Mk III Blue Stripe - Class A Class AB switch

[Gördon]

Just bought a MK III blue stripe picking it up in a week or so. According to the seller (shop) the power amp class switch on the rear top right is labelled Class A and Class AB ? It has 4 power amp tubes. I thought the rear switch was either Class A Simul Class ? Thanks in advance

 

[skelt101]

My Mark III DRG Blue Stripe is labeled Simul Class in the up position and Class A in the down position. Perhaps the shop owner is mistaken...?

 

[Gördon]

Cheers - yep I’ll get photo taken. Dealer said Class AB top position & Class A bottom. Having said that Simul- Class is Class AB

Cheers

 

[rgx612a]

The inner two tubes are in class AB and the outer two are A, both the inner and outer tubes together are what makes it simulclass