How to Connect an Amplifier to a Soundbar

The "amplifier to soundbar" market is defined by a significant divergence between mass-market convenience and high-end customization. While the majority of the market has moved toward active (self-amplified) soundbars, a persistent and high-value niche for passive soundbars connected to external amplifiers remains for audiophiles and custom home theater installations. Gminsights Imarcgroup

Market Trends & Growth

* Market Size: The global soundbar market is projected to reach approximately $9.3 billion in 2026, growing at a CAGR of 7% to 9.5%. Imarcgroup Grandviewresearch

* Dominance of Active Units: Active soundbars hold over 86% of the market share because they eliminate the need for a separate amplifier, offering a "plug-and-play" solution for average consumers. Grandviewresearch

* Passive Niche Persistence: Despite the rise of active units, passive soundbar systems (which require an external AV receiver/amplifier) still commanded a significant portion of specialized installation markets in 2025. Mordorintelligence

* Smart Integration: High-growth segments include soundbars with Wi-Fi 6E and AI-driven room calibration, which use internal processing (amplification) to optimize audio for specific room acoustics. Gminsights Grandviewresearch

Product Insights: Connecting Amplifiers to Soundbars

The relationship between amplifiers and soundbars typically falls into three categories:

Category	Description	Primary Use Case
Passive Soundbars	Essentially three speakers (Left, Center, Right) in one bar. They require an external amplifier or AV receiver to function. Youtube	High-end home theaters where users want the sleek look of a soundbar but the power of a dedicated receiver.
Active Soundbars	Built-in amplifiers. Generally cannot be connected to an external amplifier unless they have a specific bypass mode or "pre-amp" inputs (rare). Reddit	Standard living room setups, gaming, and general TV audio upgrades.
Hybrid DIY	Enthusiasts often attempt to convert active soundbars to passive or use line-outs to add external power, though this often voids warranties. Reddit	Custom audio projects and repurposing older hardware.

Key Technology Drivers for 2026

* eARC Standard: High-bandwidth HDMI eARC is now standard, allowing soundbars to receive high-bitrate audio (Dolby Atmos) directly from the TV, further reducing the need for an external amplifier as a switching hub. Nytimes

* Compact High-Power Transducers: Innovations like Sonos' Sound Motion technology allow soundbars to deliver bass performance that previously required large enclosures or external sub-amplifiers. Worldwidestereo

* Wireless Ecosystems: Multi-room audio protocols (Sonos, HEOS, MusicCast) allow soundbars to pair wirelessly with rear speakers and subwoofers, effectively creating a distributed amplification system without cables. Avsforum