Feature: -WAV files with variable speed playback capabilities perfect for AIFF audio files for easy learning and practice.  -Usb directly into the computer, easy to connect.  -Asio channel allows you to use the effect directly (you can also use guitarrig a class of software).  -Let the computer into your guitar effect, a variety of powerful effects can be downloaded free of charge to the Internet.  -Provide high resistance input (general professional sound card input can not directly access the guitar).  -Comes with headphone output, direct monitor.  -You can use guitarrig, or use nuendo to record.  -Turn your computer into a guitar amp and recording device without any other hardware.  -Support OS: Windows system.    Instructions: 1, install this sound card into the computer USB, the computer detects the hardware.  2, into the sound card comes with the CD, find the driver and install.  3, the system prompts to restart. Restart the device manager to open, see if there is no installation, there will be more than a USB Audio Device.  4, after the installation is complete, in the computer taskbar click on the small speaker icon, right click to adjust the audio properties.  5, point audio this, in the playback and recording, select USB Audio and enable.  6, the guitar output line into the sound card has a guitar logo hole, another hole connected speakers or headphones.  7, open the already installed recording software, start recording.  8, stereo headphone output, so that you can play with the computer, the output can also be used for monitoring use.  9, USB interface power supply - no external power supply.    Specifications: Product name:Guitar USB connector line;  Color:Black;  Size:Approx. 9.5x5x2cm/3.74"x1.96"x0.78";  Wire material:Copper;  Interface type:USB;  Applicable equipment:Guitar;  Audio quality:16 bit, 44.1 / 48 kHz MP3;  Weight:About 90g;    Package Include: 1x Guitar USB connector cable;  1x 6.5mm revolution 3.5mm female adapter;  1x CD (32bit,not compatible with WIN10 system temporarily);  1x User Manual