Parasound Halo A31 Three-Channel Power Amplifier
Parasound Halo A31 Three-Channel Power Amplifier
Sale price$4,199
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Parasound Halo A31 Three-Channel Power Amplifier
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
Specifications
| 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 |
| Current Capacity | 60 amperes peak per channel |
| Power Bandwidth | 5 Hz - 100 kHz, +0/-3 dB at 1 watt |
| Total Harmonic Distortion | < 0.2 % at full power |
| IM Distortion | < 0.04 % (balanced 16 V rms) |
| Slew Rate | > 130 V/µsecond |
| Dynamic Headroom | > 1.5 dB |
| Interchannel Crosstalk | > 78 dB at 1 kHz > 63 dB at 20 kHz |
| Input Sensitivity | 1 V for 28.28 V (THX Reference) |
| Input Impedance | 47 k Ω unbalanced 94 k Ω balanced |
| S/N Ratio | 112 dB, input shorted, IHF A-weighted |
| Damping Factor | > 1100 at 20 Hz |
| Dimensions | 17-1/2" w x 7-5/8" h x 20" d 7" h without feet |
| Net Weight | 65 lb. |
| Shipping Weight | 79 lb. |
Description
Description
Parasound Halo A31 Three-Channel Power Amplifier
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
Specifications
Specifications
| 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 |
| Current Capacity | 60 amperes peak per channel |
| Power Bandwidth | 5 Hz - 100 kHz, +0/-3 dB at 1 watt |
| Total Harmonic Distortion | < 0.2 % at full power |
| IM Distortion | < 0.04 % (balanced 16 V rms) |
| Slew Rate | > 130 V/µsecond |
| Dynamic Headroom | > 1.5 dB |
| Interchannel Crosstalk | > 78 dB at 1 kHz > 63 dB at 20 kHz |
| Input Sensitivity | 1 V for 28.28 V (THX Reference) |
| Input Impedance | 47 k Ω unbalanced 94 k Ω balanced |
| S/N Ratio | 112 dB, input shorted, IHF A-weighted |
| Damping Factor | > 1100 at 20 Hz |
| Dimensions | 17-1/2" w x 7-5/8" h x 20" d 7" h without feet |
| Net Weight | 65 lb. |
| Shipping Weight | 79 lb. |
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