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PreSonus Eris Sub 8BT 8-inch Powered Bluetooth Studio Subwoofer — main product image
PreSonus

PreSonus Eris Sub 8BT 8-inch Powered Bluetooth Studio Subwoofer

Add tight, accurate low-end punch to your studio monitors with this compact 8-inch powered subwoofer featuring Bluetooth.

$209.99*
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*Price sourced from Amazon.com. Last updated:Jun 26, 2026.Price and availability are subject to change.

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Overview

The PreSonus Eris Sub 8BT is a compact powered studio subwoofer built to extend the low-frequency response of desktop and nearfield monitoring systems. Its 8-inch front-firing woofer is driven by a built-in 100-watt amplifier, delivering tight and controlled bass that fills in the frequencies most small studio monitors cannot reproduce on their own. For home studios, podcast editing setups, and small mixing rooms, it provides the low-end foundation needed to make more confident decisions about bass content in your mixes.

Connectivity is a standout feature of the Sub 8BT, with RCA and 1/4-inch TRS inputs for wired integration alongside Bluetooth for wireless audio streaming. This dual-purpose design means the subwoofer can serve as part of a serious monitoring chain during production and double as a bass-enhanced speaker system for casual listening or reference playback. Its compact size allows it to tuck neatly under a desk or beside a pair of Eris monitors, making it a space-efficient addition to any small studio environment.

Key Features

Demo Compact 8-inch Active Studio Subwoofer with Blueto

Specifications

Brand
PreSonus
Model
Eris Sub 8BT
Type
Powered Studio Subwoofer
Woofer Size
8 inches
Power Output
100 Watts
Wired Inputs
RCA, 1/4-inch TRS
Wireless
Bluetooth
Condition
Demo Unit

Pros & Cons

👍 Pros

  • Compact 8-inch form factor fits easily under a desk or beside studio monitors without dominating the space
  • Built-in 100-watt amplifier means no external amp is needed
  • Bluetooth connectivity adds wireless playback versatility for casual listening and reference checks
  • Multiple wired inputs (RCA and 1/4-inch TRS) provide flexible integration with studio gear
  • Designed to complement the PreSonus Eris monitor line for cohesive low-end extension

👎 Cons

  • 100 watts and an 8-inch driver may not produce enough output for larger rooms or louder monitoring levels
  • Bluetooth audio introduces latency that makes it unsuitable for real-time tracking or critical mixing
  • Limited product information available makes it difficult to evaluate advanced tuning controls before purchase
  • As a demo unit, cosmetic imperfections or missing original packaging may be present

Frequently Asked Questions

The subwoofer offers RCA, 1/4-inch TRS, and Bluetooth connectivity, allowing it to integrate with a wide range of studio monitors, audio interfaces, and wireless devices.
The subwoofer has a built-in 100-watt amplifier driving its 8-inch woofer, providing adequate low-end reinforcement for small to medium studio and listening environments.
Bluetooth is available for casual listening and reference playback, but for critical studio monitoring with minimal latency, the wired RCA or 1/4-inch TRS connections are recommended.
As a powered studio subwoofer in the PreSonus Eris line, it is designed to integrate with Eris studio monitors and includes controls for adjusting its output to match your setup.
With its 8-inch driver and 100-watt amplifier, the Sub 8BT is best suited for small to medium rooms such as home studios, editing suites, and desktop listening setups.

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