Kurt Cobain

(from the website) "A detailed gear diagram of Kurt Cobain's stage setup that traces the signal flow of the equipment in his 1993 Nirvana "In Utero" tour guitar rig. This rig was compiled from extensive research culled from numerous concert photos, live footage, and old magazine interviews (both with Kurt and guitar tech, Earnie Bailey). This 1993 "In Utero" rig diagram by GuitarGeek.Com was originally commissioned for the May 2014 "Nirvana" issue of Total Guitar (UK)."

As you can see in this picture from 11/20/91 - Kryptonite, Baricella, Italy.

You Can see Kurt's Rack-Mount... Top to Bottom....

1) Samson BR-3 Wireless Unit.

2) Mesa Boogie Studio Preamp.

3) Marshall 9040 9000 Series Poweramp.

4) Crown Power Base 2 Poweramp.

In this photo from January 25, 1992, at the Big Day Out in Sydney, Australia, Kurt Cobain's equipment rack includes a Carver PM-1200 power amplifier. This setup also features a Samson BR-3 Wireless Unit, Mesa Boogie Studio Preamp, a blank rack panel with guitar picks, a Carver PM-900 power amplifier, and a Crest Audio 4801 power amplifier. The image, provided by Livenirvana, offers a detailed look at his live gear configuration.

In this picture 12/05/1991 Kilburn National Ballroom, london, UK.

You can see Kurt's Guitar Mount-Rack have from Top to Bottom....

1) Samson BR-3 Wireless Unit.

2) Mesa Boogie Studio Preamp.

3) Marshall 9000 Series Poweramp.

4) Crown Power Base 2 Poweramp.

He played this live once for Territorial Pissings on this show. https://www.youtube.com/watch?v=N49kYRC_EhQ

The cool thing about this power amp is it sounds good with more than just guitar, you can use it as a bass amp, piano amp and stereo system as well. But, no one really needs that much power unless you're playing to crowds of like 10,000 people.

On January 25, 1992 Hordern Pavilion (Big Day Out), Sydney, Australia If you take a look at Kurt's Mount Rack you would Notice he has a Rack Drawer 3U on it... Not sure how long Kurt kept it in his Mount-Rack as Its not seen at many shows inside his Rack, not much info where it came from or what it was used for. Usually there was a Smaller Mount Rack in back or side of the stage for Kurts Guitar Techs (Nick Close) during the "Nevermind" Tour, and then (Big John Duncan) & (Earnie Bailey) were Kurts Guitar Techs during 1992 up through the In Utero Tour.... Earnie Bailey was Kurts Main Guitar Tech and was with the band from Mid/Late 1992 until March 1, 1994 (Nirvana's Last Show Ever).... had smaller Rack Drawer in the back or on the side of the stage for Kurts Techs who kept extra Guitar Cables, Strings, Duct Tape, pretty much anything that would be needed for a show/tour in case of a quick repair or string change, whichever it maybe.

But if you look at Kurts Mount-Rack at the January 25, 1992 Hordern Pavilion (Big Day Out), Sydney, Australia show Kurt's Mount-Rack from top to bottom...

1. Samson BR-3 Wireless Unit.

2. Mesa Boogie Studio Preamp.

3. Rack Drawer 3U Blank Rack Panel with 3 Dunlop Tortex Standard 0.60mm Guitar Picks stuck to it.

4. Carver PM-1200 Poweramp.

5. Crest Audio 4801 Poweramp.

According to Ernie, Kurt was using a Carver power amp, which was made in the northwest and was very unique.