Parasound HALO A 21+ 2-kanavainen päätevahvistin (2 x 300W), hopea

HALO A 21+ (silver) features (Changes from the original A 21→A 21+):
– 250 → 300 Watts (8Ω)
– 400 → 500 Watts (4Ω)
– 750 → 1000 Watts (bridged)
– Filter cap: 88,000 uF → 108,000 uF
– S/N: 112dB → 115 dB
– THD (at full power): 0.2% → 0.1%
– Crosstalk (20kHz): 63dB → 70dB
– Transformer size: 1.2 kVA → 1.3 kVA
– Weight: 60 LB → 71 LB
– Refined Halo cosmetic with aluminum end caps & gold highlights
– Updated rear panel with heavy duty speaker terminals from JC 5
– Upgraded internal gold on gold audio connections
– Updated auto turn on circuit
All Features:
– 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 rectifiers
– Automatic turn-on by 12 V trigger or audio sensing
– 4 rack space chassis with rear carry handles
– Rack mount hardware is included