Perreaux Prisma 350 Stereo Power Amplifier

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Stock code: PERRPRIS350


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    Our Price: £7,695.00
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    Product Information


    Rugged Build Quality. Mechanical strength has been a hallmark of Perreaux products since the company first started production back in 1974. The concept behind the physical design and construction is that each structural member should contribute to both rigidity and performance.

    Ultra Stiff Power Supply. The 350 incorporates a massive custom designed, toroidal power transformer, employing unusually heavy gauge wire that reduces copper losses to a minimum. An electrostatic shield prevents AC line borne interference from entering the signal path. The power supply filter capacitors, totaling 60, 000uF (30, 000uF per channel), have exceptionally low inductance and internal resistance.

    Hybrid Class-A/AB. The bi-polar transistors used in the 350 are operating in Class-A. This avoids the crossover notch distortion and the resulting odd-order harmonics present, to some degree, in all other classes of operation. The devices used in the 350 output stage are MOSFETs, which with high quiescent current circuitry, are run in the equivalent of Class-A to 10 watts. Beyond this point the output class is technically Class AB (hence the hybrid nomenclature), but with a major difference.

    MOSFET Output Stage. The 350 output stage takes full advantage of the unique qualities of MOSFET devices and in many ways they are superior to bi-polar transistors.

    All this leads to an absolutely incredible 80amps per channel drive capability, which allows absolute and consummate control of any loudspeaker.

    Multiple Protection Systems, The 350 incorporates a full range of protection circuits, isolated from all signal carrying circuits via opto-couplers. However, these circuits are aimed at ensuring an extremely high safety margin for these high-powered products rather than as a mandatory addition to correct for poor or overloaded circuit topologies.
     

    Technical data


    Continuous Power Ouput (per channel):    
    350Wrms into 8
    600Wrms into 4

    Total Harmonic Distortion (THD+N):    
    Typically    0.004% @ 1kHz into 8
    20Hz to 20kHz    <0.02% into 8

    Frequency Response:    
    20Hz-25kHz, ±0.25dB

    Hum & Noise (unweighted):    
    -100dB, ref. rated output

    Dynamic Headroom (rated with music):    
    >1.1dB

    Maximum Current Output:    
    80A per channel

    Damping Factor:    
    >700 @ 1kHz into 8

    Gain    
    30.7dB

    Input Impedance:    
      Unbalanced    22k
      Balanced    3.3k

    Input Sensitivity:    
      Unbalanced    1.5Vrms
      Balanced    ±0.78Vrms]

    Dimensions:
      Width - 430mm (16.9")
      Height - 186mm (7.3")
      Depth - 497mm (19.6")

    Weight:    30.0kg (66.1lb)
     

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    All pre-owned items are in stock and available for next day delivery if order placed before 1pm.

    Enquiries will be responded to within 1 hour during office hours.

     

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