This is server

    QAudioRecorder* recorder = new QAudioRecorder();
    QAudioProbe* probe = new QAudioProbe;

    connect(probe, SIGNAL(audioBufferProbed(QAudioBuffer)), this, SLOT(processBuffer(QAudioBuffer)));
    

    QAudioEncoderSettings audioSettings;
    audioSettings.setCodec("audio/mpeg");
    audioSettings.setQuality(QMultimedia::HighQuality);

    recorder->setEncodingSettings(audioSettings);

    
    qDebug() << "probe ritorna " << probe->setSource(recorder); // Returns true, hopefully.
    //qDebug() << "" << recorder->setOutputLocation(QUrl::fromLocalFile("test"));

    recorder->record(); // Now we can do things like calculating levels or performing an FFT    
    
    myAudioServer = new MyAudioServer();
    myAudioServer->startServer();

This is the way as trasfer to socket

void QtVideoWidgetsIssueTrack::processBuffer(const QAudioBuffer& buffer){
    QByteArray byteArr;
    byteArr.append(buffer.constData<char>(), buffer.byteCount());
    QByteArray Data = byteArr;
    qDebug() << myAudioServer->isListening();
    QTcpSocket* myAudioClient = myAudioServer->getSocket();
    qDebug() << myAudioClient;
    qDebug() << "in processBuffer";
    if (myAudioClient != nullptr) {
        myAudioClient->write(Data, Data.count());
        myAudioClient->waitForBytesWritten();
    }
}

Now the client

void MyThreadAudioTcpSocket::readyRead()
{

    

    while (socket->bytesAvailable() > 0) {

        //fare il play da QByteArray
          // get default output device
        QByteArray* yourSoundData = new QByteArray(socket->readAll());
        QBuffer* buffer = new QBuffer;
        buffer->setData(yourSoundData->data(),yourSoundData->size());
        buffer->open(QBuffer::ReadOnly);
        
        QAudioFormat format;
        format.setSampleSize(16);
        format.setSampleRate(22050);
        format.setChannelCount(1);
        format.setCodec("audio/mpeg");
        format.setByteOrder(QAudioFormat::LittleEndian);
        format.setSampleType(QAudioFormat::UnSignedInt);

        QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice());
        if (!info.isFormatSupported(format)) {
            format = info.nearestFormat(format);
            qDebug() << "formato non supportato";
        }
       
        QAudioOutput *output = new QAudioOutput(format);
        output->moveToThread(this);
        output->start(buffer);
    }
}

I attach what I hear, only noise... !
wav file

Someone can You help me to understand where wrong in source code.