Packing 30-watts of power the MB30 1x10” combo is the MB15’s big brother. In addition to its increased output and larger speaker, as you might expect, it also boasts more fire-power in terms of features

 

Other Features
• Two footswitchable Channels – Modern & Classic
• Shared, 3-band tone network
• 3-way Voice Switch that reconfigures the all-important mids
• Switchable (on/off), variable compressor on the Modern channel
• Series FX loop
• Limiter
• CD input with lead included
• Headphone jack
• Emulated line out
• Metal Grill
Two footswitchable channels: Classic and Modern.
“More is better” is true for many customers, esp. when it comes to comparing two combos with the same street price. Here’s what the two channels offer.

 

Vintage: with independent controls for Volume & Gain, this offers the grit and girth worthy of the company known by many as “the Sound of Rock.”

Modern: for modern(ish) styles like slap, crispness and clarity is a must and this is perfect channel to use when crystal clean notes are the order of the day. Plus, as 30-watts is big enough for jamming, the fact these two channels are footswitchable is huge.

Selectable, Variable Compressor on the Modern Channel.
In the bass world compression is a big deal when a smooth consistent low-end pulse is required and the MB30 offers it while the Rumble 30 (and the SW35) doesn’t....score!! In addition to having its own level control, the built-in compression also boasts an LED indicator which glows green when the Compressor is switched on and then changes to red whenever the compression threshold is reached and the effect kicks in.

IMPORTANT NOTE: Other bass amps may have limiting but limiting and compression are not the same thing!! The vast majority of bass amps house a limiter and its sole purpose is to prevent the output stage from clipping (not a desirable distortion!) when the amp is cranked.

3-way Voice Shift switch
This obviously adds hugely to the tonal flexibility of the MB30. Here’s what the three positions do:

Position 1: smooth lows, restrained mids with a slight bump in the highs combine for a classic valve amp bass sound

Position 2: the low mids are accentuated while the upper mids are subtly attenuated, giving an aggressive growl

Position 3: the mids are scooped for a cutting, “in your face” tone.
Add this useful feature to the MB30’s 3 other EQ controls (Bass, Voice and Treble) and you’ve got a lot of tonal real-estate quite literally at your fingertips

Emulated Line Out
With all the home recording being done today on digital recorders and computers, this is a USP that shouldn’t be ignored. It’s way more useful than an External Speaker jack on a 15-watt combo, that’s fer damned sure!

Summary
The MB30 is a compact, rugged brute that’s competitively priced and houses a feature set that's sure to impress.

MB30 Page at Marshallamps.com