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    Adam A5X Review (Powered Studio Monitor)

    Can anyone test scientifically? We can just send 20Hz - 100 Hz to A5X, and see whether we measure some mid frequency noise. If yes, that mid frequency problem will be reduced by sending low frequency to subwoofer.
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    Is this a 50 Hz - 15 kHz mic? A usual way to write spec?

    For a cardioid mic that is to be placed quite close to the mouth, a headset mic, is it usual to write 50 Hz - 15 kHz for this frequency response curve?
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    Marantz SA-10 Review (SACD Player & DAC)

    Could you test "inter sample over"?
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    Topping A50s input impedance?

    What is the input impedance of Topping A50s? I could not find the owner's manual on Topping web site.
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    flac file played by blu-ray to DAC: bit perfect?

    The DAC does not display sample rate or bit depth. It merely shows which input (optical, coaxial, USB) is selected.
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    Measurements: "ESS Hump" revisited (Khadas Tone Board V1.3)

    I saw a THD vs signal level graph of the analogue output of RME babyface with ESS chip in a youtube review. The curve looked like that of a class G power amp.
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    flac file played by blu-ray to DAC: bit perfect?

    I guess the Blu-ray player decodes the FLAC file. It can search playable audio/video files on the UBS stick inserted to the USB socket on the front panel. The list of playable music file types on a disk or USB (from manual). mp3, wma, wav, m4a(DRM Free), flac
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    flac file played by blu-ray to DAC: bit perfect?

    Is this a bi-perfect playback? FLAC file played by a Blu-ray player -> HDMI cable -> TV -> optical cable -> hi-fi stereo DAC
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    What are the reasons to choose Class A/AB/H over D in this day and age?

    I do not think Class D amps are unrepairable. I guess that, due to low price, replacing the whole board or whole unit costs less than having a service technician replace a couple of parts on the board.
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    Topping D30Pro Review (Balanced DAC)

    I listened to a system with such a connection. Blu-ray player HDMI -> TV optical -> hi-fi DAC. The sound was more tiring than the sound from laptop USB -> hi-fi DAC in the same system. However, it was long time ago, when the jitter reduction in hi-fi DAC was not so good. Many years ago, a...
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    Topping D30Pro Review (Balanced DAC)

    Several years ago, I tested a Toslink In-Coax out or Coax in-Toslink out adapter from Amazon. It was not specifically for hi-fi market. It added quite much jitter when connected to a hi-fi DAC (analog output measured with Focusrite USB interface - I don't remember whether it was 2i2 or Solo -.).
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    your RME ADI-2 DAC FS drops one channel selectively?

    Thanks a lot for your suggestion. I posted questions on the RME forum. As the return period is short, I may return it before RME replies my posts. why haze from the factory? dropping one channel on some tracks
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    your RME ADI-2 DAC FS drops one channel selectively?

    I am testing my newly bought RME ADI-2 DAC FS. It shows "C" next to the serial number (ESS dac chip inside). There is a serious problem that might make me return this DAC. I already downloaded and ran the software installations (firmware and driver) from the RME web site. The DAC selectively...
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    [RME ADI-2 DAC FS] vs [Behringer DEQ2496 + pure stereo DAC]?

    Thanks all. He also noticed that Behringer DEQ2496 does not have a USB input. The RME ADI-2 DAC FS seems to have all the things he needs plus extra(e.g. headphone amp) in one chassis.
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    RME changes DAC-chip

    FYI, ESS ES9038Q2M newsletter had this: . . . previously only available in the PRO series of DACs . . . . avoiding the noise modulation ES9038Q2M Debuts in Vivo’s new Xplay 6 Flagship Smartphone . . About the ES9028 SABRE DAC The ES9038Q2M SABRE DAC is a high-performance 32-bit digital to...
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    [RME ADI-2 DAC FS] vs [Behringer DEQ2496 + pure stereo DAC]?

    Which one would be better? RME ADI-2 DAC or the combination of a digital EQ such as Behringer DEQ2496 and an ordinary 'pure' stereo hi-fi DAC? The person who asked me this does not want to use parametric EQ software on computer, because it would be inconvenient to turn on the computer every...
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    Topping D90SE Review (Balanced DAC)

    I am somewhat a measurement guy. I would play a 50 Hz sinusoidal tone and measure voltage with a multi-meter. I would even buy a multi-meter for just that measurement. At about 50Hz, the inaccuracy in voltage reading is not very big even on an inexpensive multi-meter from RadioShack. P.S.: In...
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    Review and Measurements of New Topping D50s DAC

    Thank you. I think mine is after some updates. Of course, there may be further updates after mine was manufactured.
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    Review and Measurements of New Topping D50s DAC

    Thanks. Yes, the PC display is accepting HDMI or Displayport. Yes, the cause is Audirvana. I thought I posted that the issue was resolved by editing my post, but I don't see it. Perhaps, there was internet connection issue when I edited my post. The cause is Audirvada's SoX upsampling. I had...
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