Epilogue   For the few people left who have been reading this thread, let me summarize a couple of points:   When I first started the project, I was looking to do a variation on the ER4s. Even if it sounded the same, but was more comfortable, it would have been a gain. Comfort wise, this...

V. How does it sound?   The tangibles   Having seen the frequency response, many reader should be able to infer the tangible outcomes. This IEM is about 5dB hotter than the ER4s between 2-11kHz. As such, the presence region is a lot more emphasized. One could say that the signature now is...

IV. Measurements   At first, I was going to audition and make changes on the fly. I quickly realized while I can pick up the differences, I couldn't tell with enough certainty what I needed to change. I needed a way to measure the frequency response at the very least. But without some fancy...

III. Construction Notes   Disassembly   The metal shell is merely glued together, no hinges that need to be popped. However, two forceful pliers are needed to separate the glue. The trick is finding the suitable ones that don't leave any scratches behind. The dynamic driver in the shell is...

The Design First, the components: The drivers: I considered all possible drivers from the start. Sonion struck out because they are too hard to obtain stateside. Knowles has an excellent line of drivers, and initially I pondered if an integrated dual driver such as the GQ series was the...

Reserved 2.

Current thread status: completed.

I. Intro   I have had the the Etymotic ER4s for the longest time. Back then, it was considered insane to spend $300+ on headphones. It was before IEM were considered "cool", as most people didn't know what it was. And up till today, they were "good enough" for me. Good enough that I spend my...

Hi, This is my first post after a long absence from this hobby. Cmoy reported at Headwize on my Morgan Jones amp years ago. Since then, I have built many amps,but what I care a lot is have the headphones sound more like speakers. I loved my Sennheiser DSP Pro amp module, because it could get...