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Parasound Halo A 31 Black 3-Channel Power Amplifier - A31B
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Abt Model: A31BLK
UPC: 791084201109
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Parasound A31B Halo A 31 Black 3-Channel Power Amplifier
The Halo A31 by Parasound is a high-performance three-channel power amplifier that delivers exceptional audio quality and power output. Designed with precision and crafted with care, this amplifier is perfect for audio enthusiasts who demand nothing but the best. With its impressive power capacity and versatile connectivity options, the Halo A31 is sure to enhance your audio experience to new heights.
Features
- 250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms
- Adjustable gain for up to +6db over THX Reference level
- Unbalanced RCA and balanced XLR inputs
- Circuitry designed by legendary John Curl
- High bias class A/AB operation
- Direct coupled (no capacitors or inductors in signal path)
- Complementary MOSFET driver stage and JFET input stage
- 24 beta-matched 15 amp, 60 MHz bipolar output transistors
- 1.5 kVA encapsulated toroid power transformer with independent secondary windings for each channel
- 98,400 µF power supply filter capacitance
- DC Servo and relay protection circuits
- AC present, channel status, high temperature indicators
- Heavy-duty 24k gold-plated 5-way speaker terminals
- THX Ultra2 certified
- Auto turn-on by 12v trigger or audio signal
- 4u Chassis, carry handles, rack mounting adapter included
California customers:
General
Type
Power Amplifier
Number of Channels
3
Total Harmonic Distortion (THD)
< 0.2 % at full power
Signal to Noise Ratio
112 dB, input shorted, IHF A-weighted
Continuous Power Output
250 watts RMS x 3, 20 Hz - 20 kHz, 8 Ω, all channels driven, 400 watts RMS x 3, 20 Hz - 20 kHz, 4 Ω, all channels driven
Intermodulation Distortion (IM)
< 0.04 %
Damping Factor
> 1100 at 20 Hz
Input Sensitivity
1 V for 28.28 V (THX Reference)
Input Impedance
47 k Ohms unbalanced; 94 k Ohms balanced
Dynamic Headroom
> 1.5dB
Bandwith
5 Hz - 100 kHz, +0/-3 dB at 1 watt
Current Capacity
60 amps peak, per channel
Slew Rate
> 130 V/second
Inter-Channel Crosstalk
> 78 dB at 1 kHz;, > 63 dB at 20 kHz
Approximate Weight
Unit Weight (lbs.)
65
Shipping Weight (lbs.)
79
Approximate Dimensions
Height (in)
7.63
Width (in)
17.5
Depth (in)
7
Brochure
Key Features
- High Bias Class A/AB Operation
- 24 Beta-Matched 15 Amp, 60 MHz Bipolar Output Transistors
- DC Servo And Relay Protection Circuits
- THX Ultra2 Certified
- Auto Turn-On By 12v Trigger Or Audio Signal
- Black Finish
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