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Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 638

post #9556 of 9558

As my HD700s also have a bit of a treble spike, I find the more subdued Lorenz to be a great match in my Glenn with GEC and the slotted Bendix graphite 6080 output tubes, both of which have good highs and lots of air . And I suspect that the more forward and airy Siemens might be a very good match with the more subdued Mullard 6080, but I haven't tried this combination yet....

 

 

Edit: OK, rolled in a pair of 1966 Mullard 6080 with Siemens C3g/s this evening for about an hour and quickly found myself listening to the music, not the equipment. :)

 

Given that the Mullard is typically considerably less expensive than the GEC and Bendix, it is my opinion that the Mullard 6080 together with the Siemens C3g/s offers a very satisfying compromise between affordability and performance.


Edited by gibosi - 4/17/15 at 9:57pm
post #9557 of 9558
Quote:
Originally Posted by gibosi View Post
 

As my HD700s also have a bit of a treble spike, I find the more subdued Lorenz to be a great match in my Glenn with GEC and the slotted Bendix graphite 6080 output tubes, both of which have good highs and lots of air . And I suspect that the more forward and airy Siemens might be a very good match with the more subdued Mullard 6080, but I haven't tried this combination yet....

 

 

Edit: OK, rolled in a pair of 1966 Mullard 6080 with Siemens C3g/s this evening for about an hour and quickly found myself listening to the music, not the equipment. :)

 

Given that the Mullard is typically considerably less expensive than the GEC and Bendix, it is my opinion that the Mullard 6080 together with the Siemens C3g/s offers a very satisfying compromise between affordability and performance.

 

Hi gibosi.

 

Very interesting...just might tempt me into trying those Mullards! (I presume those are GEC 6080s you mention...how do your 6AS7G equivs compare in the Siemens/Lorenz shoot-out?).

 

Talking of which I am liking these Lorenz (gold pins) more by the day as they get more burn-in - they certainly remove the (occasional) need for some tinkering with the T1s to tame a bit of treble harshness. And do provide a bit more bass - in my gear at least - which would please lovers of the lower register!

Micro detail/transients/air still not quite up to the Siemens 'S', but I just might be able to squeeze a little bit more by eliminating the adapter sockets and (as I normally do) mechanically tie the pure silver wire direct to the pins and then solder - I much prefer metal-to-metal contact wherever possible, with minimal solder inbetween...at least I can convince myself of the improvement, lol! :wink_face:.

post #9558 of 9558
Quote:
Originally Posted by hypnos1 View Post

 

Very interesting...just might tempt me into trying those Mullards! (I presume those are GEC 6080s you mention...how do your 6AS7G equivs compare in the Siemens/Lorenz shoot-out?).

 

I haven't rolled the GEC 6AS7 recently, so can't say for sure. As I find the GEC 6080 to be very similar, the 6AS7s are safely stored away for now.

 

The treble with the Siemens C3g / Mullard 6080 is not quite as smooth as the Lorenz / slotted Bendix (my current default), but on the plus side, there is a bit more detail and air. I prefer the Lorenz / Bendix combination, but detail freaks may prefer the Siemens / Mullard.

 

For those who might be interested, there are at least two, and maybe three, versions of the Mullard 6080. The short bottle on the left, with metal shields between the second and third spacers, is the first version. Mine are dated 1957. The taller bottle with a bit of smoke on the glass between the second and third spacers, is the second version. Mine are dated 1966. I have seen pictures of tubes dated into the 1970s, that look very much like the 1960's, with the primary difference being no smoke on the glass. However, I don't know if that is the only difference, so these 1970s tubes may or may not represent a third version.

 

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