Home Audio Tips

Big Sound Made Simple: The OSD Audio XSP2.1 2.1-Channel Amplifier

If you want better sound from your TV, patio, or home audio system, but don’t want the size, cost, or complexity of a full AV receiver, the OSD Audio XSP2.1 is the perfect solution. This compact yet powerful amplifier is designed to drive real speakers and a real subwoofer, delivering clear, room-filling sound for both indoor and outdoor spaces.

Whether you’re upgrading TV audio, building a patio system, or replacing a failed amplifier in an older speaker setup, the XSP2.1 makes great sound simple.

What Is 2.1 Amplification and Why It Matters?

A 2.1 amplifier powers:

  • Two main speakers (left and right) for vocals, dialogue, and detail
  • One dedicated subwoofer channel for deep, impactful bass

The XSP2.1 is designed so each speaker does what it does best. The subwoofer handles deep bass, while the main speakers focus on voices and detail. This results in fuller sound, cleaner dialogue, and a more immersive listening experience. With 100W per channel for speakers and 200W dedicated to the subwoofer, the XSP2.1 delivers real performance that you can hear and feel.


Simple Controls That Let You Dial in the Sound

The XSP2.1 is designed to be easy to use, with all key adjustments located right on the front panel. There are no apps, screens, or complicated menus just straightforward controls that let you fine-tune your system in seconds.

Speaker Sound Adjustments

Built-in bass and treble controls allow you to shape the sound of your main speakers. Add warmth and fullness, or increase clarity and detail, depending on your room, speakers, or personal preference.

Dedicated Subwoofer Tuning

The subwoofer has its own set of controls so bass blends smoothly with your speakers:

  • An adjustable crossover lets you choose where bass is handed off to the subwoofer
  • A phase control helps align the subwoofer with speaker placement
  • A sub level control allows you to balance bass output without overpowering the system

One Master Volume

A single master volume knob controls both the speakers and the subwoofer together, making everyday use simple and intuitive.

Flexible Power Options

The XSP2.1 fits easily into any system with multiple power-on choices, including manual operation, automatic signal sensing, and 12V trigger input/output for seamless integration with TVs and other audio components.


Simple 2.1 System Ideas for Indoors & Outdoors

Indoor System Examples

The XSP2.1 is an excellent choice for clean, powerful indoor sound especially where space and simplicity matter.

Living Room or TV Audio Upgrade

Ideal for: Living rooms, family rooms, apartments, or media spaces

  • Speakers: ACE850 – 8″ In-Ceiling Speaker Pair
  • Subwoofer: IWSDUAL8 – Dual 8″ In-Wall Home Theater Subwoofer

This setup is a major upgrade over TV speakers or a soundbar. The ACE850 in-ceiling speakers deliver clear dialogue and wide sound dispersion, while the IWSDUAL8 adds tight, controlled bass without taking up floor space. Powered by the XSP2.1, this system provides balanced, room-filling sound for TV, movies, and music without visual clutter.

Small Patio or Deck System

Ideal for: Patios, decks, balconies, or seating areas

  • Speakers: (2x) Forza 5.25″ Landscape Speaker
  • Subwoofer: Forza-10 – 10″ Outdoor Subwoofer

Rather than trying to cover an entire yard, this setup focuses sound where people actually listen. Two landscape speakers provide even coverage across the seating area, while the buried Forza-10 subwoofer fills in low frequencies for a natural, immersive outdoor sound experience.