Parasound Halo JC1 Monoblock Amplifier

Parasound Halo JC1 Monoblock Amplifier

********* Price is per monoblock, not per pair. *********


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.W ith 25 watts of pure Class A power and 135 amps of peak current, this amplifier will provide a truly breathtaking 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 8W, 800 watts into 4W, and 1200 watts into 2W. 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.





  • Premier monaural amplifier

  • Circuitry designed by legendary John Curl and CTC Builder

  • Ultra-high bias Class A/AB operation

  • Exclusive two position bias level adjustment

  • Balanced inputs with discrete circuits and XLR connectors

  • Vampire Direct gold-plated OFC RCA input

  • Dual heavy-duty 24k gold-plated 5-way speaker binding posts

  • Direct Coupled - no capacitors or inductors in signal path

  • Complementary MOSFET driver stage and JFET input stage

  • 18 beta-matched 15 amp, 60 MHz bipolar output transistors

  • 1.9 kVA encapsulated toroid power transformer

  • Independent power supplies for input, driver and output stages

  • 18,000 μF filters for driver stage

  • 132,000 µF Nichicon Gold Tune filters for output stage

  • DC Servo and relay protection circuits

  • REL and Nichicon Muse capacitors

  • Harris hyper-fast soft recovery diodes for all bridge rectifiers

  • Auto turn-on by 12v trigger or audio signal trigger

  • Ground lift switch , adjustable turn-on delay

  • 4u Chassis with rear carry handles, rack mounting kit included

  • Premium detachable AWG 12 power cord with silver solder

  • THX Ultra2 certified





  • Continuous power output, 20Hz - 20 kHz:400 watts RMS x 1, 8 Ω800 watts RMS x 1, 4 Ω1200 watts RMS x 1, 2 Ω

  • Class A power output, 20Hz - 20 kHz:25 watts, bias set to high, 8 Ω10 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:17-1/4" w x 7-5/8" h x 20 " d, 7 " h without feet

  • Net weight: 64 lb.