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Singularity, just a start.
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Master 11 (Singularity)

(The
PCM1704UK stock in an emergency,
Global
200 units limit
)
Discrete  DAC + Headphone amplifier / Preamplifier
Combine from the Singularity 11 + Master 9

Fully programmable hardware design ,support future upgrade without hardware modify
Built in
4 PCs top grade R-2R  PCM1704UK
32bit / 384K Amanero combo384
Supports up to 384KHz /32Bit at USB & IIS
Supports up to 192KHz
/24Bit at SPDIF

OCC wires & TCXOs applied
Building with top grade parts & workmanship


Price : USD2038 (Exclude shipping cost)
HDMI and AES/EBU can be custom order.

 

       

          
    
Summarize Use Manual Specs Custom Option Shipping Cost

Audio-gd products had design and test based on the AP SYS-2722 (The top-drawer professional equipment in world) 


USB specs and driver install guide :   Amanero combo 384

Singularity 11Athe total full new design:
           Whilom, I wish can support the products upgrade after sale, I was applied the modules design, I was design the DIR modules for the SPDIF process, and the DSP module for the data process, and the CAST module or others for the analog process .
           However , the modules design had degrade on the sound quality , the benefit of the upgrade able is not worth .
            Afterward , I had not put the point on upgrade after sale, I had design the last version Master 7, except the USB input module, all parts had assemble on the motherboards , it was a succeed product. It had much better sound quality than our any older design, it sale more than 54 months without upgrade the design.
           Now, Singularity 11 release, the design had give up the normal and low performance chips, which is only can working with tens MHz frequency clock , it applied two pcs Xilinx CPLD, and an Altera FPGA to perform all the data process . All three chips are the Programmable and  ultra high speed devices , the different to the MCU, ARM and CPU is they can process a lot different data simultaneity up to 450MHz speed, but the MCU, ARM and CPU only can process the data step by step in series. Simultaneity data process can much exact to process and this is most important in digital audio area .
           Singularity 11, applied the software design hardware concept , the benefit of the programmable chip applied, not only I can through edit the codes in the software to perform different hardware design for improve the performance or get different functions, but the programmable chips had very short signal journey and without parasitical capacitances , the digital signal had much exact in transmit and process, avoid the data lost because the signal delay and attenuation . 
           Singularity 11, built in two high performance TCXOs for process different sampling signal, working as in the no jitter state, revert all detail and soul of the musics .
           Singularity 11, no longer had the performance and sound quality limit by the normal and fixed function chips like the DIR9001, WM8805 and the DF1706, all function blocks are through the software design with the ultra speed characteristic, can got the best timing performance ,  minimal jitter , boost the sound quality most neutral , the detail, dynamic can fully show in your system.
           Singularity 11, through software design and perform below hardware circuits:
           SPDIF (coaxial and optical ) decoder .
           AES/ EBU decoder.
          Source signal select with minimal timing delay .
          Clock signal regeneration .
          Digital signal process and refuse jitter process.
          Digital filter process.
          Singularity 11AI had design the most neutral sound quality, but for best suite the users personal flavors which is like the coloration sound flavor , it had built in different setting for users can through change the setting and oversampling (8x, 4x, 2x and NOS) to get different sound flavors .
          Singularity 11, the fully programmable design , while the digital audio technology had develop ,I can edit the software codes for improve the product  without modify the hardware on boards. If users love the PCM1704, it will not become out in future ten years even longer .
          Singularity 11, applied the top grade R-2R  PCM1704UK chips ,which is famous in world, even through I had order a large number from TI before the PCM1704 discontinued , but for the hot sale in these years, the stock in an emergency , I only can arrange to build 100 units Singularity 11 , not long later, the product which is built in PCM1704 will become story .
          Singularity 11 , the sampling support of all inputs as below (Cause by the PCM1704 support up to 1536KHz sampling, so the 192KHz or lower sampling can working between NOS to 8x times oversampling, over 192KHz will working with 4x times oversampling auto, or by the users setting between NOS to 4x times oversampling ).

           IN1 G BNC coaxial input, support up to 24bit / 192KHz .
           IN2 G RCA coaxial input, support up to 24bit / 192KHz .
           IN3 G RCA coaxial input, support up to 24bit / 192KHz .
           IN4 G Optical  input, support up to 24bit / 192KHz .(note 1)
           IN5 G IIS input, support up to 32bit / 384KHz .(note 2)
           IN6 G USB input, support up to 32bit / 384KHz .
           IN7 :      XLR analog input.
           IN8 :     RCA analog input.
           IN9 :     RCA analog input.

         
Singularity 11, except the full new digital design, but the analog design had improve for get lower distortion and better transparency sound quality .
(Note: 1, The optical receiver had applied the 25M bandwide parts, it can support up to 24bit / 192KHz in test, but the worldwide standard is up to 96KHz , so users must check your source if support up to 192K.
           2, The IIS input can support up to 384KHz in test but if the transmit cable is too long or had worst quality, it may can't achieve the design performance .)


Singularity 11 technology detail:

ACSS G 
              Singularity 11, is a real fully balanced discrete design.
              Applies the 4 Pieces Expensive high-end grade PCM1704UK, which is the top grade R-2R chips, every channel had built in 4 pcs , every 2 pcs in parallel, and then they are working in balance mode . In my particular design, all 8 pcs PCM1704 are working for outputs, even just connect the RCA outputs .
              

               The SPDIF inputs can support up to 24Bit / 192KHz ,and the USB, IIS inputs support up to 32Bit / 384KHz .Cause by the PCM1704 support up to 1536KHz sampling, so the 192KHz or lower sampling can working between NOS to 8x times oversampling, over 192KHz will working with 4x times oversampling auto, or by the users setting between NOS to 4x times oversampling .
               Different to other PCM1704UK designs , it applied Non-feedback ACSS analog stages. The 8 pcs PCM1704UK feed to the ACSS analog stages without any OPAs and couple caps so it can avoid sound coloration .
              The ACSS is a non-feedback technology made with fully discrete amplifiers. Most people know the global feedback design can offer better specs in test measurements, and classic non-feedback can't do well in test measurements but can offer better sound for the human's ears. Here is a conflict of the classic circuits. But the ACSS opens a new field, it can offer a least coloration sound which is more neutral with very low distortion and high linearity. So it can retain the dynamics, detail and neutral sound but not sound bright or harsh.
              About the ACSS technology detail, Mr. Ho had post some few articles in the monthly <Radio & television > since 2007 year.  

Output buffers :       
    
Singularity 11 output buffers had applied 4 pair power transistors ( 150W / 15A ) working on  class A state, the output impedance is only 1 ohms , it can drive most headphones and amps as well .
Singularity 11 has all components of four channels exactly matched before installation.
           The analog part is without couple caps to avoid coloration, and power supply by four groups class A PSUs.
           Applies ACSS technology, even though maybe you only connect to XLR or RCA output, Singularity 11 will always operate in ACSS technology, and benefit from ACSS technology. Therefore, XLR and RCA output will also definitely bring about improvement in sound quality. Even through RCA output, the 4X PCM1704UK DA chips will perform fully.


Processor:
           Singularity 11, applied the software design hardware concept , the benefit of the programmable chip applied, not only I can through edit the codes in the software to perform different hardware design for improve the performance or get different functions, but the programmable chips had very short signal journey and without parasitical capacitances , the digital signal had much exact in transmit and process, avoid the data lost because the signal delay and attenuation .
           Singularity 11, built in two high performance TCXOs for process different sampling signal, working as in the no jitter state, revert all detail and soul of the musics .
          

           Singularity 11, no longer had the performance and sound quality limit by the normal and fixed function chips like the DIR9001, WM8805 and the DF1706, all function blocks are through the software design with the ultra speed characteristic, can got the best timing performance ,  minimal jitter , boost the sound quality most neutral , the detail, dynamic can fully show in your system.
          Singularity 11, through software design and perform below hardware circuits:
          SPDIF (coaxial and optical ) decoder .
           AES/ EBU decoder.
          Source signal select with minimal timing delay .
          Clock signal regeneration .
          Digital signal process and refuse jitter process.
          Digital filter process.
          Singularity 11AI had design the most neutral sound quality, but for best suite the users personal flavors which is like the coloration sound flavor , it had built in different setting for users can through change the setting and oversampling (8x, 4x, 2x and NOS) to get different sound flavors .
          Singularity 11, the fully programmable design , while the digital audio technology had develop ,I can edit the software codes for improve the product  without modify the hardware on boards. If users love the PCM1704, it will not become out in future ten years even longer .

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Power supply:
              Singularity 11 applies the excellent 4 pcs PCM1704UK with DSP-1 combo and excellent analog output amps, but these are not the only keys of the best sound. The power supply is most important. Even applying the best DA chip and the best amp, if matched to a normal power supply, the total sound may still be average or sound musical, but can't be neutral and detailed. That is why it is easy to find hi-end grade gears maybe without the best chips or amp stages, but with plenteous dedicated DC supply circuits.
             The Singularity 11 uses 8 groups of high-quality class A parallel connection PSU , which can offer very clear DC power for the DAC and amps, producing a very black background and neutral sound characteristic. The class A  PSU is very important for digital parts. Some designs may have very low jitter in theory, but if the power is supplied by a dirty or low-speed power supply, it will increase the jitter and pollute the data, and degrade the sound quality obviously.
             The class A parallel connection PSU has very high input impedance to avoid pulse through the PSU from affecting the DAC and low output impedance with very fast speed and high linearity, so it is a very clean power supply. In my experience, its sound is better than battery power supply, better human sound and neutral.
             The Singularity 11 uses three high performance transformers. More than 50,000uf audio grade NOVER capacitors are used to ensure ample and smooth power feed. A total of 8 groups class A SPUs and 3 groups linear PSUs are used to purify the power supply. To achieve high S/N, the control circuit is powered with separate regulator.

              
         
Volume control:
              The volume control is also different from conventional technology. Conventional volume control technology is the volume control implement in the analog amp input stage through a volume pot to reduce the signal . The volume pots quality effect the sound quality direct , the low quality volume pot cause lost the detail and channels imbalance cause the soundstage distortion . Even the high performance volume pot still cause the detail lose. Whatever quality volume pots, must cause the S/N worst .
               But in the Singularity 11 , we applied the I/V conversion volume control , the volume control just a variable passive I/V conversion place at the ACSS amp output , where the output is the current signal, not the voltage signal. The volume control is I/V conversion, and the volume depends on the current (I) conversion to the voltage (V). (Like R-2R D/A chips output passive I/V conversion) It can keep the signal frequency band flat and not lost any detail. It can't degrade on sound quality in every volume level . After the volume , there are four groups  diamond non-feedback buffer output stages offer the very low output impedance .
               The volume control quality is much important in the real balance gear . It must guarantee the four channels signal control exact to achieve the performance of the real balance gear . If the cool and hot of the balance signal can't guarantee exact, the balance output will has large distortion cause the sound quality and performance even much worst than a single end gear waste the balance gear design and the cost.
In Singularity 11 is applied a four channels digital control relays based volume control. .Singularity 11 has total four channels through changing the DALE resistors to control the volume for avoid channels imbalanced ,achieve the best performance and sound quality of the gear.
                 Singularity 11 have 100 steps volume control, control range achieve 90DB (usually the steps volume ports, potentiometer volume port, relays base volume control all have around 70DB range ), very smooth control range on first 50 steps , cooperate with 20DB high gain, so can very easy adjust the volume for both high / low sensitivity headphone and speakers. While change the volume, the different relays break or close, it may had slightly switch sound on output and disappear while stop change the volume.
          
Supper Exponential volume characteristic        The Volume steps comparison to normal volume knob       
                                                                               


Building:
         
Singularity 11, it is not put the parts full in the chassis, but the audio grade parts can offer better performance and working steady . Applied the normal parts not worst if the design is excellent, still can had rich musical , but no way to had the most neutral sound .
           
Singularity 11 had most applied DALE, WIMA and Nover ect. audio grade parts, and the Canare , Natrik sockets, and the OCC wires, custom order TCXOs which is building without compromise .
           
Singularity 11, assemble in a heavy monsters chassis which is built by pure aluminium . It had the thick aluminium board to separate the power transformer, digital parts , the left and right analog parts. Even the IEC power inlet, had shield in a pure cooper shield box .
           

            Singularity 11 , every unit finished the parts assemble , must had the full test by the technician , then build by another technician . There are 300 hours burn in time after building, during the burn in time, every unit must had two times test in every day . Finally , the QC technician had the final test and audition before package and shipping.  The complex process in the building , just for keep every units had the highest quality .
           


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