In addition to the very successful Phonola, Hupfeld AG in Leipzig launched the DEA (lat. "Goddess") reproduction system in 1907. We suspect that Hupfeld used the DEA technology from the beginning for the artist's rolls, but was too slow to launch a finished customer product in competition with Welte. In 1912, Hupfeld advertised that it had brought the first reproduction grand piano onto the market - Welte did not offer the reproduction technology in grand pianos until 1913. However, the market for reproduction instruments was already almost saturated and fashion demanded self-playing violins and other innovations. As a result, the DEA system was not able to establish itself on the market. The Hupfeld DEA had the widest of all scales used with 106 holes. Here, too, the emphasis controls for bass and treble are on the left and right.

The horn field DEA scale has the following assignment (from left to right):

Holes 1-6: bass emphasis from PP - FF

Hole 7-49: Tones A2 to d1

Hole 50: Fortepedal on

Hole 51: clay e1

Hole 52: Fortepedal down

Hole 53: clay f1

Hole 54: short=switch-off, long=return

Hole 55: clay fis1

Hole 56: short=piano pedal down, long=piano pedal on

Hole 57: clay g1

Hole 58: short=resistance on, long=resistance off

Hole 59-96: notes g sharp1 to a4

Hole 97: Crescendo bass emphasis

Hole 98: unoccupied

Hole 99: unoccupied

Hole 100: Crescendo treble emphasis

Holes 101-106: accentuation treble PP to FF

DEA instruments are very rarely found today - mostly as Rönisch upright or grand pianos. Due to the comparatively low distribution only a few original rolls are preserved today.