PreSonus Eris 3.5BT Studio Monitors, Pair — 3.5" Inch Powered Bookshelf Speakers, Stereo, Desktop Computer, Near Field Music Production, Audio Mixing Recording
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Availability:
In Stock.
Arrives
Friday, Mar 13
Size: 3.5" BT
Style: Gen 2
Features
- HONEST. Eris 3.5BT 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 3.5BT'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. 14-inch TRS balanced inputs on the back panel for professional audio devices, unbalanced RCA inputs for consumer electronics, plus a convenient front-panel 18-inch TRS stereo aux input for your phone.
- PRECISION-TUNE TO YOUR ROOM. High- and low-frequency tuning controls allow you to customize your audio output for your ears, room size, and speaker orientation. Whether on a desk, bookshelf, or next to a turntable or record player, Eris 3.5BT's produce clear, room-filling sound.
- QUICK-SWITCH TO HEADPHONES. The easy-access front panel headphone output and built-in headphone amplifier allow for plug-and-play headphone media reference when needed.
- ADD MORE LOW END. The 50W, 8-inch companion Eris Sub 8BT studio subwoofer delivers a massive low-frequency boost and Bluetooth connectivity to your Eris 3.5BTs, creating a powerful 2.1 speaker system.
- POWER SAVER MODE. Power-saving mode auto engages after 40 minutes of idle time.
Description
Small enough to fit on any desk, yet powerful enough to fill your room with sound, PreSonus Eris 3.5BT studio monitors are the perfect way to bring studio quality sound to your home and a great choice for gaming and content creation. With Bluetooth wireless connectivity, you can stream your favorite music from any device, and with 50W of onboard Class AB power, you can enjoy loud, clear audio, without distortion. Fine-tune the speakers’ response to your exact needs with low- and high-frequency tuning controls or listen to your music in private with the integrated headphone amplifier. And with their elegant design, they’ll look great in any environment.
Brand: PreSonus
Speaker Maximum Output Power: 50 Watts
Frequency Response: 20 KHz
Connectivity Technology: 1/4" TRS, Auxiliary, Bluetooth 5.0, RCA
Audio Output Mode: Stereo
Mounting Type: Tabletop Mount
Model Name: Eris 3.5BT
Speaker Type: Multimedia
Special Feature: Featuring an integrated headphone output, flexible connection options, Bluetooth 5.0, and easily adjustable high- and low-frequency controls to fine-tune speaker response, Eris 3.5BT powered desktop speakers ensure optimal performance in any environment – from the home studio, to the dorm room, and more. Eris 3.5BTs deliver clear, accurate, studio-quality sound, with a powerful low-end punch and expressive, articulate highs, for a sound that’s big, bold, and balanced.
Recommended Uses For Product: Multimedia, Gaming, Studio-Quality Music Production
Compatible Devices: Smartphone, Tablet, MP3 Player, Desktop
Subwoofer Diameter: 3.5 Inches
Unit Count: 128.0 Ounce
Surround Sound Channel Configuration: 2.0
Included Components: 1 pair of Eris 3.5BT monitors
Product Dimensions: 5.5"D x 6"W x 8.3"H
Item Weight: 1.4 Pounds
Is Waterproof: FALSE
Warranty Type: Limited
Number of Items: 2
Control Method: Touch
Wireless Communication Technology: Bluetooth
Speaker Size: 3.5 Inches
Power Source: Corded Electric
Woofer Diameter: 3.5 Inches
Tweeter Diameter: 1 Inches
Water Resistance Level: Not Water Resistant
Customer Package Type: Standard Box
EU Spare Part Availability Duration: 2 Years
Audio Driver Type: Dynamic Driver
Bluetooth Range: 10 Meters
Subwoofer Connectivity Technology: Wireless
Includes MP3 player?: No
Number Of Circuits: 2
Number of Power Levels: 3
Series Number: 2
Supported Internet Services: Bluetooth-enabled services
UPC: 673454011818
Style: Gen 2
Indoor/Outdoor Usage: Indoor
Manufacturer: PreSonus
Shape: rectangular prism
Item Weight: 1.4 pounds
Item model number: Eris 3.5BT
Date First Available: August 15, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Mar 13
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 3.5"
Style: 1st Generation
The Eris E3.5 powered speakers are better than I thought possible! The excellent sound over the whole advertised 80-20K Hz range is beyond what I thought possible with speakers this small. They are perfect for an FM tuner, or most other audio sources. I'm also using two of the Eris E5 for a TV, and I recommend using the Fosi Audio Q4 DAC with the E5s in order to add conveniently-located tone and volume controls, because all the controls on the E5s are on the back of each speaker, making it impossible to adjust them while standing in front of the speakers, and the E5s don't have a "bass" knob, so the bass knob on the Q4 DAC allows yet another adjustment range. I keep all the E5 controls set to flat, with the Q4 DAC bass set to 2 o-clock and the treble set to 10 o-clock, and that's enough to correct for the weak-bass and strong treble coming fro the TV source. It's an excellent combination of DAC & speakers. I love it. The rest of the review below was done when I just had the pair of E3.5 speakers, using them for both TV and FM, but now I use the E3.5 pair dedicated to FM, which always has strong bass, and the two E5 and Q4 DAC dedicated to TV, which needs a bass boost. Again all the following is only about the E3.5 pair... Please note the E3.5 pair cannot fully compensate for all the weak bass output from TV/Cable/Satellite, because some of those sources only contain low-bass content. That is not the fault of these speakers, but the source content. However, if using for TV-only, and you turn the bass knob all the way up and turn the treble knob down some, most TV content is acceptable if it includes the L/R channels and the Center channel, which is how most TVs and set-top boxes output to the stereo/aux/analog/optical outputs. When the 5.1 source is only supplying the Center-channel content, as some TV shows do, the bass is often almost nonexistent. My only major complaint about these speakers is that it requires two hands to turn them on and off, because it takes so much force to flip the switch, that the weight of the speaker will not hold it in place, so you have to hold the speaker with one hand while pressing the switch. For that reason I leave them on all the time; I have measured them as using 5-7 Watts when quiet, and for me that will cost me 5W x 24 hours x 365 days = 43.8 KW-hours per year, or about $7 per year in electricity, because I have cheap electricity where I live, about $0.16 cents/KWh, but some people in other California areas could be paying 2-3 times that much, so just be aware if you leave stuff on how to calculate the cost. For me, the cost is acceptable, but ideally they would power off and on based on the input signal, like some subwoofers do. Another very minor complaint is the volume knob is not very tactile; would be better if a little bigger or stuck out a little more. But the super-excellent audio quality is the most important, so I highly recommend these speakers.
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Reviewed in the United States on December 1, 2019 by Sunglass Evaluator
Size: 3.5"
Style: 1st Generation
Sound good not sure how to compared it to, but it better the laptop speaker. Not too heavy, I put the speaker next to the laptop so I am not sure if the cable are a good length or not. It look fine. Power I don't what they mean by that. Good speakers for 100 dollars.
Reviewed in the United States on September 17, 2025 by Hugo Freyre Mercado
Size: 3.5"
Style: Gen 2
these speakers are awesome!! I love them! The amplifiers are super quiet with great dynamics. The speakers themselves are vented port bass reflex so there's plenty of bass and the controls on the back of the master unit allows great control for bass and treble. It has balanced and unbalanced inputs on the back of the master unit and has an auxiliary input on the front along with a handy headphone jack. It comes with all the cables you need and they are of good quality. It takes about five minutes to set up possibly even less. No background noise no hiss or hum. I have them spaced about 4 feet apart and there is a great sound stage. The packaging is fantastic - super professionaI and you can tell they care about how their product presents itself out of the box. I can't say enough good things about these speakers. Definitely get them even if you don't have a specific purpose for them right now. Just buy them and you'll find a purpose.
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Reviewed in the United States on September 27, 2025 by Sammy the Tailor
Size: 3.5" BT
Style: Gen 2
Amazing sounds! No technical issues, easy to install. Makes gaming and watching movies, listening to music, a wonderful experience!
Reviewed in the United States on September 7, 2025 by matthew martinez
Size: 3.5"
Style: 1st Generation
INTRODUCTION --------------------------- A little run down. My short quest for new speakers came about when the Mackie CR3’s I had for 7 years decided to stop working. In that time, I was quite happy with them. I don’t produce music, but do video editing on occasion. My primary use case is casual listening to music/movies/games. In that regard, I don’t need to have the flattest sound available or desire it – I just like clean, distinctive audio. I’ve been using Sennheiser HD555 headphones with a Sound Blaster Z soundcard for about a decade now. I know there’s better sound options out there these days, but really, these do the job well enough for me and it’s not a necessity to upgrade at the moment. Particularly, I’m impressed with the Sound Blaster software and functionality. I can switch between headphones and speakers on my computer easily and with separate settings for each that changes automatically. Which seems it’d be a convenience barrier switching to a DAC. In any case, I was previously using RCA and have switched to TRS when trying these speakers. The sound is noticeably clearer and unearths sounds more hidden with RCA. I have to crank the windows output a bit higher, but it’s unquestionably better. I also don’t turn the speaker volume up more than half or 3/4th to mitigate noise. With that, I’ll move onto my experience with these two speakers I decided to try to replace my deceased CR3’s. Upon receiving the Edifier MR4 first, I threw on some lossless tracks with some variety, albeit dated. Some artists included: Boris Brejcha, The Chemical Brothers, Erik Jackson, Emancipator, Gorillaz, Hot Chip, Linkin Park, Macklemore, MGMT, Nero, Paul Oakenfold, Papadosio, Pretty Lights, Rinôçérôse, Robert Miles, Sleater-Kinney, System Of A Down EDIFIER MR4 --------------------------- Off the bat I wasn’t stricken with the high end. I like a crispness in my highs and found there was room to be desired with snares etc. But it’s definitely good enough and doesn’t invoke fatigue. Using an equalizer in addition to increasing the treble knob helps and with dialogue in entertainment; which can be a bit muted. The speakers have decent separation and pleasing bass; while having a sound that’s brought together coherently. I have an external bass, which I won’t be inclined to turn on often, as I can also amplify it through software. Playback is warm and easy to listen to. Pressing the power button once enables or disables Music Mode. From what I could tell, it raises the decibel level slightly, as well as the bass and mids for added presence, at the expense of some clarity. I’ll probably use Monitor Mode most of the time. What I particularly liked about these speakers over the E3.5’s is a perceived wider soundstage; instruments have depth and can lightly reverberate (while still having a flatness to them), which sounded more lively comparatively. Overall, these grew on me and I’ve been pleased. If they could be a bit brighter, there wouldn’t be much else I’d desire out of them. ERIS E3.5 --------------------------- The ERIS has an adequate amount of treble and clarity in the high range that I liked at first listen. At the tradeoff of it being sharper and more fatiguing with prolonged use or higher volumes. Highs can sometimes be borderline harsh without equalizing; vocals can be sibilant. I turn the bass knob to the max at +6db and lowering or not touching the treble; which only does so much for lows anyhow. Bass is present, but it’s limited and not as full sounding – the frequency it can hit is punchy though. If you EQ more bass you can get a slight rumble, but nothing compared to the MR4. Even with a subwoofer, it’s not as full sounding. The lower mids don’t feel like they quite bridge to the bass. These speakers don’t sound bad and if I had no other options in this price range or hadn’t compared it directly to a pair with more lows, they might be acceptable. They can just be a bit flat and lifeless (which is part of the idea with monitors I guess), despite having crispness on it’s side. Honestly, I didn’t give this set as much time of day, as I kept gravitating towards the MR4’s; which didn’t make me weary with listening either. If the MR4’s weren’t around as an option, I might have compared with the Mackie CR3’s again. But doubtful: as I think their updated design is ugly, still have that green accent, and apparently they’ve declined in build quality. BUILD --------------------------- Both speakers are quite similar with an understated clean design and near identical dimensions. The MR4 seems to have a slightly better build and I prefer the the carbon fiber looking cone. The volume knob for the E3.5 is smooth – the MR4 turns with an interval of 12 clicks. The E3.5 indicator light is blue and brighter for my taste: I’d cover it up if I were to keep these speakers. The MR4 has a subdued red and green LED for monitor/music mode. Unfortunately, the green light has already started acting up and stopped working in less than a weeks use. The bass/treble knobs have more length to them on the MR4 and are easier to reach back and turn than the E3.5’s. The MR4 weighs a bit more and comes with slightly nicer speaker wire than the E3.5 The E3.5 has a detachable power cord – MR4 does not. The MR4 tweeter actually measures about three quarters of an inch, not the full 1” they claim. With both these speakers I could occasionally detect light distortion/crackling in mids and highs. Not enough to be detrimental for me in keeping the MR4’s. But also due to some solid portrayal, I could hear more of the noise added to the production of certain tracks. For example, listening to some Phantogram, where vinyl grain is frequently added. I believe the E3.5’s also displayed this characteristic, but I returned them already upon noticing more of this. CONCLUSION --------------------------- I tried both these speakers in various configurations of equalizing, but made most my judgments based on how they sound out of the box or their capabilities. The Presonus ERIS E3.5 can hit a higher frequency range; while clear, I found the Edifier MR4 sounded more pleasing and I could almost picture vocalists singing into a mic, rather than just sound coming from a speaker. This carries into the overall experience between the two. The MR4 can give me the impression of being at a concert or watching a movie at a theater, to a degree. I feel the E3.5’s are lacking a bit of soul, but maybe that’s because they’re not as warm. When switching between the two to compare, I found myself wanting to just keep listening to the Edifier’s and not switch back to the Presonus. It’s more lush with it’s prevalent bass for the size and highs can be more pronounced after equalizing (though, they still have an audible frequency ceiling, whereas the E3.5 reaches higher). Given, both these speakers haven’t had a chance for a decent break-in period; but that’ll mostly round out the sound that’s already there anyhow. I’ve also seen more feedback in regards to the Presonus not working after only a year. Most products these days can be a crap shoot, but I’d rather keep the MR4’s for the sound alone and physicality of it (with the aforementioned differences) and hope I get lucky they last awhile. But the LED being faulty already isn’t ideal and I’ll probably replace the pair. I might look further into spending a bit more for different speakers. Though, it seems moving up generally doesn’t include an aux input/headphone output, which is occasionally useful. So, once again, it comes down to weighing out price/sound/conveniences. The MR4 really does sound decent for the price ($129) and I will probably just stick to this model in the end, since I’m not ready to invest in a DAC setup either, that’ll make it worthwhile for spendier speakers. Again, I'm not a music producer, so I can't speak to the decency of these speakers for actual production – you can find reviews with graphs. I'd spend the $30 extra for the Edifiers; unless pronounced highs are super important to you (especially for rock & jazz). But if you create music with any substantial caliber of bass and need to portray it, I’d probably look elsewhere than the Presonus 3.5’s. You’d likely be wanting larger speakers anyhow; though, you may be able to get away with it by adding a sub. If you do consider the Edifier MR4’s, just know there’s a small margin of highs that aren’t as present. But they can be a more fun listening experience overall and less fatiguing.
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Reviewed in the United States on January 18, 2023 by L L