Drop the A52+ into your system and the whole room wakes up. Voices lock center‑stage, bass tightens without bloat, and big moments hit with the kind of weight that turns movie night into a grin‑inducing event—no rack overhaul required. Designed by John Curl, the A52+ runs high‑bias Class A/AB in a direct‑coupled topology for effortless clarity. It delivers 180 W x5 into 8 Ω (255 W x5 into 4 Ω) with a custom 1.5 kVA toroidal transformer (independent secondary windings per channel) and 100,000 µF of reserve for clean current on demand. Full power is rated down to 5 Hz, and integration is simple: five XLR + five RCA inputs, plus 12 V trigger or audio‑sense auto‑on for any AVR/processor with pre‑outs. Praised by audiophiles and reviewers alike: “Delivers clear, dynamic sound and has plenty of headroom to handle the explosive effects in movie soundtracks.” — Sound & Vision (Al Griffin).

Power Output - All 5 Channels Driven 180 watts x 5, 8 Ω 255 watts x 5, 4 Ω Power Output - 2 Channels Driven 225 watts x 2, 8 Ω 350 watts x 2, 4 Ω Power measurements parameters with 120VAC 0.05% THD, RMS continuous power, full audio band (20 Hz - 20 kHz) Current Capacity: 45 amperes peak, per channel Dynamic Headroom: >1.5dB Slew Rate > 130 volts per microsecond Frequency Response 5 Hz - 100 kHz, +0/-3 dB 20 Hz - 20 kHz, +0/-0.3 dB Total Harmonic Distortion (THD) < 0.05 % at full power < 0.03 % at typical listening levels IM Distortion < 0.04 % TIM Unmeasurable Interchannel Crosstalk > 78 dB at 1 kHz > 63 dB at 20 kHz Input Impedance Unbalanced: 47 kΩ Balanced: 94 kΩ, 47 kΩ per leg Input Sensitivity for 28.28 V Output into 8 Ω Unbalanced: 1 V Balanced: 1 V per leg Total Gain: 29 dB S/N Ratio > 112 dB, input shorted, IHF A-weighted > 102 dB, input shorted, unweighted Damping Factor > 1100 at 20 Hz “Overall, I really liked Parasound’s Halo A 52+ in every way.” — Stereophile (Kalman Rubinson).