PreSonus
PreSonus Eris 4.5BT White 4.5-inch Media Reference Monitors with Bluetooth Wireless Technology
Bottom line: The PreSonus Eris 4.5BT White 4.5-inch Media Reference Monitors ($188.99 on Amazon as of 2026-10-06): 50W Class AB amp (25W/side) for room-filling volume; main trade-off: 4.5-inch woofers limit deep sub-bass without the Sub 8BT.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 50W Class AB amp (25W/side) for room-filling volume
- ✓ Woven-composite woofers deliver tight, feel-it bass
- ✓ Bluetooth 5.0 plus TRS, RCA, and aux wired inputs
- ✓ 1-inch silk-dome tweeters give wide stereo sweet spot
Cons
- ✗ 4.5-inch woofers limit deep sub-bass without the Sub 8BT
- ✗ Class AB runs warmer than Class D rivals
- ✗ Compact size best for near-field, not large rooms
- ✗ Power-saver cuts off after 40 min idle
Manufacturer description
PreSonus Eris-series studio monitors are used worldwide by audio engineers and producers who need to hear every detail of their recordings. Eris 4.5BT media reference monitors deliver studio-quality sound in an elegant, compact form factor that makes them ideally suited for bedroom studios, video production, and high-fidelity gaming setups. With 25 watts per side of onboard power, the Eris 4.5BT reference monitors pack a serious low-end punch, while still delivering clear, accurate audio. Improved speaker voicing over previous designs delivers richer lows and a smoother crossover transition…
SpecPicks Verdict
SpecPicks scored PreSonus Eris 4.5BT White 4.5-inch Media Reference Monitors using a rating × review-volume × price-fit model applied to published specs and reviews across the audio & midi category. PreSonus's audio & midi lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for audio & midi of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- HONEST. Eris 4.5BT near field studio monitors deliver studio-quality, accurate sound perfect for music production, hi-fi audio listening, or multimedia reference.
- EXPRESSIVE. Clear, accurate audio with a big low end — Eris 4.5BT's woven-composite woofers’ weave and nature result in tight bass that you can feel, as well as cleaner overall sound.
- POWERFUL. Compact speakers that pack a punch — 50 Watts of Class AB dual amplification (25W per side) provide all the volume and loudness you want without sacrificing tonal balance or audio clarity.
- BLUETOOTH 5.0 WIRELESS CONNECTIVITY. Ultra-reliable Bluetooth 5.0 delivers seamless integration with your other devices while flexible wired connection options ensure easy compatibility with virtually any monitoring setup – so you can plug in, pair up, and get to work without missing a beat.
- ULTRA-WIDE LISTENING SWEET SPOT. The natural high-frequency response of the 1-inch low-mass, silk-dome transducers (tweeters) provide superior stereo imaging from nearly any listening angle.
- ALL THE CONNECTIONS YOU NEED. ¼-inch TRS balanced inputs on the back panel for professional audio devices, unbalanced RCA inputs for consumer electronics, plus a convenient front-panel ⅛-inch TRS stereo aux input for your phone.
Full Specifications
| Brand | PreSonus |
|---|---|
| Color | White |
| Model Name | ERIS 4.5BT WHITE |
| Connectivity | Bluetooth |
| Model Number | 2777500137 |
| Power Source | Corded Electric |
| Speaker Size | 4.5 Inches |
| Speaker Type | Monitor |
| Compatibility | Switch |
| Is Waterproof | False |
| Mounting Type | Shelf Mount |
| Warranty Type | Manufacturer |
| Built-In Media | 1 pair of Eris 4.5 BT White monitors |
| Connection Type | Wired |
| Number of Items | 2 |
| Woofer Diameter | 4.5 Inches |
| Antenna Location | For Music Production, For Computers, For Televisions, For Gaming Consoles, For Smartphones or Tablets |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Compatible Devices | Smartphone, Tablet, MP3 Player, Desktop, Television, Projector, Laptop |
Ready to buy?
PreSonus Eris 4.5BT White 4.5-inch Media Reference Monitors with Bluetooth Wireless Technology is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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