Hanoi, Vietnam | 2024 – The high resolution PCM at 96-192KHz 24bit offer the possibility to have a good quality digital signal exceeding the big limits of the CD. The DSD is very different from PCM, using a sampling frequency 64 times higher than that of a standard Compact Disc, offers a frequency response of up to 100 kHz and a dynamic range of up to 120 dB across the entire audible range.
The DSD on paper should be better than hi-resolution pcm like the 192KHz 24bit because the two conversions (from and to the analog) are more simple (see this article from Korg website) but the AES Convention Paper 6086 and AES Convention Paper 5395, seems to contradict this.
The DSD signal can be directly used to reconstruct the original analog signal with a simple RC filter but with this method we get many digital noise also using a good digital and analog filters so forget this method.
I have lost many time and money to test these solution, using different USB to DSD interfaces, I2S isolators and D-type flip-flop.
The little Lampizator and RT audiodesign companies has succeeded to reduce the noise and produce a DSD DAC with this method but with some limits.
This project here exposed has another approach, it is based on the DSC1 that is an Open Hardware, “discrete” delta-sigma D/A-converter developped by Signalyst, the DSC1 is able to convert the DSD signal to analog without noise and without a DAC chip.
The DSC converters does not work with a PCM signal so it is necesary convert the PCM to DSD on the fly during playing so it is necessary to use computers with adequate performance.
In this project we have used the CT7302PL single chip dual channel audio digital to digital bridge with a sample rate converter to convert PCM signals to DSD.
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Why Star Pure DSD DAC?
- DAC with 05 inputs, 02 USB outputs.
- All components are very wel and famous.
- Brings impressive and lovely sound
- Play all audio formats up to DSD 512.
- Music server plays better music than the computer.
- Pure Transfomer output
- Designed in Italy, tested in Denmark, produced: Hq-audio.
- Use DAC without Preamli.
- Beautiful form, high quality components from Canada.
- Worldwide warranty, free upgrades.
- Products include:: DAC + Music server + Tranfomer output.
Star Pure DSD DAC Connects to Hi-End Audio System
The Star Pure DSD DAC offers 5 Inputs including:
- 1 = RCA,
- 2 = Toslink,
- 3 = AES/EBU,
- 4 = USB -Amanero
- 5 = I2S input conect dircet from Pi 4 to DAC
- And 2 outputs (RCA and XLR).
Star Pure DSD DAC Music Server multiple inputs – spoiled connection
The best premium Music with most comprehensive Investment
- No use chip DAC
- DSD x1, dsdx8
- Pure 1-bit direct delta-sigma design (DSD128+ compatible)
- 33-level multi-level conversion.
- Transient optimized analog reconstruction filter.
- No magic “black boxes”
Integrated Network Music Player-Raspberry PI Music Player
Moode-Audio is a software that turns Raspberry Pi into an Moode-Audio music player. It will make it perform as an high fidelity digital source.
The user interface is intuitive to use and connects easily to a NAS server or an optional harddrive. It can even easily be updated to support 3TB -4TB hard drives. A smartphone, Ipad or computer can be used as remote control via the buildin wifi and have a music system that organises your digital music, radio stations and streaming services in a seamless music experience.
The Premium USB interface from Italy
USB is supported by a unique true asynchronous FPGA based solution from the italian company Amanero. We believe it is the sound leading USB interface and gives a perfect Audio match for the Raspberry Pi. Besides being excellent in sound, the USB interface supports future high resolution audio format in PCM up to 384 and up to DSD512
Bo DAC designs superior and individual sources for each channel:
- LT3042-Ultralow Noise Ultralow RMS Noise: 0.8μVRMS (10Hz to 100kHz)
- Use LT3042 separately for each circuit.
- Use LT3042 separately for each analog circuit
The REMOTE Control
The DAC includes a gorgeous remote control is made of cast aluminum. Convenient, beautiful and easy to use. Just press the button and you have great features like: On-Off function, Volume control of the 32bit Attenuator, input select, mute function, select of PCM/DSD filter types and the frequency cutoff of the filters.
All the settings can easily be memolised.
The Remote is the PERFECT COMPANION FOR YOUR DAC.
Display
The Display shows all memorised settings. Large fonts for the volume setting are displayed so you can see the volume setting from your favorite listning position. The Chassis is a made by premium milled aluminium and with the 2 infinity control knob aluminum casting allows us to control and play music easily.
The control knobs in casted aluminum makes it easy to control the DAC and play music.
The simplicity and exquisite beauty is LIKE NO ONE ELSE and complete your home audio system.
Enjoy the design while listning to the music.
Inside DAC
Music Server in Star Pure DSD DAC
DAC integrates a Rasberry Pi4 to be the dedicated Music Server. It Take advantage of the endless digital music sources, especially the DSD64 format are very close to the sound of the SA-CD. The time for using bundles of expensive CDs and SA-CDs is over.
This Music Server will give you choose High resolution audio files. Actually, the DAC plays all formats of digital music file.
HQ Audio has seleceted the Raspberry Pi3 for music server, as this is the Music source that plays with an immersive listening experience that HQ Audio appreciate and admired for playing music better than a most then most of computers used as Music server.
Interface and Music Player Software
– http://moodeaudio.org/
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VOMUMIO is software for Pi4 with many features:
Nice interface, easy to use
Appropriate multi-DAC.
Connect easily, quickly, control by phone or tablet.
Continuous updating.
Best support for users free from Moodaudio
Also you can use other softwares such as: http://www.runeaudio.com/ or https://volumio.org/
Software
Design in Italy and software for DAC by Andrea Ciuffoli
Testing in Denmark and Meauser by Morten
Music server software by Moode audio, or runeaudio or volumio.org
Produce Hq-Audio
Quality:
Products are manufactured with genuine selection according to strict process. Test and test before leaving HQ-Audio with a team of experienced engineers.
Guarantee: Products are warranted for 12 months worldwide and are still free upgrades.
Hq-Audio is committed to providing the best products and services to customers who use the product.
Preferential when buying Dac Quang Hao:
Copy music files for free.
24/7 technical support $ 100 free upgrade consultation Get up to 30% off upgrades when purchased at Parts ConneXion (genuine electronics in Canada).
* Note: Promotional packages will not be converted into cash in any case!
COMMITMENT The deepest heart of QuangHao thanks and deeply grateful to all of you who have used the product Quang Hao – This is the biggest motivating force to promote HQ-Audiodessign more dedication to the career of Audio Vietnam.
About the Team
The design team behind the HQ- Audio works on separate technical aspects of the project and are dedicated electronics engineers with more than 50 years experience as audiophiles. This ensures an open mind to audible phenomena.
The design team bring to their labors skill, pride and with an unbridled enthusiasm which takes the engineering and critical evaluation of Audio equipment to new levels, reflected in the exacting standards to which every product is designed and manufactured.
To ensure the highst standard of each Hq-Dac, it will before leaving the factory be verified and final tested to ensure the final voicing. This verification is ensured personally by Hq-Audio
