2. amps-preamps
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can it bee that audio research vsi 75 has lack of open highs/mid ?

i auditioned twice one on display which offered me in kind of attractive price..
did it with my vinyl records
280 hours of working with kt150 tubes.
we tried it on several speakers .

some of them the sound was more open, but i still felt that it’s not "open" and natural enough.

i know that arc saying that the amp need around 600 hours for break in, but still i would expect something more after almost 300.
we compared it with kr audio va 900 which i think was a bit more open, but i think also a bit more aggressive.

does someone have another experience with this integrated amp?

128x128stone1
oldhvymec
5,101 posts
 

Be patient. Some of these guys are using teflons, 600-1000 hours for sound that last 35+ years, it's worth the wait.

I use teflons in a few valve units, wonky is the word for a bit. Drive you nuts in speaker crossovers, but they sure sound good after a 24/7/14 face to face (2 whole weeks.) THEN listen!

Regards

tomic601's avatar
tomic601
13,004 posts
 

Dave has it right, about 500 hours to settle in. That is the nature of Teflon caps.

Enjoy the music journey 

Jim

stone1's avatar
stone1 OP
112 posts
 

thanks.
what are those teflon caps?
sorry but my english is not perfect.
what do you mean by: "Drive you nuts in speaker crossovers, but they sure sound good after a 24/7/14 face to face (2 whole weeks.)"
that i should leave the amp working constantly for  2weeks?

hotei
158 posts
 

Mine with KT120’s sounds fantastic.  It is paired with Alta Audio I/O speakers.  I have no complaints.

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