We do not have the original case for this model, it is considered to be one of the first solid-state preamplifier/control units from 1968-1970 or 1971-72
Description:
The Dyanco PAT-4 is an all silicon solid-state control center and preamplifier which must be used in conjunction with a basic power amplifier, such as the Dynaco stereo 80 or Stereo 120, and a pair of loudspeakers.
In addition, the PAT-4 provides sufficient power for a pair of 600 ohm headphones.
Specifications:
• Frequency response: 10Hz to 100kHz
• Total harmonic distortion: 0.05%
• Gain: 54dB (MM), 20dB (line)
• Input sensitivity: 10mV (MM), 500mV (line)
• Signal to noise ratio: 70dB (MM), 85dB (line)
• Semiconductors: 8 transistors, 2 diodes
• Dimensions: 13.5 x 14.25 x 9 inches
• Weight: 10lbs