How a pair of Mark Levinson ML2 stands with the best amps today ?

Those Levinson amps will drive a 2 ohm load for 30 years.

 Power supply, capacitance is off the chart, even by today’s standards.

  Have them serviced by a competent tech, or the factory techs.

 AMAZING AMPLIFIERS, you will love them.
topmshelf audio amps.