Vocals
The combo of a Shure SM7 microphone into a Neve 1084 microphone preamp / equalizer was used for every vocal on the Thriller album. Bruce Swedien told Future Music, “We used the same mic and pre throughout the album – I used my Shure SM7, serial number 232, which is very early [...] The mic pre we used was a Neve 1084 – I’ve got two of them in a gorgeous oak case and I used to carry them with me from session to session.”
Bass
Louis Johnson’s bass line for “Billie Jean” was recorded direct through a custom DI with a UTC transformer belonging to engineer Bruce Swedien. Johnson’s bass was a Music Man Stingray custom built for him by Leo Fender. The bass was recorded along with the drums to a custom, portable mixer made by George Massenburg.
Synth
The four-chord progression of “Billie Jean” is one of the most recognizable synth parts in pop music. It was performed by Michael himself on a Yamaha CS-80 synthesizer.
Drum Set

Bruce Swedien's custom kick drum cover









2 Comments
The Bass Information is wrong:
Quote from Soundengineer Bruce Swedien: “Well Gang….. Greg Phillanganes just called me back…. The bass on P.Y.T. was a Mini-Moog!!! Recorded through my Bass Boxxx….
Bruce”
The Thriller bass sound on the original was done with two Minimoogs.
Quote from Michael Boddicker (MJ’s main synth-programmer at the time):
“The synth basses on “Thriller” “P.Y.T.,” and “Wanna Be Startin’ Somethin’.” Those were my two Richie Walbourn-modified Minimoogs, set side by side, with engineer Bruce Swedien’s special multiple-mono compression.”
edit: referring to Michael Boddicker´s two Richie Walbourn-modified Minimoog Model Ds:
“Regarding Michael Boddicker’s Mini’s (he had three of ‘em): they were essentially modular Minimoog’s. He could get into the filter, the amplifier,
the mixer, the keyboard control voltage, the gates and the mod wheels.”
One Trackback
[...] Let’s start from the top: a DI, or “direct inject” or “direct box,” is a device that allows one to plug an instrument output directly into a microphone preamp. A DI achieves this by doing two conversions: 1) from high impedance (Hi-Z) to low and 2) from unbalanced to balanced. Electronically, there are two ways (at least) to perform these conversions: 1) actively, with buffering/balancing circuitry or 2) passively, with an audio transformer. Active DIs are fairly complex, require power (usually in the form of +48Vdc “phantom power”), and are ideally suited for hi-Z signals such as those from passive guitar and bass pickups. Passive DIs are extremely simple, require no power, and are best suited for lo-Z inputs such as synthesizers and active pickups (however, they have been known to sound great on passive sources such as the “Billy Jean” bass line). [...]