What do balanced triodes mean? ... Dual triode preamp tubes like the 12AX7 really have two separate tubes inside one glass envelope. When the plate current draw of each triode is the same(as evaluated by our VTV testers), we refer to that as having balanced triodes.

What is a balanced 12AX7?

What are balanced triodes? The 12AX7 is a dual triode, meaning it is two tubes in one, with both sides amplifying the signal (in amps where both triodes are used). These balanced tested tubes have equal gain ratings on both triodes, which can help reduce noise and microphonics in the preamp section of amps.

Do preamp tubes need to be balanced?

the term "balanced" is refering to your last pre-amp tube, before you get to the Power tubes. You'll want this to be balanced. You just need one. If the other pre-amp tubes are balanced as well, that's fine but they don't need to be.