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  1. earfonia

    Creative Aurvana Trio

    There seems no thread for Aurvana Trio yet, so I started one here. My review for Aurvana Trio: https://www.head-fi.org/showcase/creative-aurvana-trio.23003/reviews#review-20066 I personally like it a lot. To be honest, this is the first IEM in Aurvana line that I really like. Didn't really...
  2. earfonia

    iFi micro iDSD Black-Label - In-Depth Review

    This post is the extended part of the review of iFi micro iDSD Black-Label posted here: http://www.head-fi.org/products/ifi-audio-micro-idsd/reviews/17934   Review Sections: Introduction, Summary, Pros, and Cons Sound Quality Features and Measurement     I wanted to post all of the...
  3. earfonia

    Brainwavz B200 - Dual Armature IEM

    Thanks to Brainwavz for the new Brainwavz B200 dual BA IEM! It is a wonderful new year gift from Brainwavz. Once again, many thanks to Brainwavz!   I received it a few days ago and only used it for a few hours by now due to the new year event. Short impression, it has a nice neutral tuning. I...
  4. earfonia

    EFRE: Earfonia Frequency Response Evaluation

    Tonality or frequency response is probably the first aspect that come to our mind when we evaluate audio gears such as earphones, headphones, and speakers. To accurately measure frequency response we need some skills, knowledge, and proper measurement tools. In most cases not a practical...
  5. earfonia

    Audio-Technica AT-HA22TUBE In-Depth Review

    It was during last year (2014) Audio-Technica event in Singapore, that I had the opportunity to audition the AT-HA22TUBE headphone amplifier. Tested it with a few headphones, I was quite impressed with the sound signature. Few months later, I get a unit for myself. I've started drafting this...
  6. earfonia

    Yulong DA8II In-Depth Review

    Sections: Summary, Pros & Cons Headphone Output       Sound Quality& Comparisons       On-Off Popping Noise       Noise Floor & IEM       Low Level Signal Noise       Power Output & Output Impedance       Temperature       Channel Imbalance       RMAA Test of Headphone Output Line Output...
  7. earfonia

    Audio-Technica ATH-R70x - In-Depth Review & Impressions

    Many thanks to Audio-Technica Singapore for the demo set loan of ATH-R70x! By the time i post this review, i have had it with me for more than a month.   http://www.audio-technica.com/cms/headphones/f39784ce643a82e6/index.html           Sections: Summary & Highlights Sound Quality...
  8. earfonia

    Creative Sound Blaster X7 - Detailed Review & Impressions

          Sections: Introduction and Summary Sound Quality Op-Amp Rolling Control Panel Features & Measurements   Review of Creative E-MU XM7     Sound Blaster X7 is an impressive multi-platform, all-in-one solution for music, movie, and gaming. As a USB DAC, X7 works with most of...
  9. earfonia

    Singapore - Audio Technica Offline Event - 29 Nov 2014

    Audio Technica Singapore informed me a while ago, about their new product launch event, at the end of this month.   They asked me to help them to distribute the invitation to Head-Fi'ers in Singapore, also for Head-Fi'ers from other country that happen to be in Singapore at that date. This is a...
  10. earfonia

    Review and comparison of DUNU DN-1000, DN-2000, & JVC HA-FX850

      These 3 IEMs are some of the best IEMs I've ever heard, regardless of the price. I don't have any particular reason for comparing them, just happen to have them, so i thought to write some reviews and comparison for these 3 wonderful IEMs would be interesting.   Both DUNU DN-1000 and...
  11. earfonia

    Review of Audio Technica ATH-CKR9 & ATH-CKR10

        Many Thanks to Audio Technica Singapore, for lending me the CKR9 & CKR10 IEM for review! I had them for about 2 weeks. Actually not long enough for me to do a very accurate review, but I will try my best    Audio Technica claims, that CKR series is the world's first IEM series to...
  12. earfonia

    Review of Audio Technica ATH-IM01, ATH-IM02, ATH-IM03, ATH-IM04, ATH-IM50, & ATH-IM70

    A very big THANKS to Audio Technica Singapore for lending me the whole 6 models of the relatively new Audio Technica Professional In-Ear Monitors, the IM series! http://www.audio-technica.com.sg/product_types/imseries/   (FYI, I’m not working for Audio Technica, or their affiliate.)    ...
  13. earfonia

    Input Ground Isolation on AC Dual Voltage Power Supply

    I've searched google and DIY section here a few hours, but couldn't find the solution I'm looking for. I would like to build a headphones amplifier, with AC power, using dual voltage power supply, with 78xx/79xx or 317/337 combo (or other regulators). Will use Transformer with center tap...
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