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I picked up an Opera Conance Cyber 30 2A3 SET amp to use as a headphone amp. Aside from a very slight hum (that is not noticeable when music is playing) it sounds nice with my Grado GS1000i headphones. I am currently using an RCA ECC83 driver and Sovtek 2A3's in it but would like to try upgrading the power tubes. The two tubes I have been looking at mostly are the RCA double black plate and the Sophia Electric Princess 300b 2.5V. I am new to this so I would welcome any input or suggestions from you experts.
I prefer the solid plate EML 2A3s, but since the 2 tubes (mesh and solid) sound differently, it's just a matter of the sound you like. I've never heard the JJ's. I have some dual plate RCA's, but the earlier single plates, i found out, are more appealing to me.
"You don't need to be a Weatherman to know which way the wind blows"
The Sophia 300b 2.5v is a 2.5 volt version designed to be used in 2A3 amps.
Two best to choose from :
Moderate Budget : JJ 2A3-40
Extensive Budget : EML mesh Plate 2A3
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