I have recently bought 2 x MarkBass Mo Mark Amps (the 500 Analogue Amp and the 600 Digital Amp) and have some spare modules left over. Amp Frame also available if you wanted to build your own: These modules are New Old Stock, boxed with either, no use, little use or demo use.  Pre S1M HE (High End) - £65 posted Mainland UK  EQ0 - £40 posted Mainland UK For trades - In my two amp frames at the moment I have the following modules: Pre S1M HE  , S2 (2 input) ,  -    E