Question 1: “How can I convert 1000+ music files from 128kbps to 320kbps without using iTunes? ”

Question 2: “What happens when I have a song (128 kbps) and convert it to a higher bitrate (320 kbps)? Will the song’s sound quality improve, become worse or remain the same?”

As well known to all, MP3 has been the most popular audio file format around the world. As a compressed audio file container format, MP3 is compatible with almost all operating systems, media players and portable devices. However, more and more people start giving MP3 up, partly because of the poor audio quality. We all know that bitrate is mainly responsible for the audio quality, but not only the codec. The bitrate of an MP3 file is from 32 to 320kbps. The higher the bitrate is, the higher quality your MP3 audio will be. Therefore, some people may ask for MP3 128 kbps to 320kbps converter to help them upgrade their MP3 audio quality from 128kbps to 320kbps. If you want to convert MP3 file from 128kbps to 320kbps, the following MP3 converters 128kbps to 320kbps will help you.

Part 1: Top 5 MP3 128 kbps to 320 kbps converters

There are quite a lot of wonderful MP3 128 kbps to 320 kbps converters available for you to convert MP3 files from 128kbps to 320kbps. You could even get free MP3 converters to do this. Simply search “mp3 converter 128 kbps to 320 kbps” on google.com, and then you will be provided with various effective MP3 128 kbps to 320 kbps converter choices and even detailed guides. Below are 5 best MP3 128 kbps to 320 kbps converters we have carefully selected for you.
1. Leawo Video Converter

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As a professional media converter suite, Leawo Video Converter not only converts video and audio files between 180+ formats from regular to 1080P and even 4K, but also enables you to freely set the audio bitrate for output files freely. Performing as a media converter, Leawo Video Converter could help you convert video and audio files between various file formats like MKV to MP4, WMV to MOV, MP4 to MP3, MP3 to AAC, etc. Working as MP3 128 kbps to 320 kbps converter, Leawo Video Converter enables you to freely convert MP3 audio files and change the bitrate of MP3 audio files from 64 to 320 kbps upon your personal needs. What’s more, Leawo Video Converter even allows you to turn photos into slideshow video easily.
2. Leawo Music Recorder

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Leawo Video Converter is not the only MP3 converter 128 kbps to 320 kbps you could get from Leawo. We also provide another MP3 128 kbps to 320 kbps converter to help you convert MP3 files from 128 kbps to 320 kbps. That’s Leawo Music Recorder, a professional audio recorder software tool that could help you easily record and save any sound or audio your computer could capture into MP3 or WAV files, allowing you to set the audio bitrate from 128 kbps to 320 kbps to meet your needs. Therefore you could get MP3 audio files in desired bitrate easily.
3. iTunes

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iTunes is well known for being the data management center developed and provided by Apple Company for its iOS (iPhone, iPad and iPod) users, iTunes users and services. You could sync iOS devices with iTunes, back up iOS device to iTunes, restore data from iTunes, purchase movies and music from iTunes Store, etc. Actually, iTunes could also perform as an MP3 encoder to help you encode MP3 files with different bitrate, sample rate, channel, and other parameters. You could freely change MP3 files from 128 kbps to 320 kbps within iTunes on Mac, Windows computer freely.
4. Audacity

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Audacity is a free, open-source audio editor that supports Windows, Mac, and Linux. It could perform a number of audio editing and recording tasks such as making ringtones, mixing stereo tracks, transferring tapes and records to computer or CD, splitting recordings into separate tracks and more. You could produce 320kbps MP3 files from your 128kbps MP3 files with Audacity easily.
5. Pacemaker Editor

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Pacemaker Editor is a free application for organizing saved music, creating own mixes and also uploading those to the Internet Community. You could import music files in MP3 (16 to 320 Kbps), AAC (8 to 256 Kbps), MP3 VBR, FLAC, WAV, Ogg-Vorbis, etc., organize and manage your music library, as well as listen to separate files, since the application includes a music player of its own.
All these 5 tools could help you easily convert MP3 files from 128 kbps to 320 kbps in bitrate. Just select any of them to complete your task.

Part 2: How to convert MP3 128 kbps to 320 kbps with Music Recorder

We have talked about tools that can help you convert MP3 128 kbps to 320 kbps above. Now, let’s go deep into how to convert MP3 files from 128 kbps to 320 kbps with specific MP3 128 kbps to 320 kbps converter tools. The very first tool we would like to use is Leawo Music Recorder.

As mentioned above, Leawo Music Recorder is a professional audio recording software program that could record any sound your computer could capture. You could record online audio, local computer audio, built-in audio from microphone, etc. with the help of Leawo Music Recorder. The below steps would show you how to convert MP3 128 kbps to 320 kbps with this music recorder tool in detail. Beforehand, download and install it on your computer.

Step 1: Select audio source

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After launching Leawo Music Recorder, click the microphone icon on the main interface and then select “Record Computer Audio” in Audio Source settings panel.
Step 2: Set MP3 as output format and change bitrate to 320kpbs

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Move to the “Format” tab to set mp3 Audio(*.mp3) as output format in the “Output Format” drop-down box, and choose 320 in the drop-down box of Bit Rate(kbps) box in the “Audio Setting” panel. You could also change the Sample Rate here if you like.
Step 3: Set output directory

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Then, open the “General” tab to set output directory to save output 320kbps MP3 file in the “Output” box.
Step 4: Start to convert MP3 128 kbps to 320 kbps

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After the above settings, return to the main interface and then click the red button to start recording before you play back source 128kbps MP3 file. Click the red button again to stop recording and converting.
You could see that Leawo Music Recorder could automatically download and add music tags to your recorded MP3 file. If you like, you could as well manually edit these music tags.

Part 3: How to convert MP3 128 kbps to 320 kbps using Leawo Video Converter

Obviously, Leawo Music Recorder is suitable for converting MP3 128 kbps to 320 kbps once at a time. If you have more than one MP3 file for converting from 128 kbps to 320 kbps, Leawo Video Converter would be a better choice.

As mentioned above, Leawo Video Converter could help you easily convert MP3 files from 128 kbps to 320 kbps. And what we need to point out is that it could help you convert MP3 files from 128 kbps to 320 kbps in batch. That means you don’t need to handle MP3 128 kbps to 320 kbps conversion one by one. Download and install Leawo Video Converter on your computer. Then, the below steps would show you how to convert MP3 128 kbps to 320 kbps in detail.

Step 1: Launch Leawo Video Converter (it’s a part of Leawo Prof. Media) and then open the “Convert” module. Directly drag source MP3 files (in 128 kbps) into Leawo Video Converter.

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Step 2: Click the button right before the big green “Convert” button and then choose “Change” option on the pop-up panel to enter the Profile window. Then, open “Format > Common Audio” group to choose “MP3 Audio” as output format.

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Step 3: Click the button right the big green “Convert” button again and this time choose “Edit” option to enter the “Profile Settings” panel, where you could set Audio Codec, Sample Rate, Bit Rate (from 64 to 320) and Channel. Here, you need to choose 320kbps in Bit Rate box. After that click the bottom “OK” button.

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Step 4: Click the big green “Convert” button and then set an output directory in the “Save to” box. After that, click the bottom “Convert” button.

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Leawo Video Converter would then start to convert MP3 file from 128 kbps to 320 kbps immediately. You only need to wait for a while.
Actually, this doesn’t work at all. The audio quality will not change after you change MP3 audio bitrate from 128kbps to 320kbps since there is nothing else to add into output 320kbps MP3 audio from your source 128kbps file. Changing MP3 file from 128kbps to 320kbps in bitrate will only result in large file. If you insist on converting 128kbps MP3 file to 320kbps, this guide would be helpful.