Hello everyone,
It’s been a long time since I last returned to the forum. Over the years, I’ve been quietly experimenting — trying, failing, and trying again — and have completed several DIY audio projects, from DACs and amplifiers to power filters.
Now, I’d like to share some of these results with fellow DIY enthusiasts, so we can learn, exchange, and connect through our shared passion.
Today, I’m introducing the DAC-End 24, one of my most cherished projects. This is a No Oversampling (NOS) DAC using the AD1865N-K chip — the same chip used throughout Audio Note’s product line, known for its natural, detailed, and uncolored sound.
🔧 Key features:
– No oversampling, no digital filter → natural, honest sound
– Passive I/V stage for clean and detailed audio
– Individual LT3042 power regulation for each section → ultra-low noise
– Integrated Amanero USB interface, supports PCM 24bit / 192kHz
– 4 selectable inputs: USB I2S, SPDIF RCA, AES/EBU, Toslink
– Compatible with SRPP or single-ended tube output stages to reach 2Vrms
– Compact, well-isolated layout, easy to DIY and upgrade
👉 Feel free to leave a comment or message me directly if you're interested.
– Quanghao
It’s been a long time since I last returned to the forum. Over the years, I’ve been quietly experimenting — trying, failing, and trying again — and have completed several DIY audio projects, from DACs and amplifiers to power filters.
Now, I’d like to share some of these results with fellow DIY enthusiasts, so we can learn, exchange, and connect through our shared passion.
Today, I’m introducing the DAC-End 24, one of my most cherished projects. This is a No Oversampling (NOS) DAC using the AD1865N-K chip — the same chip used throughout Audio Note’s product line, known for its natural, detailed, and uncolored sound.
🔧 Key features:
– No oversampling, no digital filter → natural, honest sound
– Passive I/V stage for clean and detailed audio
– Individual LT3042 power regulation for each section → ultra-low noise
– Integrated Amanero USB interface, supports PCM 24bit / 192kHz
– 4 selectable inputs: USB I2S, SPDIF RCA, AES/EBU, Toslink
– Compatible with SRPP or single-ended tube output stages to reach 2Vrms
– Compact, well-isolated layout, easy to DIY and upgrade
👉 Feel free to leave a comment or message me directly if you're interested.
– Quanghao
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That's true, but it appears, judging from your design, you haven't learned anything from AN's implementation. Yours, dated 2014, is copied from other diyAudio threads. BTW, the AD1865 is not 24-bits, as you indicate, it's 18-bits.
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Is this a product that you are selling? If so, it does not belong in this section, but in the commercial areas.
Hi Pano
This is not a product I'm selling. I just want to share a DIY project that I’ve completed, hoping that others can also build and enjoy it themselves.
Thank you for the reminder — I truly appreciate this shared community space.
This is not a product I'm selling. I just want to share a DIY project that I’ve completed, hoping that others can also build and enjoy it themselves.
Thank you for the reminder — I truly appreciate this shared community space.
You may receive even 32 or 64 bit, but AD1865 in reality is 15-bits.
It's ENOB=14.7 bit according to datasheet, and real device maybe even worse, depend of the schematic and layout.