HANSEN

 Valve Powered Audio Equipment Mosfet Powered Power Amplifier - Mono-Block

    • Features:

    • Class-A Mosfet amplification from input
      to pre-driver stage

    • 8 Power Mosfets for High Current transfer
      in output Class-AB Stage

    • Mono Block Power Toroidal Transformer - 500 VA

    • Signal path Component Matching between
      Mono-Block pairs

Mosfet Power Amplifier (Mono-Block)

Technical Specifications:

  • 1 x RCA Input at 10K Ohm Input Signal required for maximum output: 530mV(rms) or 1,5V(p-p) at 1KHz.
  • 2 x Speaker Terminal Outputs
  • Power Consumption at 230VAC: 35W - 40W at idle with a maximum of 690W dynamic
  • Power Output measured after 15 to 30 minutes warm up: Power Output RMS into 8 Ohms static load driven with 1KHz input signal: 150W Power Output RMS into 6.1 Ohms static load driven with 1KHz input signal: 220W Power Output RMS into 3.9 Ohms static load driven with 1KHz input signal: 290W
  • Dimensions: 445mm(wide) x 123mm(height, including feet) x 293mm(deep, excluding inputs)
    AND 304mm(deep, including speaker terminals)
  • Weight: +/-10 kilograms
A selection of optional upgrades are available for this product.

Information supplied may be subject to change without prior notice.

Sonic Brief:

The Hansen Power Amplifier is designed for the audio purist with the shortest signal path between input and output. Great sound synergy can be obtained when the Hansen Power Amplifiers are matched with the Hansen Valve Pre-Amplifier. Purity, dynamics and excellent bass describe the sound of these power amplifiers. The listening pleasure of these power amplifiers is in the fine details and "air" of the sound recording with clarity and ease re-creating the three dimensional sound stage of the original. Mid-band reproduction is accurate and detailed and bass is deep with good bottom end information and control. Available upgrades take these power amplifiers to a level of sound well beyond the monetary value. These Power Amplifiers will bring great listening pleasure in any system.

Features:

  • Class-A Mosfet amplification from input to pre-driver stage

  • 8 Power Mosfets for High Current transfer in output Class-AB Stage

  • Mono Block Power,
    Toroidal Transformer - 500 VA

  • Signal path Component Matching between Mono-Block pairs

  • Multiple Capacitor-Bank design for Dynamic Sound reproduction

  • Internal Heat-sink designed to act as Shields from power supply

  • Faraday Cage enclosure design

  • Solid machined and brushed aluminium face (12mm)

Technical Brief:

The input signal is passed through three Class-A amplification stages before reaching the final Class AB output stage. Mosfets are used throughout the signal path. Power supply has high speed diodes and good quality capacitors with values far above the standard requirements so as to improve dynamics in the sound, smoothing of the voltage rail and noise reduction. Bypass capacitors are inserted in all critical positions on both power supplies and in the audio section. Heat-sinks are not only used for the purpose of heat dissipation but also for shields and are inserted between the power supply sections and the audio areas to reduce noise transfer. All resistors in the audio stage are matched. A toroidal transformer of much higher capacity than required is used. Eight Power Mosfets are used on the output capable of transferring high current to the speaker from the power supply giving the sound great dynamics. After warm up, the power output with a 1kHz signal tone into 8 Ohms is 150W, into 6,1 Ohms is 220W and into 3,9 Ohms is 290W. Protection is in the form of a mains fuse and DC power supply fuses. There is a temperature sensor on the main heat-sink which will cut the input sound to a low level should the temperature of the heat-sink rise above 70°C. HANSEN Power Amplifiers are designed for operation with 230VAC mains input.