Which class is my amp? Help please.

[Hutton]

I am trying to find out what class (a,ab, or d) my Mesa Boogie Walkabout (300w) amp is. I really don’t know how to tell. Can I also assume that the amps bigger brother the m-pulse 600 will be the same? Thanks.

[Downunderwonder]

Pretty sure it's AB, one of the last of the breed for mainstream bass amplifiers. @agedhorseknows for sure.

[Bill Fitzmaurice]

It's not likely A, which you see in valve amps of no more than 20w.

[itu]

Have to ask, why is this of interest?

[Hutton]

32 minutes ago, itu said:

Have to ask, why is this of interest?

I just want to know. Asking questions and getting answers is how we gain knowledge.

[chris_b]

It's tube driven mosfet circuitry according to the Mesa web site.

I guess that means it's a tube preamp and SS power amp.

[agedhorse]

It’s class AB.

[Hutton]

3 minutes ago, agedhorse said:

It’s class AB.

Thank you.👍