HALO A21+ power amp

Save £1,800.00

Price:
Sale price£4,999.00 Regular price£6,799.00

The Halo A21+ has two channels providing 250 watts per channel into 8 Ω, it delivers breathtaking audio performance. The high bias Class A/AB operation ensures accurate and detailed sound reproduction, while the stable operation into 2 Ω loads allows for versatility in speaker configurations. The direct-coupled design, free from capacitors in the signal path, preserves signal integrity and enhances transparency. With balanced XLR and unbalanced RCA inputs and A/B speaker terminals, it offers flexibility and compatibility. Experience pure power and fidelity with the Halo A21+ power amplifier.

Currently shipping from our European warehouse - please allow 7 days for delivery.

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
Available in black

Power Output - (0.05% THD, 20Hz - 20kHz): 300 watts x 2 @ 8 Ω (RMS), 500 watts x 2 @ 4 Ω (RMS), Bridged Mode (0.06% THD) 1000 watts x 1, 8 Ω (Bridged 4 Ω not recommended)

Frequency Response: 20 Hz - 20 kHz, +0 / -0.25 dB
Total Harmonic Distortion (20 Hz - 20 kHz): < 0.03 %
Interchannel Crosstalk:   -70dB at 20 kHz,  -80dB at 1 kHz
S/N Ratio – Line Inputs: > 115 dB, input shorted, IHF A-weighted
Dimensions H x W x D: 197mm (with feet), 438 mm, 546 mm (with cables connected)
Weight: 32.2 kg

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