Mesa Boogie Stereo Simul-Class 2:Ninety 2-Channel 90-Watt Power Amplifier 1992 - 2013 - Black
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Core Design & Operation
- Dual Power Topology: Combines Class A and Class AB in the same power block.
- Tube Pairing: Uses four power tubes total in mono sections (or sets of 4 per channel in stereo units). Inner tubes handle Class AB; outer tubes handle Class A.
- Switchability: Allows scaling down from full high-wattage Simul-Class operation to lower-wattage pure Class A operation. [1, 2, 3, 4]
Specifications by Popular ModelModel TypePower Output / WattagePower TubesPreamp TubesMark III (Early/Standard)75W (Simul-Class) / 15W (Class A)2x 6L6 (inner) + 2x EL34 (outer)4 to 5 x 12AX7Mark III "Green Stripe"85W (Simul-Class) / 25W (Class A)2x 6L6 + 2x EL34 (Pentode/Triode logic)4 to 5 x 12AX7Mark IV85W (Simul-Class) / 50W or 35W (Class A)2x 6L6 + 2x EL34/6L65x 12AX7Stereo Simul-Class 2:Ninety180W total (90W per channel stereo)8x 6L6 (4 per channel)
This item is sold As-Described
This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.
| Listed | 2 days ago |
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| Condition | Very Good (Used) Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more |
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