Merci Wardormeur, Charlo89 & Dobiwan pour vos réponses, et sorry pour le délai... Dobiwan, ce lien sur Head-fi, qui confirme tes dires :
http://www.head-fi.org/t/564742/hm-801- ... ier-module. En effet Hifiman commercialise un module d'amplification permettant d'associer au hm-801 les casques de la gamme He-.... Warp08 fait un compte-rendu détaillé de son match entre l'hm-801 équipé du module d'amplification standard dans sa dernière version v.2.0 et l'hm-801 équipé de la carte balanced amplifier module, test effectué notamment avec l'HE-500 (customisé, il est vrai). Comparaison dont il ressort que la carte bam apporte un plus indéniable :
1. Imaging. The difference is quite pronounced, especially with the HE-500Rs.
The spatial imaging is significantly extended along both the x and y axis;
the soundstage becomes both wider and deeper.
2. Power. While I do not recall the exact specs between the ST and the balanced module, the balanced module makes driving the HE-500Rs effortless. By that I mean it does so with a punch. A
ttacks are much sharper and even though the HE-500s are not the fastest cans on the block,
the overall dynamics are much more satisfying and more consistent with similar performance characteristics those of balanced desktop amplifier/source combos.
3. Instrument separation. The synergy between the neutrality of the HM-801 digital source coupled with the balanced amp module compliments the HE-500Rs midrange emphasis by slightly
flattening the performance curve and
infusing some extra detail between most instruments. This is evident in both reference recordings, but quite frequently surface during the Natalie Merchant “Tigerlily” tracks with acoustic guitar compliments. They are projected with a definite air around them, clearly distinguishable from the other accompaniments as opposed to somewhat fused in together.
4. Bass and treble extensions. The improvement in these aspect of sonic excellence is relatively minor, but I believe it is still there and worth mentioning. In essence, the balanced amplifier is able to deliver
cleaner, crisper treble and tighter bass with a slightly more pronounced, yet smoother texture without sacrificing midrange performance; a key selling point of the HE-500s.
Sorry, j'ai copié-collé sans traduire (de toute façon j'aurais pas su faire !). Néanmoins les avantages de la carte bam apparaissent de façon assez évidente.
Option intéressante donc, que cette carte bam...
, je le poste à nouveau, quoiqu'en le formulant de façon plus précise. Je voudrais savoir si le modèle he-500 d'hifiman pouvait être apparié à l'hm-801, pour une écoute du coup plus vraiment nomade, mais bon, de toute façon l'hm-801 est plus bédouin que nomade, alors... Est-ce que qqn a déjà tenté la chose ? bigtonio, david-sylvian38 (entre autres spécialistes ès-hifiman)... qu'en pensez-vous ?