GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Melquiades Amplifier
In the Thread: Gas voltage reference 0A2 tubes.

Post Subject: The 0D3 in Melquiades.Posted by Romy the Cat on: 9/20/2009

Romy the Cat wrote:
Did anyone ever see the ready to do tube sockets adapaters that would let to pit the large gas tubes ingot the small sockets? Melquiades use 7-pin small 0A2 tubes but I would like to try the 0D3. They are the same 150V tubes but I got some VERY old 0D3 and I do not mind to try them on negative supply. The negative supply is bias line on driver tube and it is VERY critical as it sits right in grid. I would like to see what it would do with sound. The different 0A2 do affect sound as I described above, what not to try the larger or older gas tube?

I have made my adopter from 0A2 to 0D3 tube and am trying now the large VR150 tubes. I am running my new VR on the negative supply side, the one that handles bias. What I am hearing I think that there is some difference in sound between the large and small VR tubes and but not more than between the VR tubes of the different brands. It might be just initials reaction and I will see how it goes. I will keep the new large tube in there for a week and then will see how it goes.

The Cat

Rerurn to Romy the Cat's Site