PreSonus Eris 4.5BT 2nd Gen (Pair)



4.5-Inch Media Reference Monitors With Bluetooth® Wireless Technology

Our best selling studio monitors just got better! Eris® 4.5BT media reference monitors deliver studio-quality sound in an elegant, compact form factor that makes them ideally suited for bedroom studios, video production, and high-fidelity gaming setups.

With 25 watts per side of onboard power, the Eris 4.5BT reference monitors pack a serious punch, while still delivering clear, accurate audio. The weave and nature of the Eris 4.5BT’s 4.5-inch woofer result in tight bass that you can feel, as well as cleaner overall sound. The one-inch silk-dome tweeter produces refined high-frequencies and is designed to radiate sound with a wide pattern, creating a large optimal listening area. Improved speaker voicing over previous designs delivers richer lows and a smoother crossover transition for articulate, accurate transient reproduction through the frequency range and a less-fatiguing listening experience.

A convenient front-panel knob sets the level of both the power amp and the loud, clear headphone amplifier, with its front-panel jack. With four types of inputs, including fast, reliable, stereo Bluetooth® 5.0 connectivity, it’s easy to connect just about any audio source to your Eris 4.5BT reference monitors. High- and low-frequency controls let you easily adjust your Eris speaker’s frequency response to compensate for the acoustics of your space and create the most accurate sonic reproduction possible.

Need a little more low end? Add an Eris Sub8 BT to build a perfectly matched 2.1 sound system that fits almost anywhere.

  • 4.5-inch, woven-composite, low-frequency driver
  • 1-inch, ultra-low mass, silk-dome, high-frequency driver
  • Fast, reliable stereo Bluetooth® 5.0 wireless input
  • 50W, Class AB dual amplification
  • 70 Hz to 20 kHz frequency response
  • 100 dB SPL (Peak, @ 1 meter)
  • High- and low-frequency Acoustic Tuning controls
  • Balanced, ¼-inch TRS inputs; unbalanced, ⅛-inch stereo and RCA inputs; and integrated stereo headphone amplifier with front-panel ⅛-inch output
  • Protection: RF interference, output-current limiting, over-temperature, turn-on/off transient, subsonic filter
  • Power Saver mode (engages after 40 minutes)
  • Comes with speaker wire, ⅛-inch TRS to stereo RCA cable, and stereo ⅛-inch TRS to ⅛-inch TRS cable



  • Voltage – 220-240V EU
  • Wattage – 25 Watts (Each Speaker)
  • Cabinet Material – Vinyl-Laminated, Medium-Density Fiberboard
  • Connection Type – IEC
  • Protections – RF interference
    Output-current limiting
    Turn-on/off transient
    Subsonic filter
  • Audio Controls – VolumeHigh Frequency (±6 dB, center 10 kHz, continuously variable)Low Frequency (±6 dB, center 100 Hz, continuously variable)
  • Peak SPL – 100 dB (@ 1 meter)
  • Crossover Frequency – 2.8 kHz
  • Monitor Inputs – Bluetooth 5.0, 1 x Stereo 1/8″, 2 x Balanced 1/4” TRS, 2 x Unbalanced RCA
  • HF Transducers – 1” Ultra Low Mass, Silk Dome Tweeter
  • LF Transducers – 4.5″ Woven Composite
  • Frequency Response – 70 Hz – 20 kHz
  • Input Impedance – 10 kΩ
  • Monitor Amplifier Power – 25 Watts (Each Speaker)
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