Need help with a sound quality issue

Hello this is my first post, but ive used audacity for years, so my problem is I have a Behringer Usb inter face
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And when recording on audacity it gets the job done for the most part but for some reason the quality of the recordings dont seem great even by audacity standards for example the guitar and bass, these are my own riffs recorded on audacity so tell me what you think quality wise and if theres some way to improve it, although I have a feeling it ight be getting a new interface type deal.
Also im using a crate glx 65 amp with a 1/4 inch cord coming from the line out to the behringer input, same thing with a little marshal 10 or 15 watt amp.


Guitar

distorted bass ( through the crate amp)

I can’t listen to your files right now, 'cause 'm at work.

but for some reason the quality of the recordings dont seem great even by audacity standards

Your choice of recording software doesn’t affect quality. Audaciy is just capturing the digital audio stream and routing it to your hard drive.

Also im using a crate glx 65 amp with a 1/4 inch cord coming from the line out to the behringer input, same thing with a little marshal 10 or 15 watt amp.

That could be your problem. The Behringer has a guitar input, not a line-level input. (Behringer also makes a small interface with RCA line-level inputs.)

But, a guitar can hit nearly line-level voltages (about 1V) into a high impedance, so your setup should work if you keep the line-level turned-down a bit. (If the volume control on your amp doesn’t affect line-out, you might need to turn-down the guitar volume.)

If your amp’s output is actually a headphone output, it’s “stereo” and one channel (or both channels) could be getting shorted-out when you connect to a 1/4" mono connection.

Your digital levels are OK (a bit too low, actually), but they also look very consistant like there was some clipping (distortion) or compression somewhere in the chain.

You might try normalizing… Maybe simply bringing up the levels will improve the way the sound “feels”. Run the Amplify effect, and use the default setting to bring the peaks to 0dB. But, I assume you’ll be mixing, and you’ll want to keep the levels low before mixing to prevent clipping. You should normalize your final mix after mixing, but before saving/rendering.

If you plug directly into the Behringer you should get a “clean” signal (assuming you don’t over-drive it). Then, you typically need to add an amp/cabinet simulator effect to make it sound like a “real” guitar.

If you are getting distortion directly through the Behringer (without the amps), you are either over-driving the Behringer, or it’s defective.

I don’t know if the line-output from your amps is clean, or if it’s supposed to have some “guitar amp” sound.

As an experiment once I borrowed an electric guitar and measured its pickup output signal with me hogging down on some chords. The signal level was just below HiFi Line Level. They’re very close cousins of each other.
You generally can’t plug a guitar into Mic-In. That doesn’t work. Koz