PreSonus® Eris® E4.5 BT Studio Monitor
Designed by a proven leader in studio reference monitors, Eris E4.5 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 E4.5 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.
Features
- 4.5-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
- Includes Studio Magic, a suite of over $1000 USD worth of music production software

Designed by a proven leader in studio reference monitors, Eris E4.5 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 E4.5 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.
Features
- 4.5-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
- Includes Studio Magic, a suite of over $1000 USD worth of music production software

Highlights & specs
Versatile connectivity.
PreSonus® Eris® E4.5 BTs connect wirelessly using Bluetooth 5.0 or via a wired connection to virtually any line-level audio source, using rear-panel ¼-inch TRS and RCA inputs and a front-panel ⅛-inch stereo line input. You also get a convenient (and loud!) front-panel, ⅛-inch, stereo headphone jack; connecting headphones mutes the speakers.

World-class recording software included.
Eris® E4.5 BT media reference monitors come with a special edition of PreSonus® Studio One® Prime recording and production software, with the entire Studio Magic software suite enabled. Studio Magic includes over $1,000 USD worth of music software including plug-ins, loops, virtual instruments, effects and tutorials.

Electronics
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Voltage100-120V
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Wattage25 Watts (Each Speaker)
Hardware
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Cabinet MaterialVinyl-Laminated, Medium-Density Fiberboard
Miscellaneous
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Connection TypeIEC
Monitors
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ProtectionsRF Interference
Output-Current Limiting
Over-Temperature
Turn-On/Off Transient
Subsonic Filter
External Mains Fuse -
Audio ControlsVolume Range: A-type TaperMF Control: Variable (-6 to +6 dB, Center 100 Hz)HF Control: Variable (-6 to +6 dB, Center 10 kHz)
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Peak SPL100 dB (@ 1 meter)
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Crossover Frequency2.8 kHz
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Monitor InputsBluetooth 5.0, 1 x Stereo 1/8", 2 x Balanced 1/4” TRS, 2 x Unbalanced RCA
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HF Transducers1” Silk Dome Tweeter
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LF Transducers4.5"
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Frequency Response70 Hz - 20 kHz
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Input Impedance10 kΩ
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Monitor Amplifier Power25 Watts (Each Speaker)
Specifications
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Input Impedance10 kΩ
Support
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