Other surround plug-ins may claim to provide Dolby® Pro Logic® II capable decoding, but only ATSurround can deliver true high-quality matrix decoding with excellent channel leak rejection and headphone virtualization within its class. We encourage you to listen for yourself and hear the difference. It's more than just an upmixer.

Features and Benefits

• Enjoy true 5.1 surround for your music played with Winamp and foobar2000 audio players
• Headphone mode allows listening of audio in virtual-surround and reduces ear fatigue
• Encodes surround to stereo, which may be decoded by ATSurround and other commercially-available surround decoders
• Compatible with Dolby and similar processors
• Makes full use of your 5.1 speaker systems

Specifications

• Processing modes:
  • Bypass
  • Passive
  • ATSurround-AS
  • ATSurround Headphone
  • ATSurround Encoding
• Master gain control (±6dB)
• ATSurround decode settings:
  • Music/Movie mode
  • Surround delay
  • Centre weight
  • Surround channels low-pass shelf filter
• Individual channel delay (0 - 100ms)
• Individual channel trim (±12dB)
• Bass redirection settings:
  • Cut-off frequency (20 - 200Hz)
  • Phase invert
• Internal 32-bit processing (16/24-bit output on supported hardware)
• SSE2 acceleration (on CPUs supporting this feature)
• NVIDIA® CUDA acceleration (on NVIDIA GeForce® 8-series and above GPUs)

Requirements

• Nullsoft® Winamp® 5 or foobar2000 1.0
• Multi-channel capable speakers and soundcard (a 5.1 system is recommended, 4-point system minimum)
• Headphones for experiencing ATSurround Headphone mode
  
• Microsoft® Windows XP, Windows Vista® or Windows 7 (runs on x86 and x64 versions of these operating systems)