Marschall SE100
Speaker simulator system

 - This is a must for a TUBEHEAD. the rare SE100.
 It is a power brake for your tube amp (-18dB attenuation)
 Its a recording output for your tube amp (1/4 inch balanced, unbalanced and XLR balanced outputs)
 Its a microphone output for your live gig!
 It's a headphone out for your vintage tube amp.
 A reactive speaker load. No speaker required.
 2-space rack unit.
 If you play live, send your amp right to the board and dial in a quieter stage volume at flaming power tube saturation.
Speaker emulator has choice of combo or closed back emulation.
 Speaker emulator has choice of 0, 30, or 60 degree axial response.

 Eddie VH and Billy Gibbons have used this or the Groove Tubes equivalent on stage for years.
Marshall paid royalties to Groove Tubes to use the patented circuit.
Marshall eventually got tired of paying those royalties and discontinued it.

http://www.marshallamps.com/

http://www.amptone.com/ marshallse100.htm.