I'm running a Toneport DI Silver that I got for 5 bucks. It is working perfectly now on Windows 7 Ultimate x64 Edition.

I am using the 3.4.3.9 drivers which are HERE

I wrestled with popping and hissing all day yesterday....I literally researched this issue for over 12 hours(hey...being unemployed does have its benefits you know)

I would recommend that you do the following WITH YOUR UX1 CONNECTED! (Not shouting...but it is very important that it stays plugged in at this point)

1. Hit WIN+BREAK keys at the same time (a little known shortcut). Select Device Manager in the top left corner.

2. Double Click the "Sound, video and game controllers"

3. Find your device and double click it

4. Click the "Driver" tab at the top

5. Hit the "Uninstall" button and if you get the option to completely remove drivers than do so.

6. Close all the stuff you opened

Now the next phase.

1. Go into Control Panel

2. Click on "Programs and Features"

3. Double click the "Line 6 Uninstaller"

4. Close everything up

5. Now you can unplug your UX1 unit.

6. Reboot.

Phase 3 AND VERY IMPORTANT

Make SURE you have the latest drivers for all of your OTHER devices installed....MOST IMPORTANTLY chipset drivers for your

motherboard. I have an ASUS P5W DH Deluxe motherboard which has the Intel 975X / ICH7 chipset. Although Windows 7 SEEMED to be

working fine for me I kept having hissing and popping issues anytime I would minimize, maximize or move a window whilst I had a DAW running with a VST. If I disabled my Nvidia Geforce 8800 and defaulted to VGA mode the problem would go away. I spent the better part of the day screwing with the video drivers and configs and never got it fixed....until I thought..."the video information is going to be heavier with the GeForce drivers when data is moving through the bus. Lets update the bus drivers and see if that helps." Since I hadn't had any other problems and everything looked good in device manager I had never installed new drivers for the bus. The Microsoft drivers were dated June 2006. The Intel drivers I installed were dated August 2009. I installed...rebooted...ran the DAW with multiple VST's and VSTi's and recorded while playing back multiple tracks....PROBLEM GONE!!!!!!!!!!!!!!!!!!!! The bus drivers Windows 7 installed were the problem all along!!!!

1. Install and update all of your PC drivers...especially chipset drivers.

2. Install the Line 6 drivers that I linked above. Plug in your unit when told to do so by the drivers.

3. Verify that you get sound by running GearBox or Pod Farm

4. If you have it there and you don't have it in your DAW than you need to make sure your DAW has the Line 6 ins and outs set up in the options. Don't forget to set your recording channel to monitor audio as well...since most DAW's don't do this by default.

Once you get that far then proceed to.....

Phase 4...and a little bizarre.

1. Goto http://www.asio4all.com/ and download the ASIO4ALL drivers.

2. Run the setup and install them.

3. Fire up your DAW software or whatever software you want when you play the guitar

4. Goto you Audio options and select the ASIO4ALL driver. In the submenu you won't see LINE 6 but probably your sound card inputs. Click on the ASIO Advanced or ASIO Configuration option. You should now be in the ASIO4ALL driver control panel. Click the little wrench icon at the lower right to go advanced mode.

5. In the WDM Device List click the button next to the Line 6 device to enable it. It will turn blue. Disable all other devices that are blue by clicking their

respective buttons.

6. I set the "ASIO Buffer Size" to 128 Samples

7. Set the "Latency Compensation" To 0 on both In and Out.

8. Uncheck the "Hardware Buffer" box

9. Set "Kernel Buffers" = 2

10. Normally the "Always Resample" option remains unchecked.

11. "Force WDM" will normally remain unchecked as well.

12. Go BACK into the options and make sure you still have the ASIO4ALL driver still selected. Check the submenus and you should have LINE6 options now. Select the Line 6 stufff.

I  set my audio recording to 48000khz and 24 bit sampling. My response time using Line 6 was averaging 15ms. I also had to set the ASIO Buffers to 256 or 512. Laggy and abyssmal.

With the ASIO4ALL driver I dropped down to an AMAZING 2.6ms.....yes TWO POINT SIX. And now I am running the ASIO buffer size at 128 with NO PROBLEMS WHATSOEVER!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Hopefully this will help someone.

If you need more help just follow up in here and I will check back. Later!