Blaze Audio PowerZone 504 UNI — 500W 4-Channel Installation Amplifier (Universal Voltage)

The Blaze Audio PowerZone 504 is a 500 W, 4-channel analog installation amplifier — the non-DSP workhorse of the PowerZone line in a half-rack 1U chassis with universal 100–240 V mains. Configuration lives on the rear panel: no network, no software, nothing to fail.

Verified specs (per Blaze/Sonance):

• 500 W total: 4×125 W into 4/8 Ω or at 70/100 V — each channel independently switchable lo-Z / hi-Z
• Automatic power sharing across channel pairs (up to 2×250 W)
• Rear 8-position DIP switch configuration, including front-panel gain lockout
• GPIO interface for remote volume and standby from external controllers
• Pascal UMAC Class-D; <0.5 W standby; ErP and Energy Star compliant; UL listed
• Universal mains 100–240 V, 50–60 Hz
• Half-rack 1U: 4.4 × 22 × 33.8 cm, 2.4 kg; rack, surface and rear-support mount kits available
• 5-year parts and labor warranty

Ideal for: background-music and paging zones where a simple, reliable 70 V amplifier is the whole job — shops, cafés, offices and back-of-house. Installation available through LAMIGA.