General Information
Xonar U7 serves the needs of PC gamers who want to enjoy strong and clear sound via headphones, and is also ideal for listening to music as it produces much more impactful and detailed audio than onboard hardware. Connecting via USB, it requires no standalone power supply and works instantly setup-free with no need to open the PC case.
Features:
- True 7.1-channel, 192kHz/24-bit high definition sound from a compact USB-powered device
- Dedicated mic volume control for instant adjustments right in the heat of gaming action
- Integrated headphone amplifier pumps up every sound detail
- 114dB signal-to-analog ratio (SNR) ensures pure sound
- Dolby® Home Theater v4 delivers lively surround
Specifications:
- Output Signal-to-Noise Ratio (A-Weighted): 114dB
- Input Signal-to-Noise Ratio (A-Weighted): 110dB
- Output Total Harmonic Distortion + Noise at 1kHz (A-Weighted): Up to 0.0006% (104dB)
- Input Total Harmonic Distortion + Noise at 1kHz (A-Weighted): Up to 0.001% (-100dB)
- Frequency Response (-3dB, 24-bit/96kHz input ): <10Hz to 46kHz
- Output/Input Full-Scale Voltage: Rear output (Surround) 1Vrms (2.828 Vp-p); Headphone out: 1.3Vrms (3.677 Vp-p); Line in 1Vrms (3.677Vp-p)
- Bus Compatibility: USB audio class 2.0 for all function / Driver-less USB audio class 1.0 for playback
- D-A Converter of Digital Sources: Cirrus Logic CS4398* 1 (120dB SNR, Max. 192kHz/24bit);Cirrus Logic CS4362*1 (114dB SNR, Max. 192kHz/24bit)
- A-D Converter for Analog Inputs: Cirrus Logic CS5361* 1 (114dB SNR, Max. 192kHz/24bit)
- Analog Playback Sample Rate and Resolution: 44.1K/48K/88.2K/96K/172.4K/192KHz @ 16/24bit
- Analog Recording Sample Rate and Resolution: 44.1K/48K/88.2K/96KHz/172.4K/192K @ 16/24bit
- S/PDIF Digital Output: 44.1K/48K/88.2K/96K/172.4K/192KHz @ 16/24bit
- ASIO 2.0 Driver Support: 44.1K/48K/88.2K/96K/172.4K/192KHz @ 16/24bit
Connectivity:
Front panel:
- Headphones out x 1
- Mic in/Line in x 1
Back panel
- Stereo RCA *2 (Front left/ Front right)
- 3.5mm(1/8") jack *3 for surround (Side/Center-Subwoofer/Rear)
- S/PDIF Coaxial *1
Features:
- True 7.1-channel, 192kHz/24-bit high definition sound from a compact USB-powered device
- Dedicated mic volume control for instant adjustments right in the heat of gaming action
- Integrated headphone amplifier pumps up every sound detail
- 114dB signal-to-analog ratio (SNR) ensures pure sound
- Dolby® Home Theater v4 delivers lively surround
Specifications:
- Output Signal-to-Noise Ratio (A-Weighted): 114dB
- Input Signal-to-Noise Ratio (A-Weighted): 110dB
- Output Total Harmonic Distortion + Noise at 1kHz (A-Weighted): Up to 0.0006% (104dB)
- Input Total Harmonic Distortion + Noise at 1kHz (A-Weighted): Up to 0.001% (-100dB)
- Frequency Response (-3dB, 24-bit/96kHz input ): <10Hz to 46kHz
- Output/Input Full-Scale Voltage: Rear output (Surround) 1Vrms (2.828 Vp-p); Headphone out: 1.3Vrms (3.677 Vp-p); Line in 1Vrms (3.677Vp-p)
- Bus Compatibility: USB audio class 2.0 for all function / Driver-less USB audio class 1.0 for playback
- D-A Converter of Digital Sources: Cirrus Logic CS4398* 1 (120dB SNR, Max. 192kHz/24bit);Cirrus Logic CS4362*1 (114dB SNR, Max. 192kHz/24bit)
- A-D Converter for Analog Inputs: Cirrus Logic CS5361* 1 (114dB SNR, Max. 192kHz/24bit)
- Analog Playback Sample Rate and Resolution: 44.1K/48K/88.2K/96K/172.4K/192KHz @ 16/24bit
- Analog Recording Sample Rate and Resolution: 44.1K/48K/88.2K/96KHz/172.4K/192K @ 16/24bit
- S/PDIF Digital Output: 44.1K/48K/88.2K/96K/172.4K/192KHz @ 16/24bit
- ASIO 2.0 Driver Support: 44.1K/48K/88.2K/96K/172.4K/192KHz @ 16/24bit
Connectivity:
Front panel:
- Headphones out x 1
- Mic in/Line in x 1
Back panel
- Stereo RCA *2 (Front left/ Front right)
- 3.5mm(1/8") jack *3 for surround (Side/Center-Subwoofer/Rear)
- S/PDIF Coaxial *1
You have to right-click the headphone output icon, which opens an output impedance pop-up menu (low / medium / high). By default, it is set to low.
I agree that the built-in amp is not very powerful, but I really feel that it should be able to drive headsets like the PC37X.