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  1. MLGrado

    I think I found 'my' Holy Grail 12ax7 tube.

    Bought an Icon Audio amp back in February based on the Leak Stereo 20 design.. the Icon Stereo 20PP.  The beautiful thing about this amp is it nicely pulls double duty in my bedroom system as a headphone and speaker amp.  The headphone output comes straight off the output transformer's windings...
  2. MLGrado

    Noisy USB Bus. High Frequency content at the USB Data rate. Solutions?

    Hi all.     I have a custom built AMD PC built on an ASUS motherboard.  My DAC is an iFi iDSD Micro, with the iUSB Power and the dual headed Gemini USB cable.     Here is the problem.  I get a slight high frequency noise upon playback.  You have to get within a foot or so of the speakers...
  3. MLGrado

    iFi iDSD Micro DSD512 / PCM768 DAC and Headphone Amp. Impressions, Reviews and Comments.

    Hello all.     I just took delivery of the iFi iDSD Micro Digital to Analog converter/ Headphone Amp.     http://ifi-audio.com/portfolio-view/micro-idsd/       Over the next day or two I will be posting a complete review. (REVIEW NOW POSTED BELOW)  In the meantime I may be adding...
  4. MLGrado

    Grado RS1i breakin

    Hello everyone.  I have been an RS1i owner for about two months now.  Before that, I owned a set of 225i's...   The RS1s were very disappointing out of the box, compared to a pair of well used 225s.  The sound of the RS1s changed dramatially over the course of the first 10 hours or so, and...
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