After a weekend of auditions, my conclusions about the Arrow have changed greatly.
The Arrow is extremely neutral and amplifies the signal in a very clean way, so leave all the qualities, characteristics and defects of the player in evidence. And this was the problem I was facing, right after receiving the amplifier.
Depending on the settings used, the Cowon J3 is a very precise and detailed player or, as some say, analytic. And as the Arrow is, as I said above, neutral, it also amplifies this precision and detail characteristics, and with some headphones, the result is an unnatural sound, or even, very digital.
So who uses the Arrow with the Cowon J3, a warning: Be careful with the BBE, MP Enhance and Stereo Enhance options , as these options has the feature of letting the sound more clear and analytical, making the sound much digitized and unnatural. Already, the lowest options leaves a neutral or warm sound. Thus, with the Cowon J3 + Arrow setup, it is important to get a setting that is not overly bright or too hot and boring. The balance is very welcome.
Result of tests for some headphones
SE530 + J3 + Arrow (Bass: 0; Cross: I; Gain: I; Imp: 0) - After messing up with the Cowon settings for this headphone using the Arrow, is gone the feeling of aggressiveness that this setup provided. What I found is a full sound with good soundstage and musical image. The problem was a very digital sound to my liking, and after some attempts in equalizer/BBE effects, a dark sound. I'm still looking for the best EQ for this headphone;
DBA-02 + J3 + Arrow (Bass: I; Cross: I; Gain: 0; Imp: 0 or I) - I got this headphone, after much waiting and fighting, at the end of last week. This is the setup where the Cowon J3 works as closely as possible on flat settings, including the MP Enhance option in off. The amount and quality of detail in this headphone is impressive, with good aeration and soundstage, although this is not very accurate, hindering the construction of the musical image. The bass, with proper equalizing and the use of bass option in Arrow, are quite well defined, dry and fast. The mids have good tonal timbre and treble are clear and extended. This headphone is a kind of cousin of the Ety ER4, with a sound signature directed to the detail, however, makes it in a competent way.
Ety ER4 + J3 + Arrow (Bass: 1; Cross 0; Gain: I; Imp: 0) - Once past the shock of the DBA, I believe the Ety ER4P + P to S adapter is the best headphone for this setup. To give you an idea, this is a dark headphone in comparison with the DBA-02... So the first thing that draws attention in this setup is the elegant way in which the detail is delivered to the listener. While the DBA-02 delivers the details without any ceremony, the ER4 does this by creating an excellent sound stage with a convincing musical image, a slightly warm sound signature. The ety creates an conducive and relaxed atmosphere to delivery his details
Now, an explanation: The best option with ER4P is the use of P to S adapter, than using the impedance option on the Arrow. To me, at least. With the adapter, the musical image representation is much more focused and precise, as well as the correct extension of the soundstage. Moreover, the impedance option on the Arrow, without the P to S adapter, left the sound too far away, with the musical image and soundstage too much vague, unfocused. This, to me, is the difference in sound between the adapter and impedance option (position II) in the Arrow, that is, in the end, only 10 ohms...
Still not finished... :O) It is worth mentioning the excellent crossfeed function in the Arrow. With it enabled, the sound is much more natural and engaging, the sound takes off his ears and is floating above his head. This option is essential that those phones have some difficulty with the maintenance of the musical image. On the other hand (and there is always some...), the quality of construction of the musical image of the Ety's is so good and real that I leave this option disabled when I'm listening.
Sorry about my bad english...
Cheers,
Peter