Avid on Thursday showed off its updated Eleven Rack guitar amp and effects hardware at the NAMM music show.

[ad#Google Adsense 300×250 in story]Eleven Rack Expansion Pack adds 19 new guitar amps and effects emulations, including an all-new bass amp/cabinet simulation. The rack also got a parametric EQ and a compressor.

A dynamic stereo delay with full ducking, panning and filtering control on delay feedback was also added.

New amps added with the expansion pack include the Blue Line Bass (based on the 1969 Ampeg SVT head); J45 (based on the 1965 Marshall JTM45 head); Black SR (based on the 1965 Fender Super Reverb combo amp); MS-30 (based on the 1993 Matchless D/C-30 combo amp); Plexiglas Vari (based on the 1967 Marshall Super Lead “Plexi” head with Variac modification); Plexiglas 50W (based on the 1968 Marshall Super Lead 50W head); RB-01b (based on the Bogner Ecstasy 101B head); Custom Modern Clean Amp; Custom Modern Super Overdrive; Custom Modern 800; Custom Vintage Clean; Custom Vintage Overdrive; and Custom Bass.

New speaker cabinet models include the 8×10 Blue Line (based on an Ampeg SVT 8×10 with “towel bar”); 4×10 Black SR (based on a Fender Super Reverb 4×10 with CTS Alnico* speakers); 4×12 Green 20W (based on a Marshall 4×12 with Celestion Heritage G12M speakers); 4×12 65W (based on a Marshall 4×12 with original issue Celestion G12-65 speakers); 2×12 B30 (based on a Bogner 2×12 with Celestion Vintage 30 speakers); 2×12 Silver Cone (based on a Roland JC-120 2×12) 1×15 Open Back (based on an Ampeg Reverberocket 1×15 with Jensen C15N speaker); and a 1×8 Custom.

The Eleven Rack Expansion Pack will cost $99 and will be available on March 22, 2011.