￥Brit J1 Preamp is the TH-U expansion library, created by Choptones, seeking to recreate the sound of a Marshall JMP1 Preamp.

 

The library contains 154 rigs:

 

26 rigs are created from the 26 factory presets built into the original preamplifier, by connecting the pre to a JCM800 power amp.
128 rigs are created from setups with multiple cabinets, microphones and overdrive pedals, in order to provide a wider range of tones. A Mesa 2:90 power amp has been used.
The Brit J1 Preamp rigs have been captured using the following gear*:

 

Cabinets

 

Engl 4×12 loaded with Celestion V60
EVH 5150III 4×12 loaded with Celestion G12EVH
Marshall 4×12 loaded with Celestion G12M, G12T75
Marshall 4×12 loaded with Scumback M75
Mesa Boogie 4×12 loaded with Celestion V30, V-Type
Soldano 4×12 loaded with Eminence Legend V12
Custom Audio 4×12 loaded with Celestion Creamback 75
Hughes&Kettner 4×12 loaded with Celestion G12M
Marshall 2×12 loaded with Celestion V30, G12M
Mics

 

Shure SM57, SM7
Royer R121
Sennheiser MD421, e609
Neumann U87
Audix i5
Heil PR30
Beyerdynamic M160, M201
AKG C414
Boosted with:

 

Mesa Flux Drive
Mesa Grid Slammer
MXR Berzerker OD
MXR Modified OD
Ibanez TS9