ASUS ROG Xonar Phoebus Solo, 7.1 channels, Internal, 24 bit, 118 dB, PCI-E ASUS ROG Xonar Phoebus Solo. Audio output channels: 7.1 channels, Audio quality: 24 bit, Line-out Signal-to-Noise Ratio (SNR): 118 dB. Host interface: PCI-E. Dolby technologies: Dolby Home Theater v4, Chipset: C-Media CMI8888DHT. Windows operating systems supported: Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium... https://www.hardcoreware.net/asus-xonar-phoebus-solo-review/ We've harped on it many times in our motherboard reviews. If your speakers or headphones are any better than ‘decent' you are really doing yourself a disservice using the typical integrated audio setup. Most motherboard manufacturers have improved things... We've harped on it many times in our motherboard reviews . If your speakers or headphones are any better than ‘decent' you are really doing yourself a disservice using the typical integrated audio setup. Most motherboard manufacturers have improved things...