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  1. Schackmannen

    Verum , racist and vile please don't give him business.

    Here's some info about it all
  2. Schackmannen

    SMPS for Audio Applications

    A smooth capacitor? :p
  3. Schackmannen

    Measurements of RME ADI-2 DAC and Headphone Amp

    I leave it on because I like to watch the spectrum display sometimes :)
  4. Schackmannen

    Soncoz LA-QXD1 Balanced DAC Review

    @amirm Could you please do the multitone and THD+N vs Freq test?
  5. Schackmannen

    RME ADI-2 FS Version 2 DAC and Headphone Amp Review

    @amirm Just to confirm, was the 50 mV SNR test done with the IEM port and not the 1/4-inch output? It's mostly academic, but the IEM output should have lower noise than what the AP can measure.
  6. Schackmannen

    Measurements of RME ADI-2 DAC and Headphone Amp

    Maybe @MC_RME can shed some light on the issue?
  7. Schackmannen

    [No Politics] What you need to know about CoVID-19 by SARS-CoV-2 [No Politics]

    I don't know about you, but to me there is a huge difference between 1.3 million and 65000 deaths (factor 20 less). As to why it matters it's difficult to discuss without getting political.
  8. Schackmannen

    Measurements of RME ADI-2 DAC and Headphone Amp

    If I remember corrctly I experienced something similar with my ADI-2 DAC connected to the balanced inputs of my THX 789. When the amp was on and the DAC was off (red ring) I could hear a buzz, but as soon as I turned on the DAC it disappeared. Not sure why it happened, but it wasn't an issue...
  9. Schackmannen

    Jeff Rowland 535 Stereo Amplifier Review

    It's been a while since I watched the video and don't have time to watch it again right now, but IIRC the guy, who worked for AP at the time (and is a member here but forgot his username), mostly talked about specs that are not properly stated are pretty much meaningless, like if an amp is...
  10. Schackmannen

    New thread starter icon in the forum

    I definitely agree, and it's quite subtle as well so I can't really see it being that distracting.
  11. Schackmannen

    New thread starter icon in the forum

    Wow, had no idea this existed, thanks a lot for mentioning it! The default style is quite bright and definitely puts a bit of a strain on the eyes in a dark room.
  12. Schackmannen

    Article: Understanding Digital Audio Measurements

    Amir has posted the multitone test file before and IIRC the tones are generated so that none of them are an integer multiple of the others so harmonic distortion still show up in the test. I think the reason why the distortion sometimes looks lower in the multitone test than in the dashboard is...
  13. Schackmannen

    Review and Measurements of Benchmark HPA4 Headphone Amp/Pre

    Using $5k worth of electronics to power a $200 pair of headphones :p
  14. Schackmannen

    Has the Topping A50 headphone amp appeared yet?

    I don't know the value of the output impedance of the 2.5 mm port, but since it is balanced its output impedance should be double of what the output impedance of the SE ports is.
  15. Schackmannen

    WolfX700 Measurement of Topping A90 Headphone Amp

    Probably depends a lot on how the situation with the virus develops.
  16. Schackmannen

    Digital to Analog with 100% accuracy

    Here's a video that explains a lot of concepts about digital audio very well:
  17. Schackmannen

    Digital to Analog with 100% accuracy

    I'm far from an expert, but as far as I'm aware it's theoretically possible to convert a bandlimited analog signal to digital and back again to analog with 100% accuracy (Shannon-Nyquist sampling theorem), but in practice every real device will have some inherent noise and distortion that will...
  18. Schackmannen

    KEF Q100 Speaker Review

    That's a new expression for me, arguments being orthogonal to each other :D
  19. Schackmannen

    WolfX700 Measurement of Topping A90 Headphone Amp

    Wow, so around only 0.25 uV noise? That's absolutely crazy. Thank you very much for all the tests you are doing! So maximum unbalanced output power would be around 250 mW then? Also any rough ideas on what it will cost when released?
  20. Schackmannen

    WolfX700 Measurement of Topping A90 Headphone Amp

    That's absolutely crazy performance, must be at the limit of what you can measure. What does the AP get in the 50 mV SNR test in loopback mode? Also what's the maximum power output (or voltage swing) into 300 Ohm?
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