The Positive Grid RIFF USB Audio Guitar Interface is a portable device that works well with various software, including Bias FX2 on iPad and Logic Pro. Users appreciate its presets, display readouts, and ease of use. The sound quality is generally praised, with many users able to achieve the sound they want. However, some users have reported issues with the software, particularly with downloading and installing it, as well as concerns about the sound quality, particularly on certain devices. Some users have also noted a lack of customer support.

Pros:

1. Portable and easy to use
2. Presets and display readouts make it easy to achieve desired tones
3. Compatible with various software, including Bias FX2 and Logic Pro
4. Generally good sound quality

Cons:

1. Some users have reported issues with the software, including difficulty downloading and installing it
2. Concerns about sound quality on certain devices, with some users reporting a “fake” or “unnatural” sound
3. Lack of customer support
4. Some users have reported latency issues

Overall, the Positive Grid RIFF USB Audio Guitar Interface is a portable and easy-to-use device that offers a range of presets and display readouts to help users achieve their desired sound. While many users have reported positive experiences with the device, some have noted issues with the software and sound quality. Additionally, the lack of customer support may be a concern for some users. Potential buyers should carefully consider these pros and cons before making a purchase.