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Phase Linear 700 (Series Two)



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Brand: Phase Linear

The Phase Linear 700 (Series Two) is a high-performance professional audio amplifier that was introduced in the mid-1970s. It is part of the Phase Linear line of equipment, known for their advanced design and high-quality components.The Series Two 700 amp delivers 250 watts per channel into 4 ohms, with a frequency response of 20 Hz to 20 kHz (+0, -0.2 dB). It features a classic solid-state design, with dual JRC4558 op-amps, high-current BD139 pre-drivers, and Toshiba 2SK275 power transistors.Some notable features of the Phase Linear 700 Series Two amp include:1. Unique Darlington Configuration: The Series Two uses a unique Darlington configuration for the output stages, which provides a higher current gain and lower output impedance. This results in a more powerful and controlled amplifier.2. High-Quality Components: The Series Two uses a combination of high-quality components such as metal-film resistors, polypropylene capacitors, and film capacitors for a more precise and stable sound.3. Enhanced Feedback System: The Series Two features an enhanced feedback system, with a feedback loop that ensures stable operation at high power levels, while maintaining the low distortion characteristics that Phase Linear is known for.4. High Power: The Series Two delivers 250 watts per channel into 4-ohms, making it a powerful amplifier that can drive a wide variety of speaker systems.5. Versatile Inputs: The Series Two offers a variety of input options, including balanced XLR inputs, unbalanced RCA inputs, and tape monitor inputs.6. Durable and Reliable: The Series Two is built to last, with a solid and durable chassis, aluminum faceplate, and internal components that are designed for reliability and long-term performance.Overall, the Phase Linear 700 (Series Two) is a highly regarded professional audio amplifier that combines powerful output, advanced design, and high-quality components. It continues to be a popular choice among audio engineers, music enthusiasts, and recording studios that demand the very best in audio performance.



  • Power Output: 360W into 8Ω (stereo)
  • Frequency Response: 12Hz to 40kHz
  • Distortion: 0.009%
  • Damping Factor: 1000
  • Speaker Impedance: 4Ω (minimum)
  • Input Sensitivity:
  • Signal to Noise Ratio: 110dB
  • Dimensions: 483 x 178 x 254 mm
  • Weight: 20 kg
  • Year: 1978
  • Price:

Phase Linear 700 (Series Two)

Phase Linear 700 (Series Two)

Phase Linear 700 (Series Two)

Phase Linear 700 (Series Two)

Phase Linear 700 (Series Two)

Phase Linear 700 (Series Two)

Phase Linear 700 (Series Two)

Phase Linear 700 (Series Two)

Phase Linear 700 (Series Two)

Phase Linear 700 (Series Two)



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