Parasound Halo A52+

The newly updated A52+ maintains the award-winning performance of its predecessor, while offering an incredible 44% increase in power. According to Home Theater Review, the original A52 was praised as a "truly musically engaging amplifier with an alter ego that likes to blow stuff up." And now, with even more power at its disposal, the A52+ can deliver even more dynamic and explosive sound while retaining its graceful and captivating musicality.

Key Features:

• 180 watts RMS x 5 @ 8 Ω
• 225 watts RMS x 2 @ 8 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
• Hand-matched JFETs for input stage
• Hand-matched MOSFETs for driver stage

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 

Power measurements parameters with 120VAC
0.05% THD, RMS continuous power,
full audio band (20 Hz - 20 kHz

Current Capacity:
45 amperes peak, per channe

Dynamic Headroom:
>1.5d

Slew Rate
> 130 volts per microsecon

Frequency Response
5 Hz - 100 kHz, +0/-3 dB
20 Hz - 20 kHz, +0/-0.3 d

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 kH

Input Impedance
Unbalanced: 47 kΩ
Balanced: 94 kΩ, 47 kΩ per le

Input Sensitivity for 28.28 V Output into 8 Ω
Unbalanced: 1 V
Balanced: 1 V per leg
Total Gain: 29 d

S/N Ratio
> 112 dB, input shorted, IHF A-weighted
> 102 dB, input shorted, unweighte

Damping Factor
> 1100 at 20 H

DC Trigger Requirements
+9 Vdc to +12 Vdc, 5 mA 

Audio Trigger Requirements
2 mV - 10 m

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