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MSRP: $4500
Price: $3000
Parasound Halo A-51, 5 channel poweramp for sale in excellent condition. Very sweet and powerful amplifier. Replacement box can be ordered from Parasound for $70.
Audioholics claims it'll go up against $10,000+ amplifiers!
5 x 250 wpc @ 8 ohms
5 x 400 wpc @ 4 ohms
Parasound A-51 A51 A 51
Circuitry designed by legendary John Curl
THX Ultra2 certified
High bias Class A/AB operation
Balanced inputs with discrete circuits and XLR connectors
Direct Coupled - no capacitors or inductors in signal path
Complementary MOSFET driver stage and JFET input stage
40 beta-matched 15 amp, 60 MHz bipolar output transistors
2.2 kVA encapsulated toroid power transformer with independent secondary windings for each channel
164,000 ΅F 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
Gold-plated RCA input jacks; ground lift switch
Auto turn-on by 12v trigger or audio signal
Specs: Continuous power output:
250 watts RMS x 5, 20 Hz - 20 kHz, 8 O, all channels driven
400 watts RMS x 5, 20 Hz - 20 kHz, 4 O, 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:
130 V/΅second
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 Lev
Input impedance:
47 k O unbalanced; 94 k O balanced
S/N ratio:
112 dB, input shorted, IHF A-weighted
Damping factor:
> 1100 at 20 Hz
Voltage:
110V - 120V
Dimensions:
17-1/4" w x 7-5/8" h x 20" d, 7" h without feet
Net weight: 80 lb.
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