Parasound Halo A 21+ Stereo Power Amplifier - Douglas HiFi Perth
Parasound Halo A 21+ Stereo Power Amplifier rear view - Douglas HiFi Perth
Parasound Halo A 21+ Stereo Power Amplifier Silver - Douglas HiFi Perth
Parasound Halo A 21+ Stereo Power Amplifier internal view - Douglas HiFi Perth
Parasound Halo A 21+ Stereo Power Amplifier Silver rear view- Douglas HiFi Perth
Parasound Halo A 21+ Stereo Power Amplifier

Parasound Halo A 21+ Stereo Power Amplifier

Regular price $6,795.00
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Parasound Halo A 21+ Stereo Power Amplifier

The 'Halo' range by Parasound is their crowning achievement. The Halo A21+ is a refinement of the legendary John Curl designed A21 power amplifier. The A21+ continues the authoritive, real world speaker driving force of the original design and builds upon this with increased power output, bigger power supply with improved distortion and signal to noise ratio. This translates to more control, better dynamics and more detail.

We have found the Parasound A21+ to have great control over every speaker we have paired it with (including low Impedance, low Sensitivity models) and feel confident that you will too. If you're after a big, powerful sound with plenty of grip and drive this amp is sure to impress. Winning many awards including the coveted Stereophile class A list for power amplifiers.

Specifications

Direct Coupled with no Capacitors or Inductors in the Audio signal Path

Circuitry designed by John Curl

Stable with Speaker Impedance dips to 1.5 ohms

Balanced inputs with discrete circuits 

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 %

TIM
Unmeasurable

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

 

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

Available in Black and Silver