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Perreaux Prisma Stereo Power Amplifier | Audio Emotion
Perreaux Prisma Stereo Power Amplifier | Audio Emotion
Perreaux Prisma Stereo Power Amplifier | Audio Emotion

Product Description


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)
 

Specifications

Product Type
Power Amplifier
Brand
Perreaux
Condition
New

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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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About us

From small beginnings in 1974, PERREAUX quickly transformed into a New Zealand export success story.

Founded in Napier, New Zealand by electronics guru Peter Perreaux with a $1000 investment. The first product to market was the now legendary "GS 2002", an integrated Class A transistor Hi Fi amplifier capable of an impressive albeit modest 22W per channel.

The initial success of this rugged, reliable solid-state amplifier prompted further developments of PERREAUX's product offering and lead to the release of high quality preamplifiers, power amplifiers and loudspeakers into both the audiophile and professional audio markets.

New Zealands PERREAUX quickly set the standard for power, performance and personality – at concert halls and in the homes of discerning home music lovers everywhere.

What we do

PERREAUX designs, engineers and manufactures state-of-the-art, audiophile-class, amplifiers, preamplifiers, loudspeakers and audio equipment.

We employ highly-skilled and qualified designers, engineers and technicians to create sound experiences - not just sound equipment. We source the finest componentry available for our designs and meticulously assemble by hand. Our products are thoughtfully designed and expertly finished, engineered to last a lifetime.

What we stand for

"We design beautiful objects that most people will never see" Edwin Nieman Managing Director, PERREAUX Audio.

At PERREAUX we are driven by a passion for music. We take great pride and personal care in manufacturing precision audio products that are beautiful and functional - both inside, and out. Every product we design is hand-built, thoroughly tested, and fully supported. At PERREAUX we take time to get the fine details right.

Website

www.perreaux.com

Delivery Information

Delivery is free for all orders over £250.

'In Stock' items ordered before 1pm will be dispatched the same day.

We use DPD Local 'Next Day Service' for most UK deliveries. Orders sent via 'DPD Local - Next Day Service' will be fully tracked with a 1-hour delivery timeslot on the day of delivery. Standard delivery is Monday to Friday.

Saturday delivery can be selected at checkout for £19.95.

Small items and LP's may be sent using Royal Mail.

Large/heavy items may be sent using TNT Express.

For all other countries please visit the 'Delivery Information' link in the footer.

Occasionally, due to stock demand, we can sell out. If this occurs when you make a purchase, we will inform you quickly. Most out of stock items are available for dispatch within 3 working days. If your purchase is urgent, please contact us to check availability.

Customer Reviews

Perreaux Prisma 350 Stereo Power Amplifier

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