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Preamp for Art Jota

Hello,

I bought a used art jota tube amp with volume control and have found
it lacks that tube magic without a line stage. I am feeding a Zesto tube preamp into it.

I would only want a tube linestage with a remote. It's paired with a
Reference 3A episode with a rock 7 turntable and ortofon mcA90 cart in my second system

I was thinking perhaps a CJ ET3. The Zesto Leto would be an obvious choice but too pricey for a second system

Thanks

Michael
radioheadokplayer

Showing 2 responses by georgehifi

georgehifi's avatar
georgehifi
10,312 posts
 
Yes do your home work and Google the different sounds tube nuts say that different makes of 6DJ8's can have.
From memory stay away from the European NOS Telefunken and Amprex as they have a more etched sound, the English Mullards and Brimar, and maybe some others they say are darker and more euphonic.
Here is one site that give their oppinion of what different makes of 6DJ8/EC88/CV5358 (all the same) can sound like.

https://www.tubeworld.com/6dj8.htm

Maybe I was wrong about the Amperex after reading this or it's just the "D Getter" one that sounds sweet with a great midrange.

Cheers George
georgehifi's avatar
georgehifi
10,312 posts
 
Michael the Jota is very high sensitvity, it only needs 400mV in to give it's full output just before it distorts.
Most sources these day are well over 2v (2000mV) out. So as you can see it doesn't need an active premap with even more gain. Even a source with 1v (1000mV) is more than double what the amp can take.
So keep using your passive volume, but to give it more tube sound try to change both the input tubes (6DJ8's) for a more euphonic sounding NOS type of 6DJ8 like an English Mullard or similar.

Cheers George
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