I bought the TCL SOCL300 for around Rs. 400 ($5) from Amazon India.Continue reading “TCL SOCL300 – Rs. 400 ($5) earphone/IEM with mic”
Released in 1991, the ER4 was the world’s first noise-isolating high-fidelity in-ear earphone that became the basis of all subsequent in-ear earphones and in-ear monitors worldwide, creating an entire category of consumer electronics. 30 years later, the ER4 is still produced and while it’s changed over the years, it is still channel-balanced to within 1 dB by Etymotic.
If any earphone was to be considered the most significant in earphone history, it would be the ER4, the one that started it all. So I thought it would be interesting to see how it has evolved over the years.
On 1 Jan 2021, Etymotic announced they will be releasing a new multi-driver earphone, a first for them. Here is what we know so far about it.Continue reading “Etymotic EVO – What We Know So Far”
I had posted measurements (frequency response graphs) earlier for final A4000 based on my old rig. Here are the latest measurements based on v1.0 of my IEM Measurement Rig.
final A4000 Left and Right Channel Frequency Responses
3 samples each of the left and right channel. For each sample I remove and re-insert the IEM.Continue reading “final A4000 Measurements (Frequency Response Graphs) and Comparisons with Etymotic ER2XR”