Bogner Amplification Atma HeadThe most versatile and ultimate bedroom to stage amplifier that goes from 1 to 5 or 18 watts full tube power without sacrificing tone and feel. Where old tradition morphs into new and iconic tools are re envisioned for the modern hand. This is Atma. The sleekly rounded corners are perhaps the first detail noticed of Atma's unique hybrid aluminum and wood construction. Not only is it a beautiful artistic statement that's incredibly strong and durable