Lamm ML2.1 Tubes

Thomas the new reissues New Sensor - Mullard ECC83/12AX7 and CV4024/12AT7 tubes in my MC275 amp provided another layer of details. However, my Black Sable - Mullards ECC83/12AX7 in my C500T preamp made the most sonic improvement...and they were the most expensive!

Later this year I will revisit NOS 12AX7 types that improves midrange and bass.

On a different subject, changing the fuses in the MC275 also improved the sonics.

So far, the Tele 12AX7 ribbed plate is best in my ML2; many others prefer the smooth plate Tele, but I've not tried that yet. I like the Mullard CV4004 in my phono stage, but did not think to try it in the Lamms...hmmm.

I have preferred my Telefunken ECC803 tubes in my ML1.1s, but I think one of their main advantages is their longevity, the sonic difference being noticeable but not a huge improvement over the already good sounding tubes I had in there. I remember asking this question in the past and the question asked back at me was what is that you want to change...I think that's something you really have to ask yourself. If you like the sound of the stock unit, I guess you should think twice before shelling out the big bucks for NOS tubes. On the other hand, if you have some spare NOS tubes sitting around (having just sold a 12AX7 based preamp and amps I had a load of leftover and new spare Teles), tube rolling for the Lamms is a simple exercise.