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Posts by Solude

If the input was just right to get maximum power when the volume was at 100% and you increase gain... the maximum power will be reached before you get to 100% volume.  The advantage is if you have a lot of low output sources, classical, and a headphone that really needs all the power that the M11 can deliver.  Hence why it is referred to as the HE-6 mod.  While an IEM typically needs 0.01mW to play at 90dB the HE-6 needs 20mW.  For another data point the HD800 needs all of...
More the former than latter.  The default 16dB gain is already higher than the M11 can output if given 0dB content.  I.e. modern recorded music.  4x gain will cap out the M11.  The default is 6x.  6dB mod brings it to 12x.  Meaning 800mV input will cause it to clip.  The DAC outputs 2500mV at 0dB output.     Also worth remembering that gain is not power.  Adding 6dB gain does not change when the M11 clips only how fast you get there and depending on the source strength...
 Gain is a multiplication of signal strength.  6dB is 2x.  As a result noise is increased two fold.  Going the other way if you reduced the gain by 6dB then the noise would be cut in half.  Hence always use the least amount of gain needed for the wanted output.  Personally I very rarely need more than unity/0dB/1x gain for every headphone I've owned.  Though I have not owned the head speaker that is the HE-6.  HE-1000 is not hard to drive at 300mV for 90dB.  The M11 puts...
All true.  But OS does not reduce that number. PLL does as does upsampling where new timings are created.
Oversampling isn't related to jitter.  NOS is fine as long as the source is 88KHz or higher.  Otherwise you reflect back on the signal and have treble roll off.  Which is not to say some people don't like how that sounds.
Let's reel it in some gents.  The HeadRoom amps were just opamp/buffer amps.  The Blockhead has a better power supply than most of the line but still nothing special.  Not all that different than what you find in a Benchmark or Anedio all in one.  The module portion is the "amp".  
People say and or repeat a lot of things, most of which is a matter of opinion.  Until Inner Fidelity actually uses their measuring rig for some of these... we just don't know.  For example a lot of people jumped off the PS Audio PWD2 to the DSD but once Stereophile measured the DSD we knew that it was terrible especially for the price.  Not to say that some people don't enjoy it but technically, which is what we're talking about, it is bad.
 Why are we assuming that it is technically superior?
If memory serves it has to be a USB2 slot and not a USB3 slot.  Also the DAC function isn't terribly useful for anything but music since it will run out of sync with video after a little while. Eve then it's a little annoying to start a song and not hear it for a few seconds or after pausing have it continue for a few seconds.  At one point the delay from input to output was over 10 seconds for me.
It would take an HDMI source like the PS Audio PWT, Audio-GD DI-2014 or EA Offramp.  Also kind of pointless since the included Amanero already connects to the Mac via USB and outputs I2S to the M11.  The Offramp might be a few ps better but R2R DACs aren't sensitive to jitter so.... yeah.
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