External hard drives and sound quality

Larry_s is correct.

People can believe what they want but there is no technical basis for it.

If you hear something different it is either a placebo effect or something other than the hard disk being external versus internal is responsible for it.

That's about all that I can say with any certainty.

Oh, and also that I am sure that there is someone out there willing to sell someone who believes different disk drive technologies sound different a very nice sounding audiophile grade hard drive for a very reasonable premium as well. Then you can be rest assured that only the best sounding disk drive technology has been introduced into your system.

People can believe what they want but there is no technical basis for it.

Just because you can't come up with a technical reason why doesn't mean it isn't true. It looks to me like you are dismissing something you don't fully understand. Are you a hardware and software engineer well versed in this technology? Have done extensive research and explored every possible reason why changing a component could in any way affect the operation of a computer system and scientifically proven that it does not or could not affect the sound? I can think of many possibilities, increase or decrease in RF levels, different load on the power supplies, difference in the timing of operations caused by the need to service another device, etc. Until all of these reasons and more have been thoroughly explored and discounted there is no "technical basis" for dismissing the possibility that it has an effect.

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"Are you a hardware and software engineer well versed in this technology?"

As a matter of fact I am.

I would not say it is not possible for the integrated computer and hardware software as a whole to have some effect on resulting sound in certain cases, only that external drives inherently sound no different than internal ones. In fact, there is no sound at all until the bits hit a DAC somewhere.

Various aspects of computer hardware and software can and do affect the DAC process for sure, but using an internal versus external drive in of itself alone is not one of them, so there is no reason to categorically steer someone away from an external drive in the interest of better sound.

Mapman - Name brand of the drive is also very important. Names starting with sibilant like Seagate or Sony will bring more sibilant sound (logical) while name brands containing word "digital" - like Western Digital should be avoided at all cost (we all know what digital does to music). Word of caution about Maxtor. On the surface it looks OK but after closer look we learn that Maxtor bought HD business from Quantum in 2000 that bought HD business from DIGITAL Equipment Corporation in 1994. Again digititis could attack our system. One cannot be too careful. It is all perfectly logical but if you don't believe me, let me quote Herman's post:

"but I am saying it is impossible to predict what effect something will have on a system without trying it."

Assuming you really are, it still doesn't refute any of what I said. If you are not it lends less credence to your position but once again, you can't prove a negative by focusing on one aspect of a problem.

Have you done extensive research and explored every possible reason why changing a component could in any way affect the operation of a computer system and scientifically proven that it does not or could not affect the sound?

I think I've made my point. Unless you can prove it does not then the possibility exists that it does no matter what you choose to believe.

Happy listening.