(Based on 
Searching serial numbers
Superb Fender bass tone and performance at an unbeatable value.
The 150W Fender Rumble 150 Bass Combo Amp lets you rule stage and studio alike with unrivaled impunity. That's because it pumps 150 watts through a 15" Fender Special Design Speaker and a piezo horn (for highs), and you can blend adjusted-to-taste overdrive with pure, clean bass tone for first-rate Fender bass sound. Other useful-in-real-life features include a horn on/off switch, XLR output, four-band active EQ with "punch" and "scoop" presets, spring-loaded side handles and removable casters, all in a ported, rugged and easily portable enclosure.
The full-featured Rumble 150 bass combo features a professionally voiced pre-amp and a high efficiency digital power amplifier, a vented cabinet design for enhanced bass response, quiet variable speed fan cooling, and a piezo horn with on/off switch. Get a killer overdrive effect with the help of the gain and blend controls (footswitchable with optional footswitch), optimized for bass to give mellow warmth or heavy distorted tones. The Punch and scoop preset EQ shapes are ideal for finger and slap style tones. The 4-band active EQ delta comp adaptive compression circuitry gives you even tone, without losing the finer details of your sound. The included line out is great for direct recording or live use, and the combo also features a headphone jack for silent jamming and practicing. An included auxilliary input works great for CD/MP3, tape or drum machine to help you get into the mix and work out your rhythms and tempos. Black vinyl covering, rugged black metal grille, and nickel corners round out the sturdy shell to this combo.
Based on 
