Power amplifiers stereo — Parasound HALO A23+

The HALO A23+ is a stereo power amplifier from Parasound, part of the brand's well-regarded Halo series, built with an exceptional damping factor and an extraordinarily wide bandwidth. The HALO A23+ brings Parasound's more accomplished current engineering to two-channel power amplification.

Key specs that matter

Input sensitivity is 1,000mV, with input impedance at 66k ohms balanced or 33k ohms single-ended. Output power is 160W into 8 ohms, rising to 240W into 4 ohms. Frequency response spans an extraordinary 5Hz to 100,000Hz within plus-or-minus 3dB. Total harmonic distortion plus noise is under 0.06% with full global feedback, and a remarkable damping factor exceeding 800. At 437 x 388 x 105mm and 12.2kg, the HALO A23+ maintains a manageable stereo amplifier chassis for its considerable output capability.

Sound and use context

Expect exceptional control combined with substantial power delivery reflecting the remarkable damping factor exceeding 800, consistent with Parasound's well-regarded Halo-series engineering standards.

Pairing

The substantial 160/240W output combined with the exceptional damping factor suits demanding loudspeaker loads directly.

Alternatives

Parasound's own JCA100 offers a monoblock alternative within the same broader amplifier catalogue for buyers wanting dedicated per-channel amplification instead.