To Whom it may interest:
I am the very happy owner of a roughly 5 year old pair of 650's, and have enjoyed reading this thread very much. Being a former french horn player and continuing avid audiophile, I have a great deal of appreciation for the natural, mid-hall timbre/lushness that the 650's present. (This being further reinforced by my recent purchase of a pair of V-Moda M-100's for durable, portable music listening, if not frequency output accuracy...)... :-( ...
That said, I have driven my 650's with a 15+ year old "Traveller"(?) Headroom semi-portable amplifier...normally plugged into reg. 110v wall outlet. After reading about so many great amp/headphone pairings now available for the 650's, I would like to take a further plunge. Last year I broke down an purchased a Schiit Bifrost for both my main stereo system as well as these cans. I have debated between the Schiit Asgard, Lyr or even the Mjolnir, (the last necessitating rewiring of course), as well as even considering upgrading to the Gungnir in order to extract the last little bit, (pun intended), out of the Mjolnir/650 combo), with genuine future aspirations of owning a pair of Audeze "2's" or "3's"...
My main question(s) is/are what/how much of an audible difference can I expect to experience with the purchase of at least one of those amps, (if not a better D/A converter), and where is the best bang for the buck?...yes, I realize that this is a subjective question/answer, and welcome any and all input. Yes, I love the lushness of the 650's, and do not wish to forfeit that, but would like to improve on any and all qualities they possess. Ultimately, I would like to own even more extended headphones...hence the Audeze interest. BTW, what positive effect, if any, does balanced cabling/amplification have on the 650's?
Thank you in advance.