Softone Model 8 stereo power amplifier

Description

Softone Model 8 Stereo Power Amplifier: Full Description and Specifications

The Softone Model 8 is a stereo power amplifier, primarily known for its use of directly heated triode tubes, specifically the 300B or 205D, depending on the specific version. It's designed to deliver a warm, soft, and clear tonal quality, reminiscent of classic movie theater sound reproduction. Softone emphasizes a direct-coupled circuit design to minimize interference with the audio signal path. There are two main versions of the Model 8: Softone Model 8-300B:

• Electron Tubes: 1 x 12AU7, 2 x 300B
• Input: 1 x RCA input (unbalanced)
• Output: Speaker terminals (for 4 ohms to 8 ohms)
• Output Power: 8W + 8W ( at 6 ohms)
• Frequency Response: 7Hz - 50kHz (-3dB)
• Gain: 26dB
• Noise: 0.2mV or less
• Dimensions: Width 12" (30cm), Depth 8.7" (22cm), Height 8.4" (21cm)
• Weight: 19 lbs (8.5Kg)
• AC Power Requirements: 110-120Volts, 50-60Hz or 220-240Volts, 50-60Hz (selectable at order), 80W consumption.
• Key Features:
  • Three-stage direct coupled and fixed bias circuit.
  • Efficient DC/DC converter for filament operation.
  • Low ripple high voltage power supply using FET.
  • Automatic plate current adjustment for the 300B output tubes.
  • High-quality parts including gold-plated RCA jacks and speaker terminals, and R-core transformers.

Softone Model 8-205D:

• Electron Tubes: 1 x 12AU7, 2 x FullMusic 205D/n
• Input: 1 x RCA input (unbalanced)
• Output: Speaker terminals (for 4 ohms to 8 ohms)
• Output Power: 2W + 2W (at 6 ohms)
• Frequency Response: 25Hz - 60kHz (-3dB)
• Gain: 23dB
• Noise: 0.2mV or less
• Dimensions: Width 12" (30cm), Depth 8.7" (22cm), Height 8.4" (21cm)
• Weight: 19 lbs (8.5Kg)
• AC Power Requirements: 110-120Volts, 50-60Hz or 220-240Volts, 50-60Hz (selectable at order), 80W consumption.
• Key Features:
  • Three-stage direct coupled and fixed bias circuit.
  • Efficient DC/DC converter for filament operation.
  • Low ripple high voltage power supply using FET.
  • Automatic plate current adjustment for the 205D output tubes.
  • High-quality parts including gold-plated RCA jacks and speaker terminals, and R-core transformers.