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Wednesday, July 31, 2013

Aurisonics ASG-2

Disclaimer: I thank the owner, UnityIsPower, for letting me analyze his precious gear. Measurement has been made with the bass-tuner set at its minimum.

Aurisonics ASG-2 is a hybrid IEM, featuring a dual-driver balanced armature tweeter and a ⌀15 mm dynamic woofer, just like T-PEOS H-200. Moreover, the IEM has an adjustable bass-tuner on its faceplate. According to eke2k6's review, this IEM doesn't have a passive crossover network implemented in order to avoid any kind of unnecessary complication arising from electric impedance interaction.

Now that's quite a bold move, considering the fact that three transducers are coupled together.. And since Mr. Dale Lott, the founder of Aurisonics, claims ASG-2 is tuned with their reference sound signature but treble further enhanced, the hope is higher than ever! But then again, one of my visitors says:


PRO: Sleek look.

CON: All the others including unstable impedance characteristic, unmatched woofer response, short bandwidth & non-linear frequency response. Moreover, unlike what the engineer has stated, there is no treble.

ON SECOND THOUGHT #1: The bass-tuner is very crudely designed; it does not restore the sub-bass at all. Rather, only the mid-high bass is amplified up to 15 dB, causing an audible ringing of the driver. 

ON SECOND THOUGHT #2: Insertion depth plays a major role with this IEM, especially in the treble. Fortunately, shallow insertion yields less harshness.

ON SECOND THOUGHT #3: Due to its highly skewed impedance characteristic, ASG-2 is prone to electrical damping. 

ON SECOND THOUGHT #4: Acoustic damping helps tame some of the peaks in the high frequency range.

ON SECOND THOUGHT #5: The vent located on the side of the housing works only as a depressurizer.

ON SECOND THOUGHT #6: Aurisonics ASG-2 is far far away from Harman's reference target. No, my friend. The sound quality of ASG-2 is not of a radio. It's rather of a telephone receiver.


  1. Ummm... I was going to say "broken radio"...

    That being said, I don't think there is any way to weaken head-fiers' love of Aurisonics. Don't remember who said this, but someone commented on one of the hype threads saying that even CCP should be jealous. Never see that kind of blind (deaf) devotion before.

    1. Ouch Rick, that's even harsher LOL
      Now you said it, I'd love to analyze ASG-1 too!

  2. 저건 다이소이어폰에서나 볼수 있엇던.... radio!

  3. ouch..i got asg-1..sound like..well .. i like it..btw rin, do you know how to modify this to well..eerr hmm behave better :-)

  4. I think you've all been too harsh here. Equalize the ASG-2 closer to neutral (yeah its a bit of work) and you get a very decent sounding IEM with some of the hardest hitting bass slams in an in-ear. Treble quality is still not "excellent," but far from a broken radio or whatever.