Parasound Halo A52+ Five-Channel Power Amplifier
Parasound Halo A52+ Five-Channel Power Amplifier
Sale price$4,199
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Parasound Halo A52+ Five-Channel Power Amplifier
Features
- 180 watts RMS x 5 @ 8 Ω
- 255 watts RMS x 5 @ 4 Ω
- 225 watts RMS x 2 @ 8 Ω
- 350 watts RMS x 2 @ 4 Ω
- Class A/AB circuitry designed by legendary John Curl
- Direct coupled - no capacitors or inductors in audio path ensures the cleanest signal
- Balanced XLR inputs with discrete circuits
- Full power is rated all the way down to 5Hz for unrestricted low-end bass
- Custom 1.5 kVA encapsulated toroid power transformer with independent secondary windings for each channel
- Hand-matched JFETs for input stage
- Hand-matched MOSFETs for driver stage
- Beta-matched 15 amp, 60 MHz bipolar output transistors (3 pairs per channel)
- 100,000 µF power supply filter capacitance
- DC Servo and relay protection circuits
- Auto turn on by audio signal or 12V trigger
- Heavy-duty 24k gold-plated, 5-way speaker terminals
- 3U chassis with updated cosmetics, rack mountable with HRA3 (sold separately)
Specifications
| Power Output - All 5 Channels Driven | 180 watts x 5, 8 Ω 255 watts x 5, 4 Ω |
| Power Output - 2 Channels Driven | 225 watts x 2, 8 Ω 350 watts x 2, 4 Ω |
| Power Measurements Parameters with 120VAC | 0.05% THD, RMS continuous power, full audio band (20 Hz - 20 kHz) |
| Current Capacity | 45 amperes peak, per channel |
| Dynamic Headroom | > 1.5 dB |
| Slew Rate | > 130 volts per microsecond |
| Frequency Response | 5 Hz - 100 kHz, +0/-3 dB 20 Hz - 20 kHz, +0/-0.3 dB |
| Total Harmonic Distortion (THD) | < 0.05 % at full power < 0.03 % at typical listening levels |
| IM Distortion | < 0.04 % |
| TIM | Unmeasurable |
| Interchannel Crosstalk | > 78 dB at 1 kHz > 63 dB at 20 kHz |
| Input Impedance | Unbalanced: 47 kΩ Balanced: 94 kΩ, 47 kΩ per leg |
| Input Sensitivity for 28.28 V Output into 8 Ω | Unbalanced: 1 V Balanced: 1 V per leg Total Gain: 29 dB |
| S/N Ratio | > 112 dB, input shorted, IHF A-weighted > 102 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: 17-1/4" (437 mm) Height without feet: 5-1/4" (133 mm) Height with feet: 5-7/8" (149 mm) Depth: 20" (508 mm) Depth with cables: 21-1/4" (540 mm) |
| Net Weight | 55 lb. (25 kg) |
| Shipping Weight | 69 lb. (31.3 kg) |
| Power Requirement | Standby: 1 Watt Idle: 125 Watts Maximum: 1500 Watts |
Description
Description
Parasound Halo A52+ Five-Channel Power Amplifier
Features
- 180 watts RMS x 5 @ 8 Ω
- 255 watts RMS x 5 @ 4 Ω
- 225 watts RMS x 2 @ 8 Ω
- 350 watts RMS x 2 @ 4 Ω
- Class A/AB circuitry designed by legendary John Curl
- Direct coupled - no capacitors or inductors in audio path ensures the cleanest signal
- Balanced XLR inputs with discrete circuits
- Full power is rated all the way down to 5Hz for unrestricted low-end bass
- Custom 1.5 kVA encapsulated toroid power transformer with independent secondary windings for each channel
- Hand-matched JFETs for input stage
- Hand-matched MOSFETs for driver stage
- Beta-matched 15 amp, 60 MHz bipolar output transistors (3 pairs per channel)
- 100,000 µF power supply filter capacitance
- DC Servo and relay protection circuits
- Auto turn on by audio signal or 12V trigger
- Heavy-duty 24k gold-plated, 5-way speaker terminals
- 3U chassis with updated cosmetics, rack mountable with HRA3 (sold separately)
Specifications
Specifications
| Power Output - All 5 Channels Driven | 180 watts x 5, 8 Ω 255 watts x 5, 4 Ω |
| Power Output - 2 Channels Driven | 225 watts x 2, 8 Ω 350 watts x 2, 4 Ω |
| Power Measurements Parameters with 120VAC | 0.05% THD, RMS continuous power, full audio band (20 Hz - 20 kHz) |
| Current Capacity | 45 amperes peak, per channel |
| Dynamic Headroom | > 1.5 dB |
| Slew Rate | > 130 volts per microsecond |
| Frequency Response | 5 Hz - 100 kHz, +0/-3 dB 20 Hz - 20 kHz, +0/-0.3 dB |
| Total Harmonic Distortion (THD) | < 0.05 % at full power < 0.03 % at typical listening levels |
| IM Distortion | < 0.04 % |
| TIM | Unmeasurable |
| Interchannel Crosstalk | > 78 dB at 1 kHz > 63 dB at 20 kHz |
| Input Impedance | Unbalanced: 47 kΩ Balanced: 94 kΩ, 47 kΩ per leg |
| Input Sensitivity for 28.28 V Output into 8 Ω | Unbalanced: 1 V Balanced: 1 V per leg Total Gain: 29 dB |
| S/N Ratio | > 112 dB, input shorted, IHF A-weighted > 102 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: 17-1/4" (437 mm) Height without feet: 5-1/4" (133 mm) Height with feet: 5-7/8" (149 mm) Depth: 20" (508 mm) Depth with cables: 21-1/4" (540 mm) |
| Net Weight | 55 lb. (25 kg) |
| Shipping Weight | 69 lb. (31.3 kg) |
| Power Requirement | Standby: 1 Watt Idle: 125 Watts Maximum: 1500 Watts |
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