Parasound Halo A 21+
Features
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
PRODUCT DETAILS
Technical Specifications
Power Output – Stereo Mode (0.1% THD)-
300 watts x 2, 8 Ω both channels driven
500 watts x 2, 4 Ω both channels driven
Power Output – Bridged Mode (0.1% THD)-
1000 watts x 1, 8 Ω
Bridged 4 Ω operation is not recommended
Power measurement are at 120 VAC-
0.1% THD, RMS continuous power,
full audio band (20 Hz - 20 kHz)
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 %
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
Physical Specifications
Dimensions-
Width: 17-5/8" (448 mm)
Height without feet: 7-1/8" (181 mm)
Height with feet: 7-3/4" " (197 mm)
Depth: 20" (508 mm)
Depth with cables: 21-1/2" (546 mm)
Net Weight- 71 lb. (32.2 kg)
Shipping Weight- 88 lb. (39.9 kg)
Power Requirement-
Standby: 1 Watt
Idle (no music playing): 160 Watts
Typical Listening levels: 300 Watts
Maximum: 1400 Watts
