Primare A32 Black Dual Mono Power Amplifier

With the mighty A32, Primare has set foot on truly esoteric ground. This is a massive fully balanced design capable of controlling the...

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Brand Pre-loved
Type Amplifiers
Tags Amplifier

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  • Primare A32 Black Dual Mono Power Amplifier
  • Primare A32 Black Dual Mono Power Amplifier
  • Primare A32 Black Dual Mono Power Amplifier
  • Primare A32 Black Dual Mono Power Amplifier

AU $3,999
 

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With the mighty A32, Primare has set foot on truly esoteric ground. This is a massive fully balanced design capable of controlling the most demanding low-sensitivity speakers - even at the very highest volume levels. The specification is impressive.

Pre-loved in good condition. Comes with accessories and box.

Equipped with a 2kVa toroidal transformer featuring four separate windings, two for each (L/R) channel; a reservoir of 90.000 uF and sixteen bipolar output devices per channel, the A32 is undeniably an elite amplifier in the classic Primare dual/mono mould. Both balanced and unbalanced inputs are provided, as well as twin speaker terminals for bi-wiring, a trigger input and RS232C inputs. If the unbalanced inputs are used the A32 converts the signal to balanced, to take full advantage of its balanced design.

The A32 is a high power fully balanced power amplifier, capable of delivering 250W per channel into an 8 ohm load. Balanced signal transmission means that two signal lines are used, which carry the same signal with opposite phase. Before the output stage the signals are mixed, and since any noise will be present in both lines with identical phase, such distortion products are cancelled out leaving only the pure original signal. Balanced topology therefore keeps the signal as free as possible from interference. The A32 has a dual-mono topology together with a current feedback topology. Excellent 1% MELF resistors from Vishay are used, which in concert with a tight PCB-layout, give the A32 the best possible performance. The circuit is fully-balanced all the way to the output stage and uses active temperaturecompensated current sources, instead of passive resistors. The A32 uses 16 output devices from Toshiba for each channel to ensure high reliability and performance (high current output). These work in high bias class A/B configuration.

The A32’s outputs are fully protected against DC (servo-controlled), high temperature and speaker terminal shorting (the latter by the use of fast-blow fuses). Alternative methods of protection, such as current limiting, affect sonic performance when using low impedance speaker loads.

The amplifier incorporates two different kinds of standby mode. The first is the audiophile standby, in which all the power supplies remain active, only the speaker relay and idle current are lowered. This means that the amplifier will start at optimum performance and will not require any major warm-up time. The second standby mode turns off all of the analogue power supplies and will therefore require a warm-up period before the A32 will perform at optimum levels. This mode is best used if the amplifier remains idle for an extended period of time or if the owner wants to save mains power.

FEATURES:

  • High Current Dual Mono Fully Balanced Power Amplifier.
  • 2000VA toroidal transformer.
  • A total of 180 000 uF electrolytes in the power supply.
  • Dual set of speaker terminals for each channel.
  • Balanced (RCA) and Unbalanced (XLR) inputs.

 

SPECIFICATIONS:

  • Input Impedance 5kohm, RCA and XLR
  • Output Power (both channels driven) 2x250W 8ohms load 20Hz-20Khz
  • 2x400W 4ohms load 20Hz-20KHz
  • THD+N below 0.05% in both cases
  • THD+N 1kHz, 250W
  • 8 ohm load below 0.01%
  • Frequency response 20Hz-100kHz –0.5dB
  • Noise Below –100dBV
  • Gain 26dB unbalanced, 20dB balanced.
  • Trigger input range 4-15V
  • Colour Black
  • Dimensions (With Feet) W x D x H 430mm x 546mm x 216mm
  • Weight 40kg

 


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