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Changed power tubes on my C-J mv 50 .
I've been stayng with Genalex kt 77 ri from september :listened
every kind of music ,from Bela Bartok quartets to Kendrick Lamar,
and never thought to change .
Nice depth,nice midrange ,deep bass (not asMullard xf2)and never
I listen a lot, average 3 to 4 hours a day .
I have ordere some Mullard el 34 reissue and el34 premium series
from the tubestore as back up.
Last week i swept kt 77 and put mullard reissue on;so just few hours
on them ,but i can say i am very satisfied with the sound .
Very balanced ,maybe less pronounced high section ,but overall
more in line with the original c-j sound obtained with the
custom power tubes (mv 50 was originally supplied with philips -
sylvania 6ca7 tubes )
At half the price respect kt77 tubes i am very satisfied
with the results .
I have to say that new sensor power tubes have great sound and reliability
(c-j gear is pretty hard on tube ),and buying from a well known
and reputable seller makes nos power tubes prices really unfair.
What people are willing to pay sets prices. Has nothing to do with a seller unless they have a monopoly.
Most people would pay more for the same item from a reputable seller, who provides value and service.
Every time someone purchases through Amazon Prime without first checking for an (often) lower price on another site proves my point. Amazon is a known company, ships items immediately, and has a 0 questions asked return policy. To most people these shopping features are more important than absolute lowest price.
Tubes are no different. Would you buy a set of tubes from an unknown seller, just because the price was lower than another seller who has a good reputation in the market ?
Some people would take their chances, most would prefer reasonable certainty.
not sellers. Quality old manufacture tubes are priced a lot higher than new manufacture regardless of the seller or amazon. Buying either from a good seller is a good idea.
this is the point .
Just to make an example :i have several el34 sed =c= quuartets
that i could use ;now they are expensive and seem to be the
latest big thing among "new" production el34's.
They are now considered Nos and very sought after.
I prefer to use Genalex kt77 or Mullard el34 reissue :i found them
more "overall" satisfyng and complete than the now"nos"old svetlaana
from St.Petersburgh;i am not saying that they are bad ,no,i 'm just
saying that sometimes they lack in punch and somewhat "slubby"on
bass;winged c are marvellous on acoustic jazz and guitar ,voices
but sometimes soft on other kind of music .
If you only listen acoustic or baroque music ,you''l may find them
I am a 360° music guy and i don 't want to listen to tubes ,i want to
listen to music .
So i find nos mullard xf2 lacking in some departs so they do old
Sylvania 6ca7;don't take me wrong:they are marvellous tubes ,but
they don't hold on with all the music aound in 2017.
I think "now"tubes are more complete in this respect.
This is my experience (my last listening :the complete Beethoven
sonata dy Andreas Schiff,but now i am listening to the last album
by Sam Amidon)
With modern prodution you have the chance to have very well matched
tubes ,while is very difficult ,now ,with nos;and if you have the
chance to meet fine matched nos quartet ,you pay silly price .
You can find Rft el34 quartets at reasonably prices ,but i
don't think they will better modern production .
So ,at he end ,in 2017 you are going to pay too much for nos power
That is what i meant.
Regarding signal tubes ...is another story.
This is my experience after a 30 years old love story with vacuum
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