Mixed 12AT7 tubes for MC275 MK VI?

[Lockheed Mar]

Hi everyone,

Des the MC275 can run normal with mixed 12AT7 tubes? I've two MC275 MK VI and recently change 4 pairs of 12AT7 (2 pairs per amp). The problem is I have 3 pairs CV4024 Mullard and 1 pair 12AT7 Brimar.

Thank you very much for helping

 

[Pio1980]

Best use same in each individual amp, especially if bridged.
Otherwise probably not critical.

 

[Seamaster]

Hi everyone,

Des the MC275 can run normal with mixed 12AT7 tubes? I've two MC275 MK VI and recently change 4 pairs of 12AT7 (2 pairs per amp). The problem is I have 3 pairs CV4024 Mullard and 1 pair 12AT7 Brimar.

Thank you very much for helping

Should be fine if they are used in a mirror image fashion between the two monoblocks

 

[Lockheed Mar]

Should be fine if they are used in a mirror image fashion between the two monoblocks

Thank you, Seamaster, so where is the best position to put the 12AT7 Brimar?

Thanks.

 

[Seamaster]

Thank you, Seamaster, so where is the best position to put the 12AT7 Brimar?

Thanks.

If you like open and sparkling sound stick Brimar into V1. If you like warmer sound, use Mullard in V1 and V2

 

[Lockheed Mar]

If you like open and sparkling sound stick Brimar into V1. If you like warmer sound, use Mullard in V1 and V2

That's a great! Thank you very much

 

[mati1979]

If you like open and sparkling sound stick Brimar into V1. If you like warmer sound, use Mullard in V1 and V2

Hi, in Stereo mode ? V1 and V7 ?