Polk Audio Soundbars

Baltimore brand founded in 1972 by three Johns Hopkins graduates, and for decades one of the biggest names in American speaker retail.

Founded: 1972
Founders: Matthew Polk, George Klopfer, Sandy Gross
Headquarters: Baltimore, Maryland, United States
Manufacturing: Built in Asia
Parent company: Harman International (Samsung)
How to buy: Sold through specialist hi-fi dealers, online retailers and custom installers
Known for: SDA Stereo Dimensional Array, high value per dollar, a large presence in American retail

Currently, we have 4 Polk Audio amplifiers in our database. Below you can find the list with their main specs and links to their review pages.

Polk Audio Soundbar

Model	Watts RMS (8Ω)	Amp Class	DAC	Phono
Polk Audio MagniFi Max AX	-	-	-	-
Polk Audio MagniFi MAX AX SR	-	-	-	-
Polk Audio MagniFi Mini AX	-	-	-	-
Polk Audio Signa S4	-	-	-	-

About Polk Audio

Polk Audio started in Baltimore in 1972 and grew into one of the defining mass-market American speaker brands. Its most interesting engineering was SDA, the Stereo Dimensional Array, which fed each channel a delayed and inverted portion of the other to cancel the crosstalk that reaches each ear from the wrong speaker - an attempt to give loudspeakers the channel separation headphones get for free. SDA models are still sought after and modified by enthusiasts.

Three Johns Hopkins graduates who started by building speakers for a Baltimore renaissance fair. Sandy Gross went on to co-found Definitive Technology and GoldenEar.

Polk is one of the American brands most people over forty had in the house at some point, which gives it a nostalgia value the specifications do not capture.

Part of Sound United; passed to Masimo in 2022 and to Harman in 2025.

Notable models: Monitor series, SDA SRS, RTi, Legend L100, Signature Elite.

Official Polk Audio website

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