• Country
• United States of America (USA)

• Manufacturer / Brand
• Atma-Sphere Music Systems, Inc.; Saint Paul, MN

• Year
• 2003 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 207697

• Number of Tubes
• 12

• Valves / Tubes
• 6SN7GT 6SN7GT 6SN7GT 6SN7GT 6AS7G 6AS7G 6AS7G 6AS7G 6AS7G 6AS7G 6AS7G 6AS7G

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 117 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 60 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: OTL Monoblock M-60 Mk. II - Atma-Sphere Music Systems, Inc

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 17 x 8 x 14 inch / 432 x 203 x 356 mm

• Notes
• OTL (Output TransformerLess) power amplifier, mono, Class-A, with Bias meter.

• Net weight (2.2 lb = 1 kg)
• 25.4 lb (25 lb 6.4 oz) / 11.532 kg

• Author
• Model page created by Gottfried Silberhorn. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Atma-Sphere Music Systems, Inc.; Saint Paul, MN