Oberheim DMX drum machine with MIDI in and out.
2x DMX 4.01 (1, 0) Highly sought after vintage, classic, professional drum machine introduced circa 1981. Many familiar songs from the 80's and beyond utilize this same model.
Immediately following the success of the Linn LM-1, other manufacturers began to develop and release drum machines intended to compete with the LM-1's ease of programmability and realistic sound quality. The DMX featured sampled sounds of real drums, as well as individual tuning controls for each drum voice and a swing function. In addition, it boasted several humanizing elements such as rolls, flams, and timing variations that were meant to mimic those of real drummers. The DMX features 24 individual drum sounds derived from 11 original samples [1] and allows for a maximum 8-voice polyphony; one voice per card. It also featured eight separate outputs for individual processing, and allowed up to 100 sequences and 50 songs. One of the distinguishing features of the DMX is that it allowed integration with Oberheim's proprietary interfacing system (the Oberheim Parallel Buss) that pre-dated MIDI and allowed Oberheim equipment to be synchronized with the machine. Later models included factory-fitted MIDI ports and third party companies also manufactured MIDI interfaces for the DMX.[2] Drum and percussion samples are stored in EPROM chips placed on removable voice cards.[2] The data format is 8-bit PCM using μ-law companding, increasing sound resolution to approximately 12 bits in the analog domain (a design technique also employed by other early drum machines, including products by Linn Electronics, E-mu Systems and Sequential Circuits). The DMX's punchy and very realistic drum sound made it attractive towards many artists and producers involved in the fledging hip-hop scene and it is featured on many of the genre's early landmark recordings. It is in continuous use in dancehall reggae music. Some songs you may be familiar with which have used this model drum machine include : New Order - "Blue Monday" (1983)
Herbie Hancock and Bill Laswell - "Rockit" (1983)
The Police - "Every Breath You Take" (kick drum only)
Rene & Angela - "I'll be Good"
Keith LeBlanc - "No Sell Out"
The Cure - "The Walk"
Davy DMX - "One for the treble"
Madonna - "Holiday", "Into the Groove"
Kim Carnes - "Voyeur"
Ryan Paris - "Dolce Vita"
Run-D.M.C. - "Sucker M.C.'s" (and its entire debut album)
Midnight Star - "Midas Touch" and others
Mike Oldfield
America - "Can't Fall Asleep to a Lullaby"
Gazebo - "Lunatic"
Stevie Nicks - "Stand Back" (with live drums added)
Roni Size
Scritti Politti - "Wood Beez"
Dubstar - "Stars", "Not So Manic Now", "I Lost A Friend"
Thompson Twins
David "Hawk" Wolinski
Philippe Saisse
David Frank of The System
Dead or Alive - Sophisticated Boom Boom
Journey - "Suzanne"
Oingo Boingo - Dead Man's Party
Madness - "Fireball XL5"
Rod Stewart - "Young Turks"
Alexander O'Neal - "Innocent" (as well as his entire debut album)
Eurythmics - Sweet Dreams (Are Made of This)
Slick Rick - Entire first LP
Hiroshima - "One Wish"
Lee Malley - The Alien Undea
Steely & Clevie
Eddie Murphy - "Party All the Time"
Mary Jane Girls - "All Night Long"
The Sisters of Mercy - First and Last and Always
Phil Collins - "Sussudio"
Ivan Lins - Juntos
Chemical Brothers - Believe
Electric Light Orchestra - Secret Messages
ZZ Top - Eliminator
George Harrison - "Cheer Down"
Crispin Glover - "Clowny Clown Clown"
The B-52's - Whammy!
Patrick Cowley - Greatest Hits: Dance Party
Earl Klugh - "Soda Fountain Shuffle"
DMX (Earl Simmons)
Gene Dunlap - Tired of Being a Nice Guy (according to Wiki) A digital copy of the manual is included by request. I'm willing to bet that Oberheim is often misspelled as Oberhiem. This is an as-is, best offer listing:  Make an offer.