July 16, 2025 The Audio Tailor

Parasound HALO A23+ Power Amplifier Review: Unrivalled Class A/AB Power

Welcome to our Parasound HALO A23+ Power Amplifier Review, where we delve into the exceptional power and precision this Class A/AB powerhouse brings to your hi-fi system. At our The Audio Tailor, we’re passionate about matching audiophiles with gear that elevates every note, and the HALO A23+ does exactly that.

Parasound HALO A23+ Power Amplifier

Design & Build Quality

The Halo A23+ inherits Parasound’s famed industrial aesthetic, updated with sleek aluminium end caps and gold highlights. Its 2U chassis houses a robust 1.1 kVA shielded toroidal transformer with independent windings per channel. The rear panel sports heavy-duty 24k gold-plated 5-way binding posts and precision gold-plated RCA inputs, ensuring minimal signal loss and secure speaker connections.

Performance & Sound Signature

Driven by John Curl’s legendary circuit design, the A23+ delivers 160 watts per channel into 8 Ω with a THD of just 0.06%. High-bias Class A/AB operation up to 45 amps peak current ensures tight bass grip and a natural midrange bloom. The direct-coupled signal path, free from capacitors or inductors, guarantees transparency from a sonorous 5 Hz sub-bass right through to 100 kHz. Whether it’s delicate chamber music or thunderous orchestral crescendos, the A23+ reveals every nuance with stunning clarity.

Technical Deep Dive

Power Output: 160 W×2 @ 8 Ω, 240 W×2 @ 4 Ω, 500 W bridged @ 8 Ω
High-bias Class A/AB: 54,400 µF filter capacitors per channel
Direct-coupled Signal Path: No capacitors or inductors
Inputs: Balanced XLR (66 kΩ) & unbalanced RCA (33 kΩ)
Connectivity: 24k gold-plated binding posts & RCA jacks
Triggering: 12 V DC or audio-sense auto-turn-on
Transformer: 1.1 kVA shielded toroid with independent windings
Frequency Response: 5 Hz – 100 kHz, +0/-3 dB
Distortion: THD <0.06 %, IMD <0.04 %, crosstalk >70 dB @ 20 kHz

Who Should Consider the HALO A23+

If you’re an audiophile craving a high-current amplifier to drive demanding speakers or subwoofers, the HALO A23+ is your match. It’s ideal for two-channel stereo purists, home theatre setups seeking headroom, or anyone wanting to future-proof their system.

Elevate Your Audio Journey

Ready to experience the Parasound HALO A23+ for yourself? Explore the full specifications and secure yours online via our Parasound HALO A23+ product page. For personalised consultation, call our team on 1300 308 711 or email sales@theaudiotailor.com.au. We’re here to craft your ultimate listening experience.