After trying the ER4SR again after almost 3 months of using the ER4XR, I still view the ER4SR is much cleaner and the flatter bass is much better as I'm noticing moments where 4XR bass wither stock or EQ'd up starts cloud the mids/treble. I think I might keep the ER4XR as for moments where I...

I love how mad folk get that LAME MP3 at V0 is transparent on everything and even competitive with newer codecs. Song too hot at 22KHz? just use a 17KHz Low pass, Pre-echo/smearing even if mild? just use allshort with LAME 3.99(Dev versions).

Also It seems like /r/headphones and /r/audiophile are now attacking anyone who uses Lossy codecs in the most immature manner possible. Posted a thread about MP3 was called a moron for not using lossless or AAC, When I call them out I get left at -4.

I love how well LAME MP3 performs even at V2(192kbps VBR) towards AAC/Vorbis, I can't tell V2 from lossless 99% of the time when I do I just up the track to V0. What more ironic they never once cry about games using Vorbis/MP3 for sounds/music, DVD-video lasting 20+ years with AC-3 at 192k...

Somehow manged to get the ER4XR to mimic 2XR bass with the Speed/Detail that the ER4XR has.

That why I switched to Musepack at 175kbps since I've never found a sample that breaks --standard setting. Yet folk at HydrogenAudio love telling me that MPC at 170 ~ 240kbps should be easy despite never posting any samples/ABX logs especially at Q7(240kbps).

The very high detail on ER4XR could be unmasking recording noise that a DD would mask from It slow decay smearing the mid range. I've been using BA IEM's for so long I find even Dynamic speakers quite dirty sounding.

It why Opus codec uses 48KHz despite only holding 20KHz. The Musepack devs had a chart showing at 48KHz MP3 being more stable while at 32KHz it was much worse, Voice can trigger pre-echo if they use sharp sounds. In FLAC this Is a non-issue.

It forces MP3 to use it short blocks from longer scanning since the codec is basically 2 lossy models(Subband + MDCT) duck taped together, It allows the MDCT layer more time to understand what Subband layer handing over without It rushing. It not about forcing MP3 to do 22KHz.

The ER4XR average THD is 0.8 ~ 1.6%, Yet many state It sounds just as clear as the ER4SR and Planar that are <0.4% THD wise.

Doing 48KHz with high bit rate MP3 seems really help with problem samples, It probably the only case where up-sampling is a benefit.

Even Single BA IEM's like the ER4XR can hold up, Since It seems to have no issue mimicking the ER2XR's bass with EQ. I actually loved the ER2XR but the DD sounded like It choked when there was heavy bass and It got worse in faster music.

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You can do -2db at 150Hz(Q1.5) On both the ER4XR & ER2XR to have a sub bass focused sound.

The ER4SR pretty much like Planar/E-stat in that It like looking through a 100% clean window while dynamic's are dirty in comparison. On the ER3/ER4 guitars & drums sound separate but on DD IEM/Over ears they can blur into each other from a long bass decay.