Parasound A21 Plus

$8,999.00

Shop All Parasound

Sold Out

Details

Specifications

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

Power Output:
- 300 watts x 2, 8 Ω both channels driven
- 500 watts x 2, 4 Ω both channels driven Power Output
- 1000 watts x 1, 8 Ω
- Bridged 4 Ω operation is not recommended
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
IM Distortion:
- < 0.04 % TIM
- Unmeasurable Inter-channel
Crosstalk:
- > 80 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
Output into 8 Ω:
- Unbalanced: 1 V
- Balanced: 1 V per leg
S/N Ratio:
- > 115 dB, input shorted, IHF A-weighted
- > 110 dB, input shorted, unweighted Damping Factor
- > 1100 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: 448 mm
- Height without feet: 181 mm, (Height with feet: 197 mm)
- Depth: 508 mm, Depth with cables: 546 mm)
Net Weight: 32.2 kg
Shipping Weight: 39.9 kg
Power Requirement:
- Standby: 1 Watt
- Idle (no music playing): 160 Watts
- Typical Listening levels: 300 Watts
- Maximum: 1400 Watts