Marshall VBA400 All-Tube Bass Amplifier Head (400 Watts). 8x 6550 power valves, 3x ECC83 and 1x ECC82 preamp valves, 3-band passive EQ, Active/Passive Inputs. The VBA400 is a kick ass all tube 400W bass amp and was probably introduced in 1998. It was fitted with 8 Svetlana/SED 6550C power tubes, three ECC83 tubes and an ECC82 tube.
*Excludes Brand New, B Stock, Fair, Poor, and Non-functioning. Prices exclude shipping and tax/VAT/GST.. The Marshall VBA400 is an all-tube bass amplifier head that combines classic Marshall tone with powerful performance for serious bassists. Here's a breakdown of its key features and specifications: Power and Valves: 400W of power, driven by 8x 6550 power valves and further shaped by 3x ECC83 and 1x ECC82 preamp valves,