Each MB Series bass amplifier features two channels: Classic and Modern. The Classic channel has independent controls for Volume and Gain, allowing the users to dial in exactly the amount of "grit" desired for their tone. The Modern channel offers a crispness and crystal clarity that is ideal for slap and other modern styles. Both channels share a 3-band EQ. For increased tonal flexibility, the MB30 includes a three-position Voice Shift switch which accentuates/attenuates carefully selected frequencies.
In addition to a built-in limiter which works on both channels, the Modern channel of each amp boasts a built-in, variable Compressor. This features an LED indicator that glows green when the Compressor is switched on and red when the user-determined threshold is reached and the bass signal is being compressed.
Also included is Marshall's critically acclaimed Emulated Line Out, which provides an emulated line-level signal that's ideal for live performance or direct recording. This highly accurate speaker emulation is also present on the headphone output of both MB combos.
About the MB15 and MB30:
MB15: 15 Watt 1 x 8" combo with two channels -- Modern and Classic, built-in Limiter, variable Compressor on the Modern channel, 3-band EQ, CD input, Emulated Line Out, headphone output jack, metal grille.
MB30: 30 Watt 1 x 10" combo with two footswitchable channels -- Modern and Classic, built-in Limiter, variable Compressor on the Modern channel, 3-band EQ with 3-way Voice Shift switch, Series FX loop, CD input, Emulated Line Out, headphone output jack, metal grille.
These two new Marshall MB Series Bass Amplifiers are available now, with suggested U.S. MSRPs as follows: MB15 -- $169.00; MB30 -- $269.00.