This is an article culled from archive material, circa 1997.
The TX7 was the table-top "expander" version of the phenomenally
successful
DX7 synthesiser. As well as acting as a synthesiser
in its own right, it provided extra storage for "performance" patches
for a DX7, which only has one global performance setup.
The intention was that the DX7 and TX7 be linked so that the TX would
download performance information to the DX as patches were selected.
The TX7 had a front-panel editing interface for the performance data,
but not for the onboard patches. Other than that, the voice architecture
was identical to the DX7's. The "clock radio" casing of the unit,
although not as bizarre as that of the
TQ5, was unconvenient,
and there are better FM sound modules around, from the cheap and cheerful
4-operator
TX81Z to the beefy
TX802 and
TG-77.