Noontec Hammo S headphone unboxing, subjective impressions, and measurements. I initially made the stupid mistake of listening to these from a Lenovo headphone out. This was fatal. So I was under the mistaken notion that these headphones did not sound good at first. I didn't know how bad the...

Thoughts on a bunch of DACs (and why delta-sigma sucks)   This is a ranking of 17+ DAC and DAC configurations by my ninjas and I. These rankings are largely based on personal preference. They should be taken with a grain of salt. We have heard many more DACs, but these 17 DAC and DAC...

A Journey with Ultimate Ears By Marv Chen July 27, 2013   As I have an abundance of material, this recollection of my visit to Ultimate Ears (UE) will be split into a series of articles which will be released over time. I decided to name this series A Journey with Ultimate Ears because it...

Looks like Meridian fixed the output Z issue: http://www.innerfidelity.com/content/meridian-explorer-case-study-effects-output-impedance   Somehow, this little Meridian Explorer (ME) thing-a-ma-jig landed on my desk for an audition. I don't know why people send me crap (stuff), but I guess...

Putting up a SF Bay Area meet. CHANG-Fest, otherwise known as the 2013 California Headphone ANd Gear Festival Mini-Edition Brought to you by Schiit and Eddie Current.   OFFICIAL EVENT TIME: 10:00am to 4:00pm Open 8:00am for setup. 5:00pm is official close for tear down.   IF YOU ARE...

PETITION Bring Back the HE Audio Jades! (but with better build quality)   I actually tried to buy the Jades a while back and sadly I got this message from Head-Direct:   Dear customer, this product is discontinued, we will refund it to you. there will be successor electrostatic...

On the Ignore function: is it possible to improve this function?   Would be nice if ignore could make posts entirely invisible, instead of having placeholders in the thread where you can expand them. Eliminate the previews on the subscriptions of forum section home pages. <--- big one...

H3 Meet Impressions LA 8/18/2012 Thread   Mackat put together an impressive rig with a Sony TT, Jolida phono pre-amp, Bottlehead Crack, and an HD650. No veil and sounded pretty darn good.   More after I wake up.

Just posting some preliminary measurements regarding characteristics of different driver types used in IEMs: balanced armature and dynamic. Unfortunately, I only have a few data points: UERM, Shure e2C, and ER-4S. I really need more, but there do seem to be some very distinct patterns going on...

I captured the output from two different amps with the same headphone (HD800). The process to capture the waveform is indicated below:   PC--USB-->PS Audio PWD2 DAC-->[amp?]-->HD800--sound-->panny capsule mic-->ADC-->wavefile   Obviously a significant factor will be the quality of the...

I've discussed with peers whether this post belongs in the sound science forum or here, and I decided to post it here for the following reasons:   This study is really about the subjective experience first. And how objective measurements back up those subjective experiences rather than the...

HD700 Review (Purrin + LFF)   Introduction   Headphone meets are one of the best way to get to know how headphones really sound like. Both LFF and I have regularly attended meets. LFF was one of the organizers of CanJam 2009 and attended meets much more frequently in the past. I have...

I figured I should throw this up here since talk of the Electra will probably permeate through various other threads.     4x6SN7, 4x6L6   This will be at T.H.E. SHOW in Newport Beach this coming weekend.

There are a lot of big fans of this headphone, and I thought there should be an appreciate thread where we can discuss our merits of this headphone and what tweaks or equipment play well with it.   I've had a chance to hear a non-defective model, and I for one think this is a very good...

2012 Hollywood Headphone Hobbyists (H3) Meet also known as the Socal Headphone And Gear Festival or the "Big L.A. Meet"   design courtesy of LFF   Saturday, August 18, 2012 9:30am to 5:00pm LAX Hilton, Los Angeles, CA OFFICIAL THREAD   Please reply to this thread if you plan...

This is for the two to three people in the world who are interested in the mod to run PX25 tubes.   The Eddie Current BA in its current iteration runs PX4 and 300B tubes. The heater voltage is set to 4V for the PX4 and 5V for the 300B. In addition, there is a switch on the back of the amp...

This thread is a spin off from the CSD thread. Some HF'ers had asked that I take a non-linear distortion measurements (harmonic + intermodulation + whatever else.)   So what got me thinking is this hypothetical question: "What exactly does 1% harmonic distortion mean at 50Hz @90db?". Well...

THIS IS GOING TO HAPPEN!   Please reply to this thread - it's interest check and also to make sure there will not be any conflicts with other events.   I'm NOT going to place a large emphasis on vendors nor will I actively seek them out. But vendors are more than welcome if they somehow...

One of the things I never liked about the HP1000s was a certain shoutyness that they had in the midrange. I came up with an idea a long time ago after measuring the liberated drivers of the SR80: http://www.head-fi.org/t/566929/headphone-csd-waterfall-plots/105#post_7735041 I realized this...

I'm making a PX25 to 300B adapter from some parts I got from Ebay. Basically a PX25 socket and fits into a cup with a 300B pin layout.   Could someone confirm that that anode and and grid pins aren't reversed?  Thanks,  

Apex Arete Review   Holy crap, this is fine sounding amp. Having previously owned the Peak/Volcano, the most immediate difference was that the Arete is warmer sounding amp. This would seem to make sense because unlike on the Peak, we can’t swap tubes on the Arete. The slightly warm balance...

If you already like the way your LCD3s sound, you may want to go elsewhere, otherwise what I am about to post may offend your sensibilities of creaminess. . . . . . . . As I've indicated in other posts, I was hoping Audeze, having solved the resonance issues with the LCD3, would...

LCD3 Measurements Not putting this in the usual CSD thread. This concerns a LCD# which deserves it own.     HOW DO I READ THESE? Cumulative spectral decay (CSD) or waterfall plots measure energy content over time across all frequencies based on a "sound burst" that excites all...

Background   The following is a review and comparison of the Eddie Current Balancing Act and the Super 7. Craig Uthus of Eddie Current has been nice enough to lend Anaxilus and me the 2A3 and pre-production Super 7 for two weeks. Over this weekend, we also invited CeeTee down for a...

By request. It is based on the JaZZ and arnaud mods. I am calling it the Anaxilus mod because he just sort of slapped on what materials we had lying around: Creatology adhesive foam sheets. At that time, I was using a less effective version of this mod with felt, but decided to switch to the...