Parasound Halo A 21+ Silver Stereo Power Amplifier

* 300 watts x 2 @ 8 Ω RMS, both channels driven * 500 watts x 2 @ 4 Ω RMS, both channels driven * 1000 watts x 1 @ 8 Ω, in bridged mode * Circuitry designed by legendary John Curl * High bias Class A/AB operation * 60 amperes peak current per channel * Stable with speaker impedance dips to 1.5 Ω * Balanced inputs with discrete circuits * CHK Infinium, custom 5-way speaker binding posts * Gold-plated RCA input & loop output jacks * Direct-coupled signal path, no capacitors or inductors * DC Servo and relay protection circuits * AC turn-on inrush surge protection with relay bypass * JFET input stage, MOSFET driver stage * 16 beta-matched 15 ampere, 60 MHz bipolar output transistors * 1.3 kVA shielded toroid transformer w/ independent windings for each channel * Independent power supplies for input stage, driver stage and output stage * 108,000 µF filter capacitors for output stages * Full power is rated all the way down to 5Hz for unrestricted low-end bass * Harris hyper-fast soft-recovery bridge diode recti...