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January 19, 2007 - 8:17pm
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universal player with external power supply
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Why do you want an external power supply for your player? I think this is going to be hard to find.
When I look in most high end players and transport the electronics are nicely spaced. But even with the powersupply(i.e. transfomer) as far away as it can be still produces a large electromagnetic field.I don't want any EMFs around the audio electronics for fear that the transformer can add its own signature to the music. For instance ,if you have a compass, hold it about 3 feet above your computer's powersupply;slowly bring it down closer to the supply once the needle starts to deviate is where the emfs of your supply are strong enough to influene your compass. For instance my computer supply affects my compass at about 6 inches.And guess what my ceilling fan affects my compass at about 4 feet!!!careful where you put your components.I believe a good idea is to go around a listening room with a compass and find where it deviates from magnetic north,and place equipment accordingly. my sub had a radius field of about 5 FEET!!!! Am I wrong? I don't see many things with out board power supplies,I must be missing something.Why exquisitely crafted components don't outboard , I don't know. Tubes I heard are more affected by this than solid state.Maybe thats why ,but still.
Holy moly.......this needs medicine!!!!Better move teh wires in teh wall, better keep the loudspeakers, away from themselves? What da' FLUX?
YOU NEED FURUTECH!!!!! I'm sure they can demag your world!!!
Very reasonable thoughts. There are some very high end components that have external power supplies, but not many. Manufacturers and designers put a lot of effort in protecting sensitive circuits from stray fields. Given that even high quality microphone preamps (ver delicate signals) often have built in power supplies I wouldn't be too concerned about this as a criteria.
BTW, I use a Grace m902 on my digital audio workstation both as a DAC and as a headphone amp. It is a wonderful unit in both applications.
I went to the furutech web site and swisssh that went over my head like an sr71 trying to get out of russain airspace.I am going to look more into it though.
Elk , do you know the names of the manufacturers you mentioned? Yes I realize it maybe going overboard but thats what it is all about for me.Some background, I am designing my final resting place, and in it I was going to put a home theater/listening room built to my expectations.It was going to cost me about 80g to get it where I would be satisfied but with room acoustics and all manner of voodoos, good sound(i realized) started to become more subjective with less of a chance for accuracy.And that price was with using moderately priced components.Remember this was going to be a system for a lifetime. So now, I am going to be relying on a headphone system for the most pristine and scaling back my home theater to normal levels of about 5 to 8 gs.And I will still have money left over to feed hungry people in Africa(I not joking so please don't blast me for making fun of them
AS for the 902, I hope to go to a headphone meet to try out what is available. why did you choose it over the competition?
Unrelated but I thought it would be appreciated
Solid State Marvin
There are many cd players and transport/dacs with external power supply but never saw a universal player with one.
The only manufacturer who makes one (at least,the only one i know) is Townsend audio from UK.
Once I started thinking about it I realized that I don't know any universal players with external supplies, just CD players. Sorry.
External power supplies can indeed help so it is worth considering however. I have a microphone preamp (Avalon AD2022 - Dual Mono Pure Class A) with an external power supply. The recordings I make with it are crystal clear and *quiet*. I haven't heard another mic preamp this quiet and this fast - although I am sure they are out there.
I bought the m902 because it is both an excellent DAC and superb headphone amplifier. It can drive just about anything, lots of digital connectivity, analogs and ins, ability operate as a preamp as well. It is an amazing device. The Benchmark DAC-1 is an excellent option for a similar device. I also have a Single Power tube headphone amp which has a different sound than the Benchmark. Both are excellent, but each is better in its own way. Start another thread about headphone preamps or DACs if you want other opinions on these issues.
(Ignore DUP. He is our resident troll. What he is ranting about is irrelevant to your question. He uses every thread he can to rail against those things he doesn't like - such as specialty cables. I have no problem with him but one needs to know his agenda so that you know whether or not to listen to him.)
That Townshend specs looked truly awesome, soon as I get to the source stage I will have to check to see if I get it in 110vac.I was rereading the reviews on the 902 and destop and yeah it makes sense that you use the 902 being that is designed for a creating. MY ears will have to be the judge.
anyway, this is related to this thread in that I found this in John Atkinsons measurements of the desktop-----
"Channel separation was better than 85dB in both directions below 1kHz (fig.2), but decreased with increasing frequency due to capacitive coupling. Background noise levels were very low. However, placing the Desktop atop the power supply is not a good idea, as this injects 60Hz and 180Hz spuriae. I got the lowest noise with the power supply to the side and about 2' away. "
Thanks all,
Oh, as for the single tube amp, what was the manufactuer?That will be it for me talking about amps in this thread sorry!!!
The manufacturer of the tubed headphone amp I have is "Single Power". www. singlepower.com The way I wrote the sentence this is not very clear.
There is no problem with you mentioning headphone amps in this thread (in my opinion) as it is your thread after all! My thought is that if you start another thread on the topic of headphone amps you will likely get more responses.