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Parasound Halo JC1 Monoblock Power Amplifiers

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Recently traded in and in fantastic condition, however, no boxes. Parasound’s Halo JC 1 Monaural Amplifier is quite possibly the world’s finest power amplifier. Collaborating with legendary audio designer John Curl and the team at CTC Builders, Parasound has created a no-expense-spared componen ...Read more

Recently traded in and in fantastic condition, however, no boxes.

Parasound’s Halo JC 1 Monaural Amplifier is quite possibly the world’s finest power amplifier. Collaborating with legendary audio designer John Curl and the team at CTC Builders, Parasound has created a no-expense-spared component that is setting a new standard for elegance, sonic precision and value.

Manufacturer Site Link: Parasound

£ 5,500.00 each


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With 25 watts of pure Class A power and 135 amps of peak current, this amplifier will provide a truly breath taking audio experience, and in systems where heat dissipation is a concern, a unique bias level adjustment allows for 10 watts of Class A instead of 25 watts. For the most demanding loads, the JC 1 offers 400 watts of power into 8ohm, 800 watts into 4ohm, and 1200 watts into 2ohm.

John Curl’s discrete complementary design employs only the finest parts available including Sanken output transistors, Nichicon Gold Tune capacitors, and Vampire copper wire and RCA connectors. Other features include balanced XLR and unbalanced RCA connectors, a 12v trigger, an audio sensitivity trigger, a variable turn-on delay and a ground lift switch. Advanced circuitry, premier parts selection, unequaled sound quality,and stunning design are bound to secure this amplifier a place in audio history.

Continuous power output, 20Hz - 20 kHz:
400 watts RMS x 1, 8 Ω
800 watts RMS x 1, 4 Ω
1200 watts RMS x 1, 2 Ω

Class A power output, 20Hz - 20 kHz:
25 watts, bias set to high, 8 Ω
10 watts, bias set to low, 8 Ω

Current capacity:
135 amperes peak 

Power bandwidth:
2 Hz - 120 kHz, +0/-3 dB at 1 watt

Total harmonic distortion:
0.15 % at full power

IM distortion: balanced 16 V rms
0.03 %

Slew rate:
> 130 V/µsecond

Dynamic headroom:
> 1.8 dB 

Input sensitivity:
1 V for 28.28 V, THX Reference Level

Input impedance:
100 k Ω

S/N ratio:
>120 dB, IHF A-weighted, bias set to high 
>122 dB, IHF A-weighted, bias set to low 

Damping factor:
> 1200 at 20 Hz

Power Requirement :
250 watts idle 1280 watts full power into 4 Ω

DC trigger output capacity :
+12 Vdc, 150 mA

Dimensions:
17-1/2" w x 7-5/8" h x 20" d, 7" h without feet

Net weight: 64 lb.

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