What class is this amplifier? A previous answer says class a/b but the description says class D...

It is a Class A B amplifier, definitely not Class D. It likely has a digital switching circuit in there somehow but the outputs sections are old-fashioned boat anchor type. If it was a Class D digital amplifier you'd have all that power and about a quarter of the weight.

im Trying to power 6 speakers in 3 zones in a restaurant. Can this unit play to all zones at the same time or is it only 1 zone at a time powered?

Yes, this unit can play to all zones at the same time.

What class is this amplifier? class a/b, class d?

Hello! This amplifier is class a/b.

I have six different rooms with speakers wired. Can I use this to power and turn on/off rooms? I.e. kitchen and living room on and dining room off?

The six zones, or 12 channels, share a common power supply and turn-on method either manually switched (on the front), auto sensing, or from a 12-volt trigger (hard wired). You can select a common source (1 or 2) or connect an independent source per channel or zone but you are restricted to the turn-on option you select for all. Your best bet would be to use in-wall volume controls.

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OSD Audio Nero Max12: 6-Zone, 6-Source Amplifier 80W Power, Multi-Room Control, App Integration for iOS & Android, Expand up to 18 Zones, Control4 Driver Support

OSD Audio Nero Max12: 6-Zone, 6-Source Amplifier 80W Power, Multi-Room Control, App Integration for iOS & Android, Expand up to 18 Zones, Control4 Driver Support

Product ID: 407644091

📱App control for iOS & Android

🔊80W per channel power

🔗Expand up to 18 zones

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Description

🎶 Elevate every room with power, control, and style — don’t just listen, own the soundscape!

SMART HOME READY - Integrates smoothly with popular automation systems via RS232 for centralized, hands-free control.
SCALE WITHOUT LIMITS - Expandable up to 18 zones with additional amps—perfect for growing homes or dynamic commercial spaces.
POWER YOUR WHOLE SPACE - Delivers crisp, room-filling 80W per channel across 6 independent zones for seamless multi-room audio.
PLUG PLAY VERSATILITY - Supports 6 different audio sources including RCA, Aux, and Optical inputs for ultimate content flexibility.
TOTAL CONTROL IN YOUR HANDS - Manage volume, source, and zone grouping effortlessly via the sleek OSD Control App on your smartphone or tablet.

The OSD Audio Nero Max12 is a professional-grade 6-zone, 6-source multi-room amplifier delivering 80W per channel at 4 ohms. Designed for both residential and light commercial use, it offers app-based control for iOS and Android, supports smart home integration via RS232, and can expand up to 18 zones. With multiple input options and optional in-wall keypads, it provides flexible, high-quality audio distribution tailored for modern connected lifestyles.

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Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to France.

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ASIN	B08V4F9HYF
Best Sellers Rank	#142,253 in Electronics ( See Top 100 in Electronics ) #437 in Home Audio Amplifiers
Item model number	MAX12
Manufacturer	OSD Audio
Package Dimensions	55.88 x 54.61 x 22.86 cm; 14.24 kg

OSD Audio Nero Max12: 6-Zone, 6-Source Amplifier 80W Power, Multi-Room Control, App Integration for iOS & Android, Expand up to 18 Zones, Control4 Driver Support

Description

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Common Questions