Parasound HALO A51 5-channel power Amp 400W x 5 into 4 Ω Black

Bring the Cinematic Experience Home

Add the A51 to your home theater and watch—or listen—everything transform. This five‑channel amp effortlessly boosts your AVR, powering your front and surrounds with clean, room-filling performance that punches well above its price.

Delivering 250 W per channel into 8 Ω (and 400 W into 4 Ω), it replaces underpowered receivers and makes your movies and music hit harder, feel deeper, and sound more alive.

💬 What Users Say

• “Midrange was totally seductive… with music, the A51 radiated sweetness and light. With action films, it rained thunder and lightning.”
• “Uncompromising audiophile performance at a reasonable price.”
• “Huge presence and poise—perfect for immersive home systems.”

🛠️ Where It Fits in Your System

The A51 connects via five balanced XLR or unbalanced RCA inputs to your AV processor or receiver's pre-outs. It provides serious power for 5.1 setups—front, center, and surrounds—letting your processor handle the switching while the amp delivers the strength.

It’s ideal for elevating your core speakers in a surround system, or combining with a stereo amp for a powerful multichannel home theater without compromise.

✨ What Makes It Special

• 250 Wpc into 8 Ω; 400 Wpc into 4 Ω—room-filling power with ease
• THX Ultra2 certified for theatrical-grade performance
• High-bias Class A/AB Circuit with direct-coupled signal path—no capacitors or inductors in the audio path
• Massive toroidal power transformer with independent channel supplies and 164,000 µF filter capacitance—delivers 60 A peak per channel
• Robust connectivity: five balanced XLR and five unbalanced RCA inputs, plus 12 V trigger and auto-sensing wake-up
• Protection circuitry, heavy-duty speaker terminals, and rack-mount hardware for installation ease

🔍 What You’ll Notice

• Explosions hit with visceral impact and clarity
• Dialog is crisp and present—even in busy scenes
• Music plays freely across all channels with unity and detail

🏆 Reviews & Recognition

• Home Theater Review: “Benchmark levels of performance at a reasonable price.”
• Stereophile: praised its “harmonic rightness” and imaging quality

✅ Final Word

The A51 turns a modest AVR into a musical powerhouse. It’s effortless, immersive, and cinematic—perfect for people who want their home theater to sound as thrilling as it looks.