Most speakers come out of the box and play whatever you put through them, acoustics of the room be damned. The Sonos Era 100 SL runs Trueplay first, analyzing how sound behaves in your specific space before it plays a note, and Prime Day just dropped it to its lowest price ever. Amazon has it at $159, down from its $189 standard price and an all-time low for this microphone-free version of the Era 100 with dual angled tweeters, a powerful midwoofer, Wi-Fi and Bluetooth streaming, and line-in for turntables. No Prime membership required.
What the SL version is, and why it might be the smarter buy
The Sonos Era 100 comes in two versions: the standard Era 100 at $179, which includes a built-in microphone for voice assistant control, and the Era 100 SL at $159, which removes the microphone entirely. The sound hardware is identical between the two: same dual angled tweeters, same midwoofer, same amplification, same Trueplay tuning, same Wi-Fi and Bluetooth connectivity. The only difference is the microphone, and for anyone who doesn’t use or want a voice assistant on their speaker, the SL version delivers the same audio performance at $20 less.
The microphone-free design also appeals to anyone who prefers not to have a always-on listening device in their listening room, which is a consideration that’s become more relevant as smart speaker privacy concerns have grown. The Era 100 SL connects to Siri, Google Assistant, and Alexa through the phone rather than through the speaker itself, which keeps the functionality available without the hardware requirement.
Trueplay acoustic tuning is available on the Era 100 SL through the Sonos app on an iPhone, which uses the phone’s microphone to measure the room’s acoustic properties and adjusts the speaker’s EQ to compensate. The result is sound that’s optimized for where the speaker actually sits rather than where it would ideally sit in an acoustically perfect room, which is the difference between a speaker that sounds good in a demo and one that sounds good in your specific space.
Dual tweeters, a midwoofer, and an all-time low that’s open to everyone
The Era 100 SL’s dual angled tweeters project left and right channel audio independently rather than firing both channels from the same point, which produces genuine stereo separation from a single compact unit. The midwoofer handles bass response that most speakers this size can’t deliver without sounding thin, and Hi-Res Audio support through the line-in connection covers turntable and high-resolution source playback at full quality. Wi-Fi streaming covers every major music service, and Bluetooth pairing handles direct device connection without the Wi-Fi dependency.
The Era 100 SL integrates into any existing Sonos system as a standalone speaker or as part of a multi-room setup, playing in sync with other Sonos speakers across the house through the Sonos app. For anyone already in the Sonos ecosystem, this is the lowest the Era 100 SL has ever been priced, and for anyone starting fresh, it’s the most accessible entry point into Sonos sound that currently exists.
