[luisdent]

 
Dave, you were promising comparative FR measurements. 

OK, for fun I grabbed some early production data from the ER4SR and ER4XR units.  Below is the comparative graph.  As you can see, they are very closely matched in the midrange and high frequencies.  This isn't anything official, I just threw it together to give a general idea (because I promised Chris and others).

That actually looks like a pretty nice bass boost decision. Warmer than neutral a bit but nothing like most drastic curves. Can't wait. Mine just shipped! Baah!

 

[seanwee]

I shall be waiting for reviews and comparisons first!!!

 

[vapman]

I'm thinking I'm gonna do the XR instead of the SR now...

 

[sunwoo1213]

How much will be the price to upgrade old er4 to new er4? I bought er4b 2015 Dec... If I can, I want to pay and upgrade to er4sr

 

[Hardertaskthinking]

Hi Dave,

The Etys are great sound wise but their wires are notoriously microphobic. Do the new models promise significant improvement in this area?

 

[mgpyone]

Wanted to get SR and then I checked the shipping rate to Singapore ... 
 

 
I guess I have to wait until those are available on Amazon and get (free shipping). Bummer. 

 

[james444]

  Carbo Tenore's then?

 
Too easy. Obviously I can't know for sure, but knowing how the man loves his hifi, I have a hunch.

 

[HiFiChris]

 

  Dave, you were promising comparative FR measurements. 

 
OK, for fun I grabbed some early production data from the ER4SR and ER4XR units.  Below is the comparative graph.  As you can see, they are very closely matched in the midrange and high frequencies.  This isn't anything official, I just threw it together to give a general idea (because I promised Chris and others).
 

 
Thanks!
 
That XR looks indeed like it might please many of those who found the 4S to be a little too "boring" in the lows (not me) - mild boost in the root, climax is below 100, around 50 Hz, no spillage into the upper root/lower mids. That's a pretty nice tuning indeed. 

 

[Happytalk]

Anybody bringing these to Babylon?

 

[kubo]

I heard the original model before and was impressed. Order in for the ER4SR!

 

[vapman]

Woah... they're for sale already? I never saw the email!

 

[Snake07]

EtyDave, is this a new 8-13mm 3-flange eartips ? No more old grey triflanges?

 

[ER4S]

  EtyDave, is this a new 8-13mm 3-flange eartips ? No more old grey triflanges?

 
I guess it's clear 3-Flange.
 
http://www.etymotic.com/consumer/accessories/er38-18cl.html

 

[ClieOS]

Zero hints, it seems.

Just don't want to ruin the surprise.

 

[Traveller]

Hi Dave,

The Etys are great sound wise but their wires are notoriously microphonic. Do the new models promise significant improvement in this area?

I'll have to second that... weakest link in this otherwise great IEM!