Quote:
Originally posted by MacDEF
Sov, this is similar to what I talked about before with cables -- of course they're not going to say "this model requires an amp," because, as you pointed out, not everyone has an amp, so the model wouldn't sell well. It may be dishonest, but that's the way it goes -- it's product marketing.
However, a company like Sennheiser has a huge range of headphones, so they can make a "flagship" headphone that isn't limited by requirements like "works well with MP3 player headphone jacks." A 300-ohm headphone is clearly designed to be used with a lot of power and, in fact, several people on Head-Fi who have talked to engineers at Sennheiser have said that they were told the HD 580/600 were designed to be used with an amp (or, at the very least, an out-of-the-ordinary headphone jack). |
Some headphone jacks of amps sound pretty good, MacDEF, BTW, do not understimate them with this "theory" of the afterthought jacks, many amps have not afterthought jacks, and many even being after thought, my amp two Audiosource is one of them (not a dedicated, is an afterthought indeed) sound very good, better than some headphone amps, MGHead included, IMO if the amp is a good one, two resistors coupled at the output, if they are of good quality, IMO will not affect the sound quality that much, I was talking with the AudioSource Amp Two designer and according to him, the output impedance at the jack is 0.01 ohm, almost 0, it drives pretty well the HD600 and the CD3000, both, what happen is also that most of the amps nowadays really suck, I have owned some of the comercial brands around, as I can't afford a really good one, and the sound is horrible, but look at mark's Denon, fine amp...right?
The same people who have told that the Senns was designed for an amp "under the table", probably have said also that it was designed to be driven out of a 0 ohms jack IIRC, so it doesn't matter if is 300ohms impedance it was designed to be driven with low impedance amp....that is why it sounds pretty good out of the RA-1, again that is what I have read here, not sure though, not a high impedance amp.
The R-10 IIRC was designed (and this is answering to another post) with a dedicated amp in mind, they create a whole line of -10 products including a headamp, not very common, and IIRC not a big deal of an amp neither....