Parasound A21 Plus Stereo Power Amplifier
Parasound A21 Plus Stereo Power Amplifier
Parasound A21 Plus Stereo Power Amplifier
Parasound A21 Plus Stereo Power Amplifier
Parasound A21 Plus Stereo Power Amplifier
Parasound A21 Plus Stereo Power Amplifier
Parasound A21 Plus Stereo Power Amplifier
Parasound A21 Plus Stereo Power Amplifier

Brand: Parasound

Parasound A21 Plus Stereo Power Amplifier

Regular price $5,995.00 Save $-5,995.00
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FEATURES
  • 300 watts x 2 @ 8 Ω RMS, both channels driven
  • 500 watts x 2 @ 4 Ω RMS, both channels driven
  • 1000 watts x 1 @ 8 Ω, in bridged mode
  • Circuitry designed by legendary John Curl
  • High bias Class A/AB operation
  • 60 amperes peak current per channel
  • Stable with speaker impedance dips to 1.5 Ω
  • Balanced inputs with discrete circuits
  • CHK Infinium, custom 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
  • 16 beta-matched 15 ampere, 60 MHz bipolar output transistors
  • 1.3 kVA shielded toroid transformer w/ independent windings for each channel
  • Independent power supplies for input stage, driver stage and output stage
  • 108,000 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
  • 4 rack space chassis with rear carry handles
  • Rack mount hardware is included
  • Available in silver or black

SPECIFICATIONS

  • Dimensions Width:
    17-5/8" (448 mm) Height without feet: 7-1/8" (181 mm) Height with feet: 7-3/4" " (197 mm) Depth: 20" (508 mm) Depth with cables: 21-1/2" (546 mm)
  • Net Weight:
    71 lb. (32.2 kg)
  • Power Output - Stereo Mode:
    (0.1% THD) 300 watts x 2, 8 Ω both channels driven 500 watts x 2, 4 Ω both channels driven
  • Power Output – Bridged Mode:
    (0.1% THD) 1000 watts x 1, 8 Ω Bridged 4 Ω operation is not recommended
  • Power measurement are at 120 VAC:
    0.1% THD, RMS continuous power, full audio band (20 Hz - 20 kHz)
  • Current Capacity:
    60 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):
    < 0.1 % at full power < 0.03 % at typical listening levels

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