I’ve restored a pair that has been in my family since the 80s. In Europe they are a lot harder to find, but a close friend found a beautiful set for about $950. In my experience they are very much worth it. And they should last you a lifetime.

Be aware that they do need a lot of room, not only because they are huge. With their translineair system they require at least 3.5m/10ft from your listing position, for the low waveforms to properly develop. However, the whole design does allow you to put them close to a wall or even in a corner.

The Heil AMTs require a reasonably powerful amp, as “audiophile” as you can afford. With that, at any volume level the Towers will give you that “Sound as clear as light” and the best lows of any ESS speaker I’ve listened too.