ROLAND CR-78 RHYTHM DRUM MACHINE

images via this auction

I never noticed the sliders on the SH-32 are similar until now.

Auction description via wikipedia:
"The Roland CompuRhythm CR-78 is a drum machine launched in 1978.
Although primitive by today's standards, the CR-78 represented an important advance in drum machine technology at the time. The wood effect cabinet and preset rhythms of the CR-78 such as Waltz, Bossa Nova and Rhumba suggest that it was seen by its designers as primarily an accompaniment for an electric organ, but the CR-78 became one of the favorite instruments of New Wave and electronic musicians in the late 1970s and early 1980s. Songs that make prominent use of the Roland CR-78 include Heart of Glass by Blondie and In the Air Tonight by Phil Collins. [2]

The machine and its controls
The CR-78 used analog drum voices, which sounded very little like real percussion instruments, but they instead had their own distinctive sounds. The unit also incorporated an early Intel microprocessor to provide digital control of its functions.[3]

Previous Roland drum machines had offered only a selection of preset rhythms. The CR-78's key new feature was that in addition to offering 34 preset rhythms, it provided four programmable memory locations for storing patterns created by the user. These could be created by using step programming with the WS-1 box, which was available as an optional extra. [4]

The CR-78's front panel allowed the user to customize the preset rhythms by altering the volume balance between bass and treble sounds, canceling some sounds altogether, and adding ring modulation ("metal beat") to the cymbal sounds. Many of the preset rhythms have a memorable character, and the ability to manipulate them further made the CR-78 a versatile instrument.

No digital control of tempo was provided on the front panel, with only an analog knob for the function. However the CR-78 would also accept an external V-trig clock. [5]

A selection of preset fills and rhythm variations were also available, either to trigger manually, or automatically every 2, 4, 8 or 16 bars. Some of these fills were used in synth-pop songs such as Enola Gay by Orchestral Manoeuvres in the Dark, Underpass by John Foxx and Vienna by Ultravox.

Roland also produced a simpler drum machine, the CompuRhythm CR-68. This was essentially the same as the CR-78, but without programmable patterns or the ability to fade drum sounds in and out. At the same time Roland also sold the TR-66, a smaller unit which offered fewer preset rhythms and no programmability.[6]

Sounds and rhythms
The CR-78's built-in rhythm sounds were a further development of those available on the earlier Roland Rhythm 33, 55 and 77 machines.

The analog percussion voices consisted of: bass drum, snare drum, rim shot, hi-hat, cymbal, maracas, claves, cowbell, high bongo, low bongo, low conga, tambourine, guiro, and "metal beat" (a ring modulated accent that could be overlaid on the hi-hat voice). The CR-78 had an accent control, which increased the loudness of certain steps in a pattern.

The rhythm patterns were: Rock 1, Rock 2, Rock 3, Rock 4, Disco 1 and Disco 2 (all available in 'A' or 'B' variations); Waltz, Shuffle, Slow Rock, Swing, Foxtrot, Tango, Boogie, Enka, Bossa Nova, Samba, Mambo and Chacha, Beguine and Rhumba. It was possible to select more than one rhythm at a time, and also mute drum sounds from a pattern using the balance knob and dedicated cancel buttons."