FX Audio TUBE-03 Preamp Buffer
FX Audio TUBE-03 Preamp Buffer
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38 Sold
Product Description
An inexpensive addition to your hi-fi system, the FX Audio TUBE-03 aims to add a pleasant amount of color and warmth to your music. Compared to a previous model, the TUBE-01, this preamp buffer features new bass and treble dials that allow you to fine-tune the sound to suit your preferences Read More

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RayF
11966
Aug 2, 2018
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One word: Witchcraft!
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Aug 2, 2018
TonyRizo
150
Jul 31, 2018
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I have the Nobsound of this one chained as a preAmp of course to the class A Little Dot Mk2 and it adds that little extra bass I look for in my hd600. Just perfect. No distortion.
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Jul 31, 2018
Davestef
113
Dec 16, 2018
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That’s no the 600 in your photo
Dec 16, 2018
TonyRizo
150
Dec 16, 2018
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No but I have them and the 5xx and the hd579 too. The hd700 I returned, the sound stage was so huge it destroyed the music.
(Edited)
Dec 16, 2018
dnogs
37
Jul 31, 2018
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To understand the merit of this thing, you have to realize it is NOT an amplifier. It is a buffer. Meaning, all it does is pass a signal through a tube with almost no appreciable amplification. The catch is that it is preying on people thinking that simply having a tube in the chain is what makes the sound better. That's not the point. "Adding warmth" or "adding color" is not the point. The point of a tube - what makes it better for audio than a transistor - is the way a tube distorts when it amplifies a signal. Yes, the even-order distortion produced by overdriven tube circuits is more musically pleasant than the odd harmonics produced by an overdriven (clipping) transistor. (you can google using terms like "tube transistor distortion odd even harmonics" to better understand this)
If you're not amplifying the signal with the tube, there is no point. You're just adding the distortion inherent to the tube to whatever else in your chain you're already using to amplify. So if you're not REPLACING a transistor with a tube for the various steps in your signal chain, you are not gaining sound quality, period. In the case of this thing, you're also adding the distortion of an extra volume knob, and the bass and treble controls.
Jul 31, 2018
JWolters
16
Oct 24, 2018
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likely because your headphones are more sensitive than speakers
Oct 24, 2018
kasyx
11
Oct 24, 2018
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Yes, that's clear, there is no comparison to e-stats. What I meant is that it's interesting that though there is a loss in detail, it still sounds more pleasant.
Oct 24, 2018
TreeFrogs
85
Jul 31, 2018
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<Insert obligatory comment about how this is available on amazon for only $2 more so this isn't that great of a deal.>
Jul 31, 2018
peekeesh
2
Aug 2, 2018
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it's cheaper to get this from ebay if you are in CA. Oh and you will probably get better after sales support thru ebay. I've sent these guys a message 2 days ago but still no response.
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Aug 2, 2018
Calaverasgrande
1344
Jul 31, 2018
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is this a fully tube preamp or is it some kind of reflected plate type of low voltage tubes, with solid state op amps doing the real work?
Jul 31, 2018
Calaverasgrande
1344
Jul 31, 2018
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sounds about normal for a -10dB output. Actually -10db would be .775 volts. So that's a db or so hotter.
Jul 31, 2018
kasyx
11
Sep 7, 2018
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Real deal, though the bass and treble controls are done via ss if I remember correctly.
Sep 7, 2018