Parasound Halo Silver Mono Power Amplifier

Product Overview

Changes from the JC 1 to JC 1+

400 ? 450 Watts @ 8O

800 ? 850 Watts @ 4O

1200 ? 1300 Watts @ 2O

Filter capacitance: 132,000 ? 198,000 uF

Transformer capacity: 1.9 ? 2.1 kVA

Output transistors: 18 ? 24 Sanken 60Mz devices

Peak current: 135 ? 180 amps

Weight: 64 ? 83 lbs net

Bybee Music Rails™ active high frequency noise filters

John Curl driver stage employs a new cascode circuit design

FR-408 input circuit board material improves HF signal integrity

Gain switch to select 29 dB or 23 dB of gain

R-core power transformer for input stage

Input circuit board is shielded

Double thickness copper on output/power supply circuit boards

Gold-plated internal audio signal path connectors

Custom CHK Infinium speaker binding posts

Looping Neutrik XLR output for easier bi-amping

Front panel power indicator LED

Updated auto turn on circuits with 3.5mm 12V trigger jacks

All Features:

Circuitry designed by legendary John Curl

Ultra-high bias Class A/AB operation

25 watts of pure Class A power

Stable with speaker impedance dips below 1O

Bybee Music Rails™ - active high frequency filters for input stage

New John Curl driver stage employs a cascode circuit for greater open loop bandwidth & superior linearity

Gain switch to select 29 dB or 23 dB gain for optimum compatibility with high gain preamps or extremely efficient speakers

R-core transformer for input stage suppresses noise on power line

6 massive 33,000 uF Nichicon Gold Tune filter capacitors for output stage

22,400 uF input stage power supply filter capacitors, independent of the main power supply

Dual CHK Infinium, custom 5-way speaker binding posts for easy bi-wiring

Neutrik locking XLR balanced input & loop output jacks

Vampire 24k gold-plated RCA input & loop output jacks

Direct-coupled signal path, no capacitors or inductors in the audio path

JFET input stage, MOSFET driver stage

24 beta-matched 15 ampere, 230V, 60 MHz bipolar output transistors

2.1 kVA shielded toroid power transformer with premium H18 grade core

Independent power supplies for input stage, driver stage & output stage

Full power is rated all the way down to 2Hz for unrestricted low-end bass

Harris hyper-fast soft-recovery bridge diode rectifiers

REL & Nichicon Muse capacitors

DC servo & relay protection circuits

AC turn-on inrush surge protection with relay bypass

Automatic turn-on by 12 V trigger or audio sensing

4 rack space chassis with rear carry handles

Rack mount hardware is included

Available in silver or black

Useful Documents