Mesa D180 preamp tubes

[Dallyd31]

So, I ended up getting the Mesa D180 that I stumbled upon. It sounds really really good. My question is about the preamp tube compliment. I have seen several conflicting reports on this.

Mine currently has 2 12AX7 and 2 12AT7:
V1 12AX7
V2 12AT7
V3 12AT7
V4 12AX7

Is this correct ? Also which one is the phase inverter ? ( when looking at the front of the amp, I am assuming V1 is the tube on the far right side, closest to the input jacks)

 

[mpdd]

mine only had one 12at7 in it and the location was labeled with a white grease pencil

Link Removed

 

[Primakurtz]

If you look closely at the preamp tubes from above, are there stamped letters/numbers (12AX7, etc.) next to each tube socket? Mine had them - it made life a bit easier.

 

[Dallyd31]

I just took the top part of the casing off, and lo and behold...there is a black sticky "label maker" type label stuck to the chassis, showing 2 12ax7 and 2 12at7.

Now, does anyone know which one is the phase inverter ?

 

[Dallyd31]

Anybody out there know which one is the phase inverter ?

 

[Downunderwonder]

Invalid Link Removed someone linked that on the other d180 thread about amp bias for the power tubes.

Can I suggest we put all our d180 stuff in the "my mesa d180" thread and politely ask the tube gurus to keep an eye on it also please!