![]() We’ll take a look at what these circuit boards actually look like in a second. So the relative dimensions are not right in the figure. ![]() It is based on visual inspections and probing with a multimeter, so there is a chance that it might not be 100% accurate.Īlso, in reality, the main (circuit) board is bigger than the preamp (circuit) board. In figure 1 below I have, to the best of my abilities, made a block-schematic that shows the LP120 signal path. To explain why the LP120 preamp causes problems as best as I can, I have made a few illustrations that I am going to use throughout this article. Only the Audio-Technica engineers can give 100% qualified explanations of how the LP-120 internal circuits are designed and intended to work. And you will probably lose the warranty.Īlso, don’ take my thoughts, opinions and advice in this article for absolute facts. You might destroy your LP120 if you get it wrong. I have to add that any attempt to follow this guide or in any other way modify your LP120 is totally on your own risk. Where two of the methods don’t require any extra cables at all. And I will show you three different ways to remove the preamp. ![]() I will use pictures and schematics to explain why the LP120 preamp reduces the sound quality of the LP120. But it made a difference.Īnd in this article, I will take a detailed look at the LP120 preamp removal mod. ![]() Upgrading the cartridge had a much bigger effect. It is not a night and day kind of difference. It has become a better sounding turntable. The turntable now sounds more open and lively. I can report that I have finally removed the preamp from my AT-LP120. If you are interested in LP120 sound improvement in general, please also check out this article where I find the very best cartridge upgrade for the LP120. To my knowledge, Audio-Technica has fixed this issue on their upgraded ‘X’ version, the AT-LP120XUSB, that was released in 2020 or so. And, in essence, makes the LP120 sound better.Įdit: This upgrade only applies to the original version of the AT-LP120USB. The preamp removal modification removes this Low-Pass filter and makes the LP120 come to life musically. Remove components that form what is called a low-pass filter or treble-cut filter that seem to filter out some of the higher tones from the music and reduces the LP120’s overall sonic performance. The objective of the LP120 preamp mod is to remove a few electrical components from the LP120’s music signal path. So, what is the point with this modification? What does the mod actually do? And it seems that pretty much everyone that takes on the project are very happy with the result afterward. Personally, I have read and watched my share of forum posts and YouTube videos that document the LP120 preamp mod. While others still have questions on how to do it. Many owners can report that they have successfully removed the built-in preamp. If you are a passionate AT-LP120 owner or consider becoming one, then you are likely aware of the LP120 preamp removal mod that is discussed in forums, reddits and in Youtube videos.
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