Air Tight ATM-300R Stereo Amplifier features:

  • Legendary musical charms of jubilee-long reputed, genuine WE300B direct-heated valve
  • Self-biased Class-A operation at WE-300B output stage
  • 3-stage triode amplification for sublimate musicality
  • DC-driven heater to reduce noise inherent in direct-heated valve
  • Bias/current meter to check optimum operation of output valve
  • Damping selector control to create one’s favorite sound
  • Lavish employment of second-to-none, custom selected components
  • Copper-plated chassis to remove magnetic distortion
  • Attenuator on direct-CD input