Tube rolling 12AX7As


I just acquired a McIntosh C2300 preamp that is currently being shipped to me. This is my first venture into tube gear. I see the owners manual states that this preamp uses 12AX7A tubes. Are those tubes interchangeable with 12AX7s? For tube rolling, do I have to make sure I swap out for ONLY 12AX7As?

I ask because from everything I have read and researched, the Mac stock tubes are considered mediocre compared to what is available out there as a substitute. Thanks in advance for the replies.
brad34695

Showing 1 response by newbee

There are two reasons to change tubes in an amp. 1) Improve quality of tube and 2)Change the tone of the amp. Different brands of tubes, both new issues or NOS, impart a distinctly different tone. To be sure you get the tube that is best for you, you will have to be able to articulate what it is you want to change.

To do this you will have to listen to your unit for a considerable period of time to learn its sound and know where to take it. So listen and take your time. Come back in 6 months or so and someone will be able to give you pertinent help.

Do so now and you will probably be wasting your money and will go through multiple tube sets before you accidentally find what you like.