i-Sound Recorder for Windows 7/10 is an application that enables users to record sound from speakers, digital audio, microphone or line in, and save it to file. It sports resourceful options that cater to advanced users.

The interface is based on a familiar interface that resembles the one of a common media player. A large recording button can be seamlessly spotted, and you can quickly save audio to file by specifying the output directory and file name. The tracks are saved to MP3 format.

It is possible to edit tags and use a multimedia player, as well as to schedule multiple recording sessions and customize settings when it comes to the event name, start and stop time, file name pattern, recurrence mode, and days of the week. Plus, you can trigger command-line parameters or programs for execution.

As far as program settings are concerned, you can enable an auto naming system, point out the default saving directory, set the frame to stay on top of other windows, and edit mixer properties (playback and recording device, recording source).

Furthermore, you can configure audio parameters for each audio codec, such as sample rate, encoding mode, and bit rate. Plus, you can set filters (e.g. lowpass, notch), activate an automatic splitter and stopper for recordings, and so on.

The application uses a surprisingly low amount of CPU and RAM, so it is not a concern to the computer's overall performance. It has a good response time and delivers quality audio. No error messages were shown in our testing, and the utility did not hang or crash.

In conclusion, i-Sound Recorder for Windows 7/10 comes equipped with a bunch of useful options dedicated to recording audio from various sources and saving it to file. Unfortunately, it is not particularly intuitive for first-time users.