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Full System Amplification
4 Channel Amplifiers
4-channel amplifiers for front + rear builds or 3-channel mode (front stereo plus bridged subwoofer). Class AB and Class D options.
Authorized Dealer
Every amplifier is brand new with the full manufacturer warranty.
Power Matching
Send us your subwoofer or speaker specs. We'll recommend the right amplifier at the right impedance before you buy.
Hands-On Expertise
Direct support from staff who designs, builds, and competes with these systems. Honest recommendations, not upsells.
Fast Shipping from TN
In-stock orders ship within 1-2 business days from our Tullahoma, Tennessee warehouse.
Decision Shortcut
Find Your Match
Curated picks matched to common build goals
Best Entry 4-Channel
US Acoustics
US Acoustics Lisa | 4 Channel Class AB Amplifier | 4 x 50w
Class AB 4x50W at $159.99. The accessible entry into proper 4-channel amplification.
$ 159.99
View DetailsBest Value 4-Channel
Prodigy Audio
Prodigy Audio 1200 Watt 4 Channel Amplifier | NB300.4
Class D 1200W (4x300W) at $416.99 on sale. Strong power-to-price for high-power 4-channel builds.
$ 416.99 $ 500.99
View DetailsBest Compact 4-Channel
Wavtech
Wavtech link500.4mini 4 Channel Amplifier
Class D 4-channel in compact chassis at $449.99 on sale. For space-constrained installs.
$ 449.99 $ 499.99
View DetailsBest SQ Class D
Image Dynamics
Image Dynamics SQ800.4 800W 4ch. Full Range Digital Amplifier
800W Class D engineered for SQ-focused builds at $469.99. Matched to Image Dynamics components.
$ 469.99
View DetailsBest Mid-Tier SQ
Tru Technology
Tru Technologies Tungsten 4 Channel Amplifier
US-built Class AB 4-channel at $1,399.99. Reference circuit topology at the SQ-focused tier.
$ 1,399.99
View DetailsBest Reference Class AB
Tru Technology
Tru Technologies Tungsten 4 Channel Amplifier
Reference Class AB 4-channel at $2,399.99. The audiophile flagship for full-range speaker amplification.
$ 1,399.99
View DetailsShop the Lineup
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Rainbow
Rainbow Audio SL-M2 2 channel micro amplifier
$ 89.99 $ 549.99
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Rainbow Audio Dream 0.5K Mono Class D Amplifier
$ 89.99 $ 399.99
US Acoustics
US Acoustics Lisa | 4 Channel Class AB Amplifier | 4 x 50w
$ 159.99
US Acoustics
US Acoustics Wendy | 2 Channel Class AB Amplifier | 2 x 75w
$ 159.99
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Rainbow
Rainbow Audio SL-M2 2 channel micro amplifier
$ 89.99 $ 549.99
US Acoustics
US Acoustics Wendy | 2 Channel Class AB Amplifier | 2 x 75w
$ 159.99
US Acoustics
US Acoustics Andrea | 2 Channel Class AB Amplifier | 2 x 150w
$ 289.99
Arc Audio
Arc Audio Nighthawk 2-Channel Amplifier | 800W | Class D
$ 699.99 $ 749.99
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