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S/3700e Multi-Channel Power Amplifier

Front View The S/3700e is the first multi-channel home theater amplifier to carry the Threshold brand in the company's 30-year history. Nonetheless, the S/3700e is heir to Threshold's legacy of high-current designs that effortlessly command and control demanding loudspeaker loads, delivering the power needed for full revelation of dynamic contrasts and bass extension.

But power is only part of the S/3700e story. The amplifier employs minimal feedback, and is direct coupled input to output, with no capacitors in the signal path. Like all Threshold amplifiers, it utilizes close-tolerance metal film resistors, and matched JFETs. The result is superb open and airy resolution of low-level detail -- the subtle shadings that differentiate musical performances.

Although the S/3700e ships as standard with five channels, its modular construction enables it to be expanded at any time to six or seven channels.

The highly affordable S/3700e brings Threshold's acclaimed designs within easy reach of the film lover who refuses to give up audiophile performance to gain home theater realism.

S/3700e Features

  • High-current output stage easily drives low-impedance reactive loudspeaker loads
  • Standard with 5 channels, expandable up to 6 or 7 channels
  • Add channels at any time
  • Low-noise solid state design
  • All-discrete components
  • Accurate, detailed reproduction
  • No transistor glare
  • Direct coupled input to output for tight extended bass
  • High-speed design resolves complex musical passages
  • Balanced inputs provide high common-mode rejection for lower noise
  • Premium components such as military-spec precision resistors, computer-grade capacitors, military-grade glass-epoxy circuit boards, massive toroidal power transformer
  • Isolated power reserves for voltage and current gain stages
  • Gold-plated RCA jacks
  • Swiss-made XLR connectors
  • Cardas gold-plated binding posts
  • Traditional Threshold rugged chassis construction
  • Intelligent 12V DC Trigger for remote startup
  • High reliability
  • Soft-start turn-on
  • Modular construction
  • Rack-mountable design
  • Attractive polished silver anodized aluminum front panel
  • Handcrafted in the USA
S/3700e Specifications
  • Nominal Power Output (20Hz–20kHz; three channels driven)
  • Greater than 120 Watts per channel at 8 Ohms
  • Greater than 200 Watts per channel at 4 Ohms
  • Frequency Response: DC- 50kHz
  • Distortion: 0.05% at 1kHz, at rated output power
  • Voltage Gain: 28 dB
  • Input Impedance: 22k ohm (RCA), 600 ohm (XLR)
  • Input Sensitivity: 1.25V RMS for full power output
Dimensions and Weight
  • 19'' W x 7'' H x 21.5'' D
  • 48.3 cm W x 17.8 cm H x 54.7 cm D
  • Shipping Weight (5 channel): 69 lbs., 32 kg
  • Net Weight (5 channel): 64 lbs., 29 kg

View S/e Series Literature (PDF Format)

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Copyright 2016 Threshold Audio, Inc. All Rights Reserved.

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