The TX81z is a 1-unit rackmount FM synthesizer first released in 1986. It uses four operators and can use other waveforms than sine, and was the first FM synthesizer to allow programming with alternate waveforms.
It has 8 notes of polyphony and is 8-part multitimbral. It has 128 factory patches in 4 banks of 32 and also has a single bank of 32 user-programmable memories. It can load patches from Yamaha's DX21, DX27, DX100, and FB01 synthesizers.
Year Released: 1978
Keyboard: 49 Keys
(Same manuals as Korg MS2000)
Manual (Version 3.0): http://www.soundprogramming.net/manuals/Waldorf_Q_Manual_3.0.pdf
Manual (Original): http://www.soundprogramming.net/manuals/Waldorf_Q_Manual.pdf
Manual (3.0 Addendum): http://www.soundprogramming.net/manuals/Waldorf_Q_Manual_3.0Addendum.pdf