There are various ways to string the instrument. Either you decide on a pure monochord tuning (contra G and G), a tambourine tuning (contra G, G, and D) or a chord tuning (contra G, G, D and H).
The most successful has been a split of the tuning into two halves. One half of the instrument as monochord and the other half as tambura with the possibility to tune it as a chord. This is how all possibilities have been combined.
In addition, there is the possibility to tune part of the strings to a higher tone with an extra bridge, which can be set up very easily. The strings are divided by a bridge at 165 cm, so that the base tone is only one tone lower than with the soundchair-bed (G). In addition, a second sound plane is created behind the bridge, which is also tuned to G, but two octaves higher. If you play both levels together, the sound becomes even more versatile and overtone.
The soundbed can also be built up with the playing level on top, so that it can be used like a normal monochord.
There is a table extension (40 cm long, 20 cm wide) for the soundbed, which can be mounted on the side of the instrument and can be pushed to any position. This is suitable for integrating singing bowls into the sound work.