PreSonus Eris E4.5 2-Way active studio monitors

70㎐ - 20㎑ Frequency Response - 100㏈ Peak SPL - 10 kΩ

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What's in the box:

  • PreSonus Eris E4.5
  • 1.5M ⅛” TRS to 2X RCA cable
  • 1.5M ⅛” TRS stereo cable
  • 2M bare-wire speaker cable
  • (4) Foam feet (To be placed on the bottom of each speaker)
  • IEC Power Cable
  • 1-year Limited Warranty


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Designed by a proven leader in recording technology

PreSonus's Eris E4.5 (PRE-E4.5) 2-Way active studio monitors are used worldwide by studio engineers and performers who need to hear every detail of their amplified sound. The Eris E4.5 delivers studio-quality sound, yet is compact enough to fit almost anywhere. You get the flexibility of rear-panel, ¼″ TRS and RCA inputs; front-panel ⅛″ stereo, unbalanced line inputs for use with mobile audio devices; a convenient front-panel volume control; and an integrated headphone amplifier. Fine-adjust the speaker's response with low- and high-frequency tuning controls. It may be small but the E4.5 is loud, as well as clear, thanks to a 25W/side Class AB power amp.


  • 4.5″ Woven composite low-frequency transducer
  • 1″ (25㎜), Ultra-low-mass, silk-dome, high-frequency transducer
  • RCA and ¼″ balanced TRS rear-panel inputs
  • Front-panel ⅛″ stereo AUX in for use with mobile audio devices
  • Integrated headphone amplifier with front-panel stereo ⅛″ jack
  • High- and low-frequency controls let you fine-tune the speaker's response
  • Front-panel Volume control
  • Rear-firing, round bass-reflex port
  • 25W/side Class AB amplification

Steeped in the life of working as musicians, technicians, and sound engineering, the good people of Presonus live and work in Baton Rouge, Louisiana, USA. PreSonus exists to create, sell, and support fine audio products, and they want to make their city and the world a better place, too. Friendly, helpful tech-support folks provide prompt, efficient service.

Specifications for the PreSonus Eris E4.5

{ "Inputs": { "null": "2- Unbalanced RCA" }, "Performance": { "Frequency Response": "70 Hz - 20 kHz", "Crossover Frequency": "2.8 kHz", "LF Amplifier Power": "25W/speaker ", "HF Amplifier Power": "(not biamped)", "Peak SPL (@ 1 meter)": "100 dB", "LF Driver": "4.5\"", "HF Driver": "1” silk dome", "Input Impedance": "10 kΩ" }, "User Controls": { "Volume Range": "A-type taper", "MF Control": "Variable (-6 to +6 dB)", "HF Control": "Variable (-6 to +6 dB)", "Low Cut": "Flat, 80 Hz, 100 Hz", "Acoustic Space": "Flat, -2 dB, -4 dB" }, "Protection": { "null": "External mains fuse" }, "Power": { "null": "100-120V ~50/60 Hz or 220-240V ~50/60 Hz" }, "Cabinet": { "null": "Vinyl-laminated, medium-density fiberboard" }, "Physical": { "Width": "6.42″ (163 mm)", "Depth": "7.09″ (180 mm)", "Height": "9.45″ (241 mm)", "Weight": "13 lb. (5.9 kg)" } }

Research Materials for PreSonus Eris E4.5 (PRE-E4.5)

We've added technical materials to help with your buying decision. Even if you're technically inclined, you may want to consider talking to our sales techs to make sure this item is the right fit for your particular use. 800.562.6006

Eris E4.5 (PRE-E4.5) Brochure

Eris E4.5 (PRE-E4.5) User Guide

Eris E4.5 (PRE-E4.5) Drawing

Eris E4.5 (PRE-E4.5) Quick Start Guide

PreSonus Warranty Information

PreSonus Brief Tutorial on Studio Monitors

PreSonus-Eris Studio Monitors

John Bastianelli on the PreSonus Studio Monitor Line

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