Articles

  1. Headphone Power Calculator Spreadsheet

    Here's a Headphone Power Calculator spreadsheet: You input your headphones' impedance and sensitivity (in either dB milliwatt or dB volt and it calculates the other sensitivity value). It also calculates the power and current at 1 volt rms. Input a target loudness and it'll give you the power, voltage and current required to get there using your headphones. You can also input an amplifier's Vrms rating and it'll give you the max headphone loudness and the power required to get there.  ...
  2. Headphone-to-Speaker-Amp Interface With Switched XLR + 1/4" TRS + 1/8" TRS

    The Robinette Box   Front panel features balanced 4-Pin XLR, 1/4" & 1/8" single-ended headphone jacks, 'Amp Mode Switch' and optional oscilloscope out BNC connectors.   The Robinette Box© is a headphone to speaker amplifier interface box which will connect just about any headphone with any amp (tube, solid state, balanced, single-ended). It's designed to electromagically match your headphones to a speaker amplifier's speaker output. Jump down to the Instructionsto see how the box...
  3. Headphone Resistor Network Calculator

    I have created a JavaScript webpage calculator and Excel spreadsheet that will help you optimize a headphone resistor network interface for your headphones and your speaker amplifier.  Instructions A headphone resistor network interface helps to electrically match a pair of headphones to a speaker amplifier's speaker terminals. The resistor network used on this page is the most commonly recommended headphone-to-speaker-amp resistor network interface. 1. Input your Headphone's Impedance...
  4. Ibasso DX50 FAQ

    The Ibasso DX50 is a $239 baby brother to the $830 DX100. Smaller, less powerful, with less onboard storage (8gb vs. 64gb) and using a Wolfson WM8740 24Bit DAC Chip opposed to the ESS Sabre 9018 desktop-class DAC chip in the DX100. However, with a nice onboard amp and a crystal clear analog lineout, the DX50 is quite a bargain and flying off the shelves. Lots of owners means lots of questions, answers and useful tips. This FAQ is created as an attempt to answer some of the most common...
  5. Group Buys

    November 24, 2014: Since they are now a product reseller and I know we'll get asked about this frequently, discussion and linking to Massdrop's sales is allowed. However note that some of their sales appear to be unauthorised by the manufacturers (ie: are illegitimate group buys from dealers) who have stated that they will not warrant the items. In general, group buys and group builds (of DIY products) are not allowed, except for hard-to-obtain DIY parts or special DIY one-offs (such as...
  6. Senheiser HD 429 Bass Mod (*repost and redo )

    I brought this over ear headphones around 3 months ago. This Senheiser HD 429 bundled at exactly IDR 800.000 or around $80-$82, a mid class headphones that I buy because of curiosity and I’ve been longing for over ear headphones around that budget as well.   I am quite comfort with the sound quality actually, but I need a little bit power in it’s bass. Recently I’ve found article in the forum that it is possible to do a bit modification to the bass. So, I did just now. I got an extra...
  7. Groups Guidelines

    The purpose of social groups is to allow members more freedom and control over regular discussion with friends or people who share similar interests. However, while members are free to create groups and manage them as they wish, there are some limitations as to how they can be used, depending on the type. Quick Guide: Groups can be created by anyone who can create classifieds, that is members with 15 posts who have been a member more than one month. If you have just made your 15th...
  8. Hisound Firmware and Directions

    Hello guys Jack from Hisound just provided me with the updated Studio V and Rocoo P/BA firmwares as well as directions. I decided to make a faq page as it will give others the ability to add updated firmwares and such regarding Hisound products in a centralized area.   Update: Guys I'm being told now that there are some compatibility issues with larger files types (FLAC and I'm not sure with WAV) as well as the files not showing up in alphabetical order. So just letting you know. I'm...
  9. colorfly C4 pro Player Media Format Support List

    Hello, A lot of C4 lovers ask me about what format C4 support. Now all formats and their specifications are listed below. 1 WAV Format 1)PCM / PCM_ FLOAT Sampling rate: 32Khz-192Khz BitsPerSampe: 8/16/18/20/24 Bit 2)IMA_ADPCM / MS_ADPCM Sampling Rate: 32Khz-48Khz BitsPerSampe: 8/16Bit 2 APE Format 1) Sampling Rate: 32Khz-48Khz 2) BitsPerSample: 16 Bit 3 FLAC Format 1) Compress: Q1- Q10 2) Sampling Rate: 32Khz-192Khz 3) BitsPerSample: 16 Bit 4 MP3 Format...
  10. The ClieOS's List

    This is my list of IEM ranking, originated from my Concise Multi-IEM Comparison that has been discontinued and now stands as a simplified independent list that will continued to receive update. Scroll up and down for ranking, left and right for sound signature. Note: This is only a personal assessment and far from be-all-ends-all of a guide. It should be seen as as starting point of your own research, rather than an easy workaround that could cost you more down the road. The fact is, there...
  11. Syncing music and making playlists work with the Astell & Kern AK100 or AK120 and a Mac.

    I figured out how to create playlists on my Mac and put them on the original AK100. It's a bit of a PITA but it works.   October 30, 2015 update: New method NOTE: This has issues with what happens when files are dragged into the terminal and needs a bit of tweaking to work properly.   1. Export playlists of music that you want on your AK100 or AK120 from iTunes. Select a playlist and go to File > Library > Export Playlist... for each file and put them in a single folder (directory) with...
  12. Mac OS X Music Players - alternatives to iTunes

    There seems to have been an explosion lately in "audiophile" music players for Mac OS X lately. Though iTunes wiped out the need for competition when it was introduced, it has become a huge, multimedia and store program, leaving many people wanting something simpler.  For a while, that was Play and one or two others, but then Amarra came on the scene. Offering higher-quality playback, it has become famous among audiophiles, alongside its biggest competitor, Pure Vinyl (and now Pure Music). ...
  13. STAX SR-007 (Omega II) ... A Review After 4 Years Of Ownership - darth nut's epic review.

    [This review was originally posted in 2003 on Head-Fi. Darth nut is a psychoacoustician and his review is considered to be the most epic headphone review ever written. While the detail he goes into psycho acoustics and "headstage" are too overwhelming for most people I believe his write-up would deserve a place in Head-Fi's Hall of Fame, if we had one. I've re-formatted it so it fits in the forum better. -- Currawong.]     STAX SR-007 (OMEGA II) … A REVIEW AFTER 4 YEARS OF OWNERSHIP ...
  14. List of lossless and high-res music (FLAC, ALAC, AIFF, DSD, DXD etc.) download sites

    People regularly ask about where to buy CD quality or hi-res downloads (legitimately!) so here is a list of sites I know of. Please post a comment if there are any I've missed. Note that they must have music available in a lossless or high-res format available. Format guide: CD Quality = 16 bit, 44.1 kHz PCM. Hi-res = Any of 24 bit; 44.1, 48, 88.2, 96, 176.4 or 192 kHz PCM. DSD = Direct Stream Digital ie: SACD-type files that requires special playback software that can convert the files...
  15. Beware of the following scams and people abusing the classifieds

    If you believe you have been scammed by someone, please report the classified or the first PM message (you only need to report ONE). Click on the red flag bottom left of the post or PM. Please do NOT PM a moderator or administrator. Flagging the post/message sends it to ALL moderators and administrators at the same time. We will then contact you if necessary. You can leave negative feedback on their profile which can be edited or deleted later if necessary. Click on their user name and...
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