Eris E3.5 BT *

Product Details

  • 3.5-inch, woven-composite, low-frequency transducer
  • 1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer
  • Bluetooth 5.0 wireless stereo input
  • RCA and ¼-inch balanced​ TRS plus 1/8-inch stereo Aux In for use with mobile audio devices
  • 50W (25W/side) Class AB amplification 
  • Integrated headphone amplifier with front-panel stereo 1/8-inch jack

Designed by a proven leader in studio reference monitors, Eris E3.5 BT speakers deliver studio-quality sound with the convenience of Bluetooth® wireless technology. In addition to Bluetooth wireless connectivity, you get the flexibility of rear-panel, ¼-inch TRS and RCA inputs; a front-panel 1/8-inch stereo line input for use with mobile audio devices; a handy front-panel volume control; and an integrated headphone amplifier.  Experience loud, clear audio thanks to 50W of onboard Class AB power. Want more bass? Adjust the speakers’ response to taste with low- and high-frequency tuning controls. The Eris E3.5 BT speakers’ elegantly compact form is well-suited for any home environment, yet they’re compact enough to fit almost anywhere. making them a great choice for music lovers, content creators, and gamers. 

ISPD-4 *

* Factory Refurbished - This item has been 100% tested for proper operation and carries the full manufacturer's Limited Warranty.

Technical Specifications


Bluetooth 5.0
1- Stereo 1/8"
2- Balanced ¼” TRS
2- Unbalanced RCA


Frequency Response 80 Hz - 20 kHz
Crossover Frequency 2.8 kHz
Amplifier Power 25W/speaker
LF Driver 3.5"
HF Driver 1” silk dome
Peak SPL (@ 1 meter) 100 dB
Input Impedance 10 kΩ

User Controls

Volume Range A-type taper
MF Control Variable (-6 to +6 dB, center 100 Hz)
HF Control Variable (-6 to +6 dB, center 10 kHz)


RF interference
Output-current limiting
Turn-on/off transient
Subsonic filter
External mains fuse


100-120V ~50/60 Hz or 220-240V ~50/60 Hz


Vinyl-laminated, medium-density fiberboard


Width 5.6" (141 mm)
Depth 6.4" (162 mm)
Height 8.3" (210 mm)
Weight (per pair) 6.4 lb. (2.9 kg)

As a commitment to constant improvement, PreSonus Audio Electronics, Inc., reserves the right to change any specification stated herein, at any time, without notification.

CNN Underscored Best Computer Speakers of 2021 - Eris E3.5 BT

“Best sound quality: PreSonus Eris E3.5 BT.”

Christian de Looper, CNN Underscored, May 2021

All Things Gear Eris E3.5 BT and Eris Sub8 review

“The [Eris E3.5 BTs] are versatile, sound great for the price, and offer a sleek and stylish design that means they should look good in any home... the [Eris Sub8] subwoofer is definitely a worthy addition.”

Christian de Looper, All Things Gear, May 2021

DJ Tech Reviews Eris E3.5 BT review

“...leaps and bounds above others in their range... deliver quality quite unlike anything you could expect from such a compact, low-price solution…above and beyond expectations in virtually every regard.”

Dexter Jones, DJ Tech Reviews, May 2021

TechManiacHD Eris E3.5 BT review

“... idealny kompromis dla osób, które oczekują studyjnej jakości dźwięku w domowych warunkach, przy czym nie posiadają wiele miejsca.”

Michal Morawski,, April 2021

The Ultimate Holiday Videoconferencing Set-Up

“The sound will resonate with such clarity that if your friends and family close their eyes, they’ll be able to imagine you’re right there with them.”

, Matrix Video Communications, December 2020

These are the HIGHEST RATED Pair of Studio Monitors on Sweetwater: Are they any good!?

“What you hear is what you get with this monitors.”

, imamusicmogul, November 2020

Secrets of Home Theater and High Fidelity Eris E3.5 review

“".. don’t let the low price fool you, these are serious speakers with an excellent punch."”

Indiana Lang, Secrets of Home Theater and High Fidelity, August 2020 Eris E3.5 BT review

“"Was mir bei der ERIS E3.5 BT dennoch an Klangqualität entgegen schallt ist in dieser Preisklasse absolut phänomenal."”

Patric Louis,, August 2020

Music Makers Eris E3.5 BT review

“I’m extremely impressed. That was really easy to set up, really easy to pair.”

Shawn, Music Makers, July 2020

Decibel Peak

“PreSonus has created one of those rare gems that everyone should own, and they’ve made it quite accessible regardless of your financial situation.”

Stefan Chamberland, Decibel Peak, March 2020

New Toys Eris E3.5 review

“The Eris E3.5 worked great as I have them in my control room as a secondary pair of stereo monitors but they would be good as stereo monitor speakers for playing video games or for a small keyboard synth setup.”

Barry Rudolph, New Toys, April 2018

Audiofanzine Eris E3.5 review

“À l’instar des Eris E8, les 3.5 nous ont vraiment séduites.”

Red Led, Audiofanzine, January 2018


ISPD-4 *

* Factory Refurbished - This item has been 100% tested for proper operation and carries the full manufacturer's Limited Warranty.