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In the Forum: Audio Discussions
In the Thread: Does tube preamplifier VTL would add tube sound to system
Post Subject: Tubes are from Venus, SS is from UranusPosted by KLegind on: 7/9/2010
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 muddasir wrote:
Thanks paul for well thought reply. Two things need clarifiication, i am not new to the subject and am a constant and avid reader.Secondly my preference for music is hobby for electronics and pleasure of listening through application of mind and knowledge  on the subject. However going through several pages on the forum i still feel a lot is to learned yet.
Getiing to the point the first preference is ease of listening, i calculate it by time through which listening fatigue is developed or i get bored to listening.The carry 805 SET and horn klipsch was very pleasureable but except or vocals there was always something i felt which was missing,the accuracy of mid bass and the awe inspiring LF. I made A/B comarison with cary and krell FPB -600. the cary was a clear winner in smoothness and mid but it misssed serveral overtones in lower mid range,krell always had been a safe bet so i decided to keep krell and trade cary for B&W 802 speaker upgrade.Frankly i didnot test the used 802 with krell before purchasing and after several months of listening i am pretty sure that this combination cannot be honey to my ears. it lacks involvement with music.
SO i read somewhere on the net if we have to mix ss and tube the combination should be tube pre----ss amp and NOT ss pre ------tube amp.The obvious thought that came to my mind was the the warmath of even order harmonics could be generated at line level and then amplified , though the ss amp would still generate even order harmonics but still we can get close to tube sound with an accurate ss amp like krell.
My reference for VTL 7.5 was due to the reason that a used is being offered to me at the moment.
regards


Listen Muddasir, its obvious that you have recognized some strengths and flaws in your playback system, and you are able to describe them after a fashion. I like that. You know what your Krell does well and what your Cary did well - why not capitalize on this realization? Try bi-amping a speaker using a line level crossover. There is no guarantee that it can save your B&W speakers (probably not) but try with a different speaker, even a cheap one. If the Krell and the tube amp can communicate together (big "if"), then you will notice within a few bars of the first track, that the sound has gained a certain amount of calm, solidity and dynamics. Taking the bass load off the back of a single ended tube amp will let it play within its "quality range". Within this range it will operate at a much more interesting level.

Reg. tube pre and SS power: I think the idea has more intellectual appeal than real audio worthyness. You take any preamp tube harmonic artifact and overlay it with solid state artifact. Will it be good sounding? I don't think so, but maybe I never heard such a combination well implemented. SS pre and tube power on the other hand can sound OK.  
The question is: Can 2. order harmonic distortion plus negative feedback time domain distortion result in anything but crap?  

Sincerely
Kris

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