Amphion BaseOne25 System

$6,500.00
Direct Ship, Non-Stock But Normally Ships Quickly

Stock Item: Ships from our shelf quickly in almost all cases when ordered before our ship cutoff times.

Direct Ship: Non-stock item, but normally ships quickly from the manufacturer or alternate warehouse.

Built To Order: Item is custom built per the options chosen and quickly shipped out upon completion.

More On The Way: The manufacturer is experiencing delays, but we'll ship quickly upon arrival.

New Item: We have this on order, the manufacturer hasn't shipped but you'll be in line upon arrival.

Visit our Shipping Page for cutoff times for FREE (USA), UPS, USPS or FedEx.

Visit our Returns Page for info on non-returnable, special order non-stock items.


Add incredible bass response to your Amphion nearfield speakers, all built into these incredible stands!

All-in-one solution

The Amphion BaseOne25 bass extension system offers a complete solution to seamlessly transform studio monitors to a true stereo full-range monitoring system. BaseOne25 extends all the way down to 20Hz while simultaneously improving dynamic range and minimizing distortion by handling most of the heavy lifting at the low end of the spectrum.

Driven by Amphion’s meticulously developed BaseAmp500 crossover/amplifier module, the BaseOne25 LF extension towers sit directly under existing studio monitors. This makes physical integration  and phase/time alignment much easier to achieve. Full range / monitor only -views into your music are available at the touch of a button (or a foot switch).

The result is a breathtaking 3D soundscape so accurate that you’ll swear the musicians are playing right in front of you… …even with your eyes open.

Package Includes

  • (1) BaseAmp500 Stereo Amplifier with Crossover
  • (2) BaseOne25 Towers
  • (2) Amphion Speakon Speaker Cable

BaseAmp500 Features

  • Bypass switch and indicator (true hard bypass, also when powered off)
  • Power switch and indicator
  • Bass level setting (below 100Hz) for matching the system to the sensitivity of your main speakers
  • Stereo Inputs
  • Stereo Outputs for main (monitor) amplifier
  • Speaker outputs for BaseOne25 low frequency speakers
  • Bypass latching input footswitch (standard 1/4” jack)
  • Mains input (auto voltage switching)
  • Dimensions: 19"W x 3.5"H (2 rack units high)
  • Weight: 11 lbs

BaseOne25 Base Unit Features

  • Frequency Response: 20 to 100Hz +/-3dB
  • Crossover Frequency: 100Hz
  • 10" Aluminum Long Throw Woofer
  • 10" Aluminum Passive Radiator
  • Neutrik Speakon Connector
  • 35mm Birch Plywood Cabinet
  • Dimensions: 37.6"H x 15.2"W x 7.5"D
  • Weight: 91 lbs
Our ONE WITH EVERYTHING ZEN WARRANTY extends the standard manufacturer warranty by one year, see our ZEN WARRANTY page for details.

Recently Viewed Items