Presonus Eris E4.5 BT monitor speakers


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Eris E4.5 BT monitor speakers

Eris E4.5 BT: Active Media Reference Monitors with Bluetooth

Sound you can trust.

PreSonus® Eris-series studio monitors are used worldwide by audio engineers who need to hear every detail of their recordings. Ideal for gaming and home video production, the Eris E4.5 BT employs the same technology as the larger Eris models to deliver studio-quality sound, with a smooth and accurate frequency response. Yet they’re compact enough to fit almost anywhere.

Clean overall sound, smooth high end, and a wide sweet spot

Every Eris-series studio monitor utilizes a woven composite low-frequency driver. The weave and nature of the Eris E3.5 BT’s 3.5-inch woofer result in tight bass that you can feel, as well as cleaner overall sound. The one-inch silk-dome tweeter produces a smooth and refined sound, accurately reproducing transients and high frequencies. The tweeter is designed to radiate sound with a fairly wide pattern, creating a large optimal listening area or “sweet spot” so you can move around and still hear an accurate stereo image. With 25 watts per side of onboard power, the Eris BT-series monitor speakers pack a serious punch, while still delivering clear, accurate audio.

Easy-to-use controls.

A speaker’s response is affected by where you place it and the acoustics of your space. That’s why Eris E4.5 BT active media reference monitors offer controls to adjust the high- and low-frequency content, so your Bluetooth speakers always sound their best. A convenient front-panel volume knob sets both the speaker level and the integrated headphone amplifier’s level.

Convenient wireless Bluetooth connectivity.

With four different types of audio inputs, it’s easy to feed audio to your Eris E4.5 BT monitors from almost any source. Fast, reliable, stereo Bluetooth 5.0 connectivity lets you go wireless, streaming sound from a smartphone, tablet, laptop, or other Bluetooth source. Play games, listen to music, and even create content, with no wires except power cables. When you want a wired connection—say, from a computer, turntable, TV, or other line-level source—the Eris E4.5 BT has you covered with rear-panel, left and right ¼-inch TRS and RCA inputs and front-panel 1/8” stereo inputs. A loud, clear, front-panel headphone amplifier lets you work and play in stealth mode, without disturbing your housemates.

Accuracy defined.

Like all PreSonus speakers, the Eris E4.5 BT offers consistent, accurate listening, with the smooth and even frequency response that has made Eris studio and media reference monitors popular around the world. Their compact and powerful design makes them an ideal solution for any small space. Want extra-deep low end? Pair compact Eris E3.5 BTs with PreSonus’ powerful Temblor® T8 active subwoofer for a truly full-range sound system that fits almost anywhere.


Components and construction

  • 4.5-inch (114 mm) woven composite low-frequency transducer

  • 1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer

  • Rear-firing acoustic port for superior bass-frequency reproduction

  • Optimized, resonance-suppressing internal bracing

User controls

  • High- and low-frequency tuning controls

  • Front-panel Volume control for speakers and headphone amplifier

  • Bluetooth pairing button

Power and safety

  • 50 watt (25W/side), Class AB bi-amplification

  • RF interference, output current limiting, over-temperature, transient, and subsonic protection

  • Amplifier “soft start” feature eliminates popping on power-up

  • Internal power supply with IEC connector

  • Power switch with on/off LED

Inputs and outputs

  • Stereo Bluetooth 5.0 wireless input

  • Balanced ¼-inch TRS, unbalanced 1/8-inch stereo, and RCA inputs

  • Integrated stereo headphone amplifier with front-panel 1/8-inch output

Technical Specifications



Bluetooth 5.0


1- Stereo 1/8"


2- Balanced ¼” TRS


2- Unbalanced RCA



Frequency Response

70 Hz - 20 kHz

Crossover Frequency

2.8 kHz

Amplifier Power


LF Driver


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




5.6" (141 mm)


6.4" (162 mm)


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.

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Customer Reviews
5.0 Based on 2 Reviews
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Filter Reviews:
Sakke P.
Ireland Ireland
I recommend this product

Good product, good website, good service

Really easy to get there on Luas. The speakers are really good, especially for their price.

14/09/2021 DJ Shop

Hi and thanks for taking the time to leave us a rating and review it is much appreciated. Enjoy your kit.

Ian M.
Ireland Ireland
I recommend this product


First looked online and found the shop was nearby. Arrived and staff member was very helpful, honest and asked me what I was looking for before adding some advice to fine tune what I needed. Provided a few options and the prices I was already aware of from the website so had no issues there. Would recommend these guys. Experienced and knowledgeable. Member of staff also respected social distance measures. Will return for my next purchase. 100% DJ Shop Presonus Eris E4.5 BT monitor speakers Review
29/06/2021 DJ Shop

Hi Ian - thank you for taking the time to leave us a review. I was delighted to read you had such a positive experience with us. We appreciate the business and the support, and we look forward to seeing you in Djbox or online soon. Stay safe and well.