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dmance

Responses from dmance

Higher End DACs
Recently,  REMASTERO (https://www.remastero.com/pggb.html) announced PGGB offline remastering with sinc filter reconstruction using hundreds of millions of taps and advanced noise shaping. The process is offline ...meaning a source file is convert... 
Higher End DACs
Not just Playback has an optical link .... Chord DX DACs can have the benefit of a high resolution optical link from source/upscaler to DAC using OPTO-DX. And for those totally on digital streaming, the combination of a software PCM upsampler (Roo... 
An EXPERIMENT for those who have never heard differences in cables
Phono stage needs stable voltages for the small-signal to phono(line) level conversion. A turntable dictates the timing of the output waveform and needs mechanical isolation ...similar to a DAC needing ultra low noise to ensure the output clock is... 
An EXPERIMENT for those who have never heard differences in cables
Here is the truth of the matter. Wires act like antennae. Length, construction, metallurgy all vary their efficiency as a TX or RX.  The change in sound heard when changing the wire has nothing to do with resistance or ability to move a coil in a ... 
Higher End DACs
Heaudio123It's worse than you just galvanic conduction of RF.  Even with optical from server to DAC, you can tweak the server to change the sound. Why? Because the RF conducts along the metal AC power cord to the wall and to the household grid. Yo... 
Higher End DACs
I'm going to start my own thread on RF isolation of DACs. It's a topic whose time has come. It good to be pragmatic but it's also good to accept new ideas. Understanding is the first step toward a full resolution.  
Higher End DACs
heaudio123the link to my whitepaperi'll have my isolation units out to influential users over the course of the year. more ears and more voices will change minds. 
Higher End DACs
@cleeds I have a signal hound BB60 and have done the tests (see my whitepaper). I have done the checks for alternative explanations. Repeated the tests. It's quite clear that a DAC fully isolated (say runing off a battery with a source chain burie... 
Higher End DACs
@geoffkait I considered the problem as a DAC being an antenna. I analyzed the DAC outputs while the DAC and device-under-test was in a Faraday cage. So it’s quite clear that when a generator of RF is even just proximate to a DAC (no connection) th... 
Higher End DACs
RF is the elephant in the room. The invisible elephant that changes shape and size with every digital tweak ...but still remains to affect the DAC. It's all because we have clocked digital devices proximate to the highly sensitive D/A.Ahhh...but w... 
Higher End DACs
@yyzsantabarbara @tomic601 RF is insidious. If we had eyes that revealed the full EM spectrum we would see fire hoses of radiated energy everywhere. I don’t know why DACs are so sensitive to RF noise but as our systems become more transparent, its... 
Higher End DACs
@mikelavigne Mike - how can local vs streamed files sound better? How can you sense ’edgyness’ from one vs the other if the bitstream is the same. The MSB Select II supports a bit-perfect test file. Play the test file from SGM Extreme or ’pick any... 
Higher End DACs
I have a lowly celeron NUC as my server.  Its inside a 90dB RF-STOP isolation chamber with only optical I/O. This means zero RF noise escapes to impinge on my DAC and sounds, IMO, like endgame quality.  If we are all pragmatic, we know that the SG... 
Higher End DACs
@audiotroy,Dave,I don’t doubt your experience of differences in sound quality - perhaps your DACs are intolerant of jitter. Yes,Toslink is synchronous and maxed at 192/24 but apart from that its the same as any other digital transport...from the m... 
Bits Are Bits, Right?
@mkgus,Bits are bits. Some DACs like MSB and PSAudio Directstream support bitperfect test files that you can stream from your source.  When the DAC detects the file contents, it lights up 'BitPerfect' ...which tells you the path from your source t...