Presonus Eris E3.5 BT


Active Studio Monitors with Bluetooth Connectivity

  • 3.5" Woofer with Kevlar diaphragm
  • 1" Tweeter with silk diaphragm
  • Frequency response: 80-20,000 Hz
  • Sound pressure level (SPL): 100 dBA (peak)
  • Inputs: TRS (L/R, balanced), RCA pair (L/R), 3.5 mm stereo jack
  • Bluetooth 5.0
  • Headphone jack on the front panel (stereo mini jack)
  • Volume control on the front panel with on/off switch and LED
  • Class AB power amp with 2x 25 W
  • Switch-on delay and output current limiter
  • Protection against overheating and subsonic filter
  • Dimensions: (H x W x D) 210 x 141 x 162 mm
  • Weight: 2.9 kg
  • Includes a 1.5 m mini-jack cable (TRS to TRS), 1.5 m adapter cable (mini jack TRS to 2x RCA), and a cable for connecting the left to the right speaker
Speaker size 1x 3,5", 1x 1"
Amplifier power per unit (RMS) 25 W
Magnetic Shielding No
Analogue XLR Input No
Analogue Input (Jack) Yes
Analogue Input (Mini Jack) Yes
Analogue Input (RCA) Yes
Digital input Yes
Manual frequency correction Yes
available since November 2019
Item number 477534
sales unit 1 pair(s)
Frequency range min. 80 Hz
Frequency range max. 20000 Hz
Dimensions 141 x 210 x 162 mm
Weight 2,9 kg
Speaker Hous8ing - Woofer System Bassreflex
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119 €
All prices incl. VAT
In stock
In stock

This item is in stock and can be dispatched immediately.

Standard Delivery Times
Free shipping. Delivery by approx. Monday, 24.01.
Good little desktop speakers
røde2nowhere 04.07.2020
Bought these to replace a set of Mackie CR4 speakers, which had been giving trouble from early on. These are slightly smaller, and a lot lighter, but the sound isn't far off. The woofers are 3.5" compared to 4" on the Mackie set, and there is a noticeable difference in the low end, but overall these seem nicely balanced for general use, music, voice, etc.

These are being used as near field speakers on a home desktop for some voice audio and music editing, as well as for music and video playback.

- Nice clear highs
- Can get very loud for such small speakers
- Easy bluetooth connectivity
- Headphone, aux, volume and on/off switch all on front for easy access
- Simple/Professional looking
- removable (standard) two pin power connection
- separate adjustable acoustic tuning for lows and highs
- balanced inputs (not present on some other small speakers in this price range)

(nothing really, but compared to Mackie CR4)
- no way to set right/left for main powered speaker, which is the left speaker, so not ideal for every setup
- Bass is lacking a little, and I'm starting to think of pairing them with a subwoofer already, something I didn't consider with the CR4s.
- Very small bump on the speaker knob is the only visual indication of its position

Overall, these little speakers will blow away any comparably priced consumer focused desktop multimedia speakers when it comes to sound quality and flexibility of inputs. I believe they are useable in a home studio for editing, especially voice work. No regrets in getting these, so far.


Affordable but cool bluetooth option.
DonSchlup 06.12.2021
After owning the non-bluetooth version of these monitors in my home studio, decided to get a slightly upgraded pair for my home entertainment system. They have the exact same response of the Eris 3.5, and look exactly the same (which is a great look, come on) but the added bluetooth option is quite fun, and works well. The big difference between these and some other speaker options like the Marshall's and such, is really the sound quality above aesthetic. Highly recommend it for a quality product at an entry-level price point.


Might just be best in class.
KTRreview 06.12.2021
Considering the compact size of these, they deliver an incredibly full sound. Obviously you don't get the deep bass but that's to be expected.
The important part is that the sound is true and clear and the bluetooth functionality works seemlessly.
Easy 5/5 since it does everything it promises with zero issues


Good sound but one annoying feature
E Mats 23.02.2021
I love these, I have absolutely no complaints about the sound but after about a month of owning them, I realised something annoying about the bluetooth feature. Essentially if you have connected more than 1 device to it (e.g. laptop as well as mobile phone), it will constantly search for the other device and make an annoying beeping sound (even when you disconnect it / unpair it). It doesn't annoy me enough to return them but it does get on my nerves... other than that the speakers are great.