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[Official] OCN Headphones and Earphones Club - Page 57

post #561 of 37799
Check the little tube preamp I demo'd today.

It's my roommates and I swiped it from his living room rig to test since I had a day off today:

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I'm not really sure of the make or model, so I'll just refer to it as AOIN ... and BTW ... I took that little clampy thing off the tube before testing, not sure what it is supposed to do but just wanted to the tube and no other affectations.

This was how I ran the connections:

Zen Vision:M Line OUT > AOIN Tube > Practical Devices XM4 AMP > Shure e4c's ....

Had to use some crappy mini plug to RCA to make the connects with the AOIN tube preamp but I was still quite surprised as to the difference in sound it made ...

I focused on some fairly jazzy stuff, Morphine's "Buena," from their "Cure for Pain" CD, which has really nice levels of both bass, crisp high hat taps, intermittent acoustic riffs and some seriously nice sax work ... all going on at the same time but along their own definite and different lines (IE > every instrument had a different line/progression and weren't all playing the same thing).

What I found amazing about the addition of the tube pre amp, first and most noticeably was the definite warmth and thickness it added to things ... especially evident in the sax solo around 1:44. Just a real nice warm fuzz but nothing unnatural. Side by sides against just the Zen/XM4 setup made it quite obvious.

Also, and most surprising about the difference when using the tube pre amp was that the instruments became hugely more separated, far more articulated as individual players in the song ... why this is, I have no idea but the instruments were much more individuated.

The highs were a tad more crisp but the bass lost just a tad of it's punch (nothing negative really but slightly noticeable)

Switching back to the Zen/XM4 setup yielded a more 'medicinal' sound, if you will ... not unpleasant, really, just not as 'life like' and listenable as with the tube addition.

With the tube in line, the music was less fatiguing and all around more listenable/enjoyable at higher volumes ("non-fatiguing" = can listen at higher volumes without wanting to squint your eyes or clench your teeth)

Finally ... the other most noticeable change was quite a bit wider soundstage than just the plain XM4 amp. Really pleasant.

I kept switching back to the plain XM4 and the more I listened the more the above descriptions became evident.

It really took quite a bit of listening and switching back and forth before I could really hear the differences in detail.

Anyway ... I'm going to have to find a decent tube pre-amp/amp now.

    
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post #562 of 37799
My lil amp has shipped from China so it shouldbe here in time for the B-Day.

I wonder if that thing on the tube in the pic is like a choke or something to filter out RF?
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post #563 of 37799
wow... im surprised a pre-amp made that much of a difference... doesnt reeally work the your 'portable' rig though

the thing on the tube could just be to make sure it doesnt break if something bumps into it... idk
post #564 of 37799
Quote:
Originally Posted by CyberDruid View Post
My lil amp has shipped from China so it shouldbe here in time for the B-Day.

I wonder if that thing on the tube in the pic is like a choke or something to filter out RF?
According to my roommate ... the vertical position of the clamp supposedly will affect the tonality of the output ... but I didn't want to mess with it.

@Kevg73 - I was surprised as well. Sound stage and separation was the most pleasing changes. Sound stage is important to me as I use those Shure IEM's and anything that will 'get them outside of my head' is appreciated.
    
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post #565 of 37799
Beyerdynamic DT770 Pro 80's

Im in!
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post #566 of 37799
Quote:
Originally Posted by DJ.BigBear View Post
btw i need suggestions on headamp... which is suitable for both ATH and Denon headphones....
got any suggestion?
It's about time...
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post #567 of 37799
So what are the most expensive set of uber cans so far listed on the first post?

    
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post #568 of 37799
I want gs1000's


just thought I'd say that
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post #569 of 37799
yeah tubes are great! a lot of people will go with a tube pre-amp or tube output cdp or whatever then a ss amp, but I really like my tube amps! tubes and silver are a match made in heaven!!!! tons of detail yet warm and inviting.

the deal on the tube is called a tube dampener... it won't make any negative changes.
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post #570 of 37799
Quote:
Originally Posted by s1rrah View Post
So what are the most expensive set of uber cans so far listed on the first post?

I'd say it's a tossup between 003's Grado HP-1000s and the several DT990s.
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