Air Tight ATM-3 Mono Amplifier features:

  • 6CA7 output valves for high reliability and affluent musicality under triple push-pull configuration
  • Selector between UL and TRIODE modes enabling to match the amp operation to type of speaker used, or the sound to your personal taste
  • Bias adjustment enabling each and all valves to exhibit the same operational performance
  • Removal of PCB’s for vivid, natural sonic reproduction
  • Large power transformer with heavy-duty choke coil and reputed Tamura output transformer
  • Muting delay system to protect output valves