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  1. hifienthusiast

    Matrix M-Stage amp review: simple, cheap, and excellent.

    Quote: I am using a M-Stage with USB with my Sennheiser HD600. The USB section is good enough but it can be improved. I tried a Musical Fidelity V-DAC (mark I)which sounds clearer and more dynamic than the internal USB of the M-Stage. Instrument separation is better with the V-DAC.   I...
  2. hifienthusiast

    Review : AUDINST HUD-MX1 DAC/amp - a promising newcomer (compared to Audio-gd FUN, AMB Gamma2)

    I have been using a HUD-MX1 with my Sennheiser HD600.   Powered by the USB: The sound is congested and lacks dynamics.   Powered by the supplied switch mode power supply: Slight improvement in clarity but still not up to my standard.   Powered by a very old laboratory regulated...
  3. hifienthusiast

    Matrix M-Stage amp review: simple, cheap, and excellent.

    Quote: The presentations of the Stax and Sennheiser are quite different. The Stax gives a clearer, faster, more open and transparent sound. Its midrange is magical like the Quad ESL57 electrostatic speakers which I once owned. However it lacks bass weight and slam. The Matrix M Stage &...
  4. hifienthusiast

    Matrix M-Stage amp review: simple, cheap, and excellent.

    I had a pair of Sennheiser HD650 paired with a Musical Fidlity V-DAC (original version), Lehmann Black Cube Linear clone (non branded, bought from China) headphone amp last year which I didn't enjoy, mainly because I found the combination having a dark, distant and laid back presentation. I sold...
  5. hifienthusiast

    The "Lovely Cube" Headphone Amp (Lehmann Black Cube Linear Clone)

    The hum does not go away when I wiggle the signal cable, I have even changed the cable to make sure. The volume pot does not affect the hum, the level of hum is constant through the Quad 306 power amp and speakers.
  6. hifienthusiast

    Musical Fidelity V-DAC Owners?

    I found the blue LED of my V-DAC is much dimmer than the green one when there is a music signal to the DAC, are all the V-DAC the same like mine?
  7. hifienthusiast

    The "Lovely Cube" Headphone Amp (Lehmann Black Cube Linear Clone)

    There is no hum through the headphone outputs.   The signal cable is a good quality one made by Linn. Using the Linn signal cable, there is no hum from a Creek passive pre amp to the Quad 306 power amp.   My Blackcube clone was not made by myself, I will need to open the cover to find...
  8. hifienthusiast

    The "Lovely Cube" Headphone Amp (Lehmann Black Cube Linear Clone)

    The headphone output of my Blackcube Linear clone is silent but when I use the line output to my Quad 306 power amp, there is a constant hum through the speakers. What is the cause of this hum through the line output? Could it be the body of the Alps pot not being grounded properly?
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