #63 on: January 02, 2015, 03:57:32 PM »
Happy New Years Gents!


Thought I'd post a bit of an update. Still waiting for a final schematic, but I've been listening to a Rev 0 for a week now. As with most early articles, the back of the board is unsightly with trace cuts & jumper wires. How does it sound? Fantastic! We're working through firmware issues/bugs, but sonically it's natural, dynamic and organic. It's amazing how good it sounds without TOTL clocks (I have a couple I'll drop in once we've sorted all the firmware issues). Each channel has discrete power - the digital PS is dual stage. I'll break down a components list when the dust settles. The plan is to sell this board(s) assembled. I'll be able to get bare PCB's for us pirates if anyone's interested. Here's a basic breakdown:


  • [/color][/size][/color][/font]Dual Mono AKM 4495S DAC’s [/color][/color][/color]Discrete PS for each channel. [/color][/color][/color]Discrete Pre-regulator / LDO for digital circuit. [/color][/color][/color]Galvanically isolated inputs. [/color][/color][/color]USB: PCM >= 384kHz, DSD64 / 128, 16 / 24 / 32 bits. [/color][/color][/color]Additional Inputs: S/PDIF, Optical, optional AES / EBU & S/PDIF. [/color][/color][/color]Outputs: RCA (SE) & XLR (Balanced). [/color][/color][/color]LCD Controller: filters, inputs, volume, etc. [/color][/color][/color]Premium Components: Silmic II, ADM7150, Nichicon FG, LME49724, LME49710, etc.
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Hroðulf

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Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)
« Reply #64 on: January 02, 2015, 04:53:09 PM »
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mvwvm

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Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)
« Reply #65 on: January 02, 2015, 05:23:20 PM »
Congrats. Not a fan of all-in-one boards though. Any chance of a just-the-DAC (IN: DC power, I2S; OUT: Vout+/- of the chip) board (for AK4490?) in the future?
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MisterRogers

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Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)
« Reply #66 on: January 02, 2015, 06:20:29 PM »
Certainly. I struggled with the choice for an all-in-one design myself, but decided in the end that if we were really going for the 'best we can do' approach, eliminating flying wires and controlling trace impedance would be worth it. Anyway - they'll be other builds I'm sure; we made a few decisions to get a proto ready for AKM to show at CES that we'll tweak.

I'll say this though - even without dropping in some high-end oscillators, it's pretty incredible that you can add transformers to this DAC and have it kick the ass of some of my uber DAC's with different chips and exotic power, etc.
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Chris1967

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Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)
« Reply #67 on: January 02, 2015, 08:43:53 PM »
This is good news!! and just in time because i was looking for a full balanced dac.

Any estimates on specs and price?
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Hroðulf

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Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)
« Reply #68 on: January 02, 2015, 08:46:53 PM »
Any wild predictions on how much will the board kit cost?
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MisterRogers

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Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)
« Reply #69 on: January 02, 2015, 09:50:24 PM »
I'll actually have a ballpark number tomorrow I think.
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