ILLusion Liquid Air Umbilical for Modwright units

The 5U4G is a drop-in replacement if you have a hole cut in the top of the case to allow for its extra height. The 5R4GYS is also a drop-in replacement; it needs both a hole in the top and a piece of the back panel cut off to fit. There are also some 6___ series rectifiers which are electrically appropriate replacements but need pin adapter sockets.

Which Mullards are you using? There are many different ones and they are far from equivalent either in price or performance. The consensus I have been able to gather suggests that pre-1960 is best except for the relatively rare 1962 4-notch Blackburn made ones which are also good.

Can you go into a little more detail about these Audio Magic umbilicals? Where do you get them and what connectors do you specify? It appears to me that at least some of the models are quite pricey LOL.

Our (Wig's and my) systems are pretty similar; we should share some more information about tweaks and tuning.

I'm more oriented towards Stillpoints these days; 3 Ultra SS under my speakers put my previous Rollerblocks to shame.

Thanks for the info for Audio Magic; (for comparison) I was looking at the power cord prices on his website

As for my rectifier, I'm using a 1958 Dutch black base Mullard GZ34. I can't say how it compares to any 5U4G's because I haven't tried any yet. I do like it better than the Gold Lion; IMHO the sound is both smoother and more dynamic. As for the 5U4G, other Modwright owners have extolled the virtues of NOS TungSol.

I must say that my experience with both the 6SN7 and the 5AR4 (GZ34) mirrors that of many others, i.e. no current production tubes match the better tubes from the '40's, '50's and '60's.