Parasound(파라사운드) 2채널 파워앰프 A23 +
상품분류 파워앰프 (Power Amplifier)
제조사 Parasound(파라사운드)
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  • Changes from the original A 23→A 23+


  •  

     Features 

    Changes from the original A 23→A 23+

    ·         125 → 160 Watts (8Ω)

    ·         225 → 240 Watts (4Ω)

    ·         400 → 500 Watts (bridged)

    ·         Filter cap: 40,000 uF →54,400 uF

    ·         Crosstalk (20kHz): 63dB → 70dB

    ·         Transformer size: 1.0 kVA → 1.1 kVA

    ·         Refined Halo cosmetic with aluminum end caps & gold highlights

    ·         Updated rear panel with heavy duty speaker terminals from HINT 6

    ·         Upgraded internal gold on gold audio connections

    ·         Updated auto turn on circuit

    All Features

    ·         160 watts x 2 @ 8 Ω RMS, both channels driven

    ·         240 watts x 2 @ 4 Ω RMS, both channels driven

    ·         500 watts x 1 @ 8 Ω, in bridged mode

    ·         Circuitry designed by legendary John Curl

    ·         High bias Class A/AB operation

    ·         45 amperes peak current per channel

    ·         Stable with speaker impedance dips below 2 Ω

    ·         Balanced inputs with discrete circuits

    ·         Heavy-duty 24k gold-plated 5-way speaker binding posts

    ·         Gold-plated RCA input & loop output jacks

    ·         Direct-coupled signal path, no capacitors or inductors

    ·         DC Servo and relay protection circuits

    ·         AC turn-on inrush surge protection with relay bypass

    ·         JFET input stage, MOSFET driver stage

    ·         12 beta-matched 15 ampere, 60 MHz bipolar output transistors

    ·         1.1 kVA shielded toroid transformer w/ independent windings for each channel

    ·         Independent power supplies for input stage, driver stage and output stage

    ·         54,400 µF filter capacitors for output stages

    ·         Full power is rated all the way down to 5Hz for unrestricted low-end bass

    ·         Harris hyper-fast soft-recovery bridge diode rectifiers

    ·         Automatic turn-on by 12 V trigger or audio sensing

    ·         2 rack space chassis with rear carry handles

    ·         Rack mount hardware available separately

    ·         Available in silver or black

     

          SPECS

    • Power Output – Stereo Mode (0.06% THD)
      160 watts x 2, 8 Ω both channels driven
      240 watts x 2, 4 Ω both channels driven
    • Power Output – Stereo Mode (0.9% THD)
      210 watts x 2, 8 Ω both channels driven
      300 watts x 2, 4 Ω both channels driven
    • Power Output – Bridged Mode (0.06% THD)
      500 watts x 1, 8 Ω
      Bridged 4 Ω operation is not recommended
    • Power Output – Bridged Mode (0.9% THD)
      600 watts x 1, 8 Ω
      Bridged 4 Ω operation is not recommended 

      *All Power measurement are at 120 VAC,
      RMS continuous power, full audio band (20 Hz - 20 kHz)
    • Current Capacity
      45 amps peak, per channel
    • Slew Rate
      > 130 volts per microsecond
    • Frequency Response
      5 Hz - 100 kHz, +0/-3 dB
      20 Hz - 20 kHz, +0/-0.25 dB
    • Total Harmonic Distortion (THD)
      < 0.06 % at full power
      < 0.03 % at typical listening levels
    • IM Distortion
      < 0.04 %
    • TIM
      Unmeasurable
    • Inter-channel Crosstalk
      > 85 dB at 1 kHz
      > 70 dB at 20 kHz
    • Input Impedance
      Unbalanced: 33 kΩ 
      Balanced: 66 kΩ,(33 kΩ per leg)
    • Total Gain
      29 dB
    • Input Sensitivity for 28.28 V Out (8 Ω Load)
      Unbalanced: 1 V
      Balanced: 1 V per leg
    • S/N Ratio
      > 112 dB, input shorted, IHF A-weighted
      > 107 dB, input shorted, unweighted
    • Damping Factor
      > 800 at 20 Hz
    • DC Trigger Requirements
      +9 Vdc to +12 Vdc, 5 mA
    • Audio Trigger Requirements
      2 mV - 10 mV
    • XLR Pin Identification
      1 = Ground (Shield)
      2 = Positive
      3 = Negative (Return)
    • Dimensions
      Width: 17-1/4" (437 mm)
      Depth: 15"-1/4" (388 mm)
      Depth, with cables 17" (432 mm)
      Height, with feet: 4-1/8" (105 mm)
      Height, without feet: 3-1/2" (89 mm), 2U
    • Net Weight
      27 lb. (12.2 kg)
    • Shipping Weight
      34 lb. (14.4 kg)
    • Power Requirement
      Standby: <1 Watt 
      Idle (no music playing): 75 Watts 
      Typical Listening levels: 125 Watts
      Maximum: 800 Watts
      110-125 VAC 60 Hz or 220-250 VAC 50 Hz
      AC mains voltage is set on rear panel