From the company that invented the electric bass amp, the Fender Rumble Series is a mighty leap forward in the evolution of portable bass amps. With its beefier power amp and larger, ported speaker enclosure, the Rumble 25 pumps volume and deep bass response. In addition to standard volume and EQ controls, the Rumble 25 adds a newly-developed overdrive circuit and switchable Contour control, delivering gritty bite and slap-worthy punch at the mere push of a button.
- A beefy 25 watt power amp and ported speaker enclosure pumps volume and deep bass response.
- Practice privately with the 1/4″ headphone output jack that also mutes the speaker output.
- Jam along with your favorite tracks by simply plugging a MP3 player into the 1/8″ Auxiliary input jack and instantly become part of the band.
- Enjoy the peace of mind that this amp is backed by Fender’s 5 Year Transferable Warranty.





































Jonathan Pass –
I have gigged with this amp for close to a year now (about 30+ shows) and this little guy is amazing in the tone to weight department. For years I played through an Ampeg HLF4x10 cabinet with a Yorkville Bassmaster head 400watt (the tone of this can re-arrange your guts) and I loved it…for the tone, but the rig is beastly heavy and big.I was initially interested in the Rumble 500 with the two 10″ speakers (because I like the punchiness of 10 inch speakers) but when I went to the music store then only had the Rumble 100 watts. I tried it out and played through the amp for close to an hour (I play G&L L-2000 USA). The amp sounded great…just awesome tone, beefy bottom, and lots of adjustments in the EQ’s. And it only weighs 22 lbs.! So my wife got me one for Christmas (but gave it to me sooner because we had shows and why wait?) I play in a four piece (now five) rock cover band and this things gets plenty loud. 90% of our indoor venues are bars, restaurants or social clubs (American Legions, Eagles, etc.) and this amp is more than enough. I have used it for numerous out door gigs as well and with the DI out to the PA, the amp is fine. I have never had the gain past 25% and the main past 50% for any gig. In fact, I can set the upper limit of the main to about 45% and then control my volume with the volume pot on the bass itself. You can switch to a distorted channel…I’d say that is fairly descent, better than many pedals I have tried, but I rarely use it (except for Smoke on the Water…but not always…more of a personal choice).There is an effects loop, but that is not controlled by a foot switch (only switching the between the main channel and the dirty channel is controlled by a foot switch), and that is the only major knock on this amp. But for price, the tone (fantastic) and the weight (the box feels like it is empty!) this amp is tough to beat. At the store, I tried Ampegs small combo that are comparable (and I love my Ampeg cabinet) but this Fender Rumble sounded markedly better to me. It is not just the tone, but the amp really responds to how you play the bass. The guitar players in the band are jealous at how little this thing weighs. And it hardly takes up any room in the van when we load out for shows. You can gig with this amp, no problem. I should add that our band really endeavors to keep our stage levels reasonable…a lot of venues and crowds these days just don’t go for the wall of noise anymore. But if you play in a band where your guitars run full or half stacks, this amp can still hang if you also direct out to the PA and use the amp itself to monitor. I really care about my tone, and my Ampeg/Yorkville rig destroys…I played that rig for years….but 9/10 times it is overkill, and who knows if the audience truly appreciates it anyway…? the Fender Rumble 100 sounds great…it is super light and small, but packs a solid punch. I also have a Peavy 75 watt combo (my first amp) 12″ speaker…also sounds really good, but weighs almost three times as much, and no where near as loud. I can’t recommend this amp enough.If you are looking for your fist amp, or you’re looking for you next amp and are tired of dealing with a monster rig, this is what you ought to purchase. As I have gone on in years playing shows…the saying ‘less is more’ holds true.A side note: This amp did stop working near the end of our last set at a party…we were outside, but the amp was in shade…the power just cut out…and would not power back up, at all. (I plugged my bass into the board and when finished the show). Fender has a 5 year warranty and the place my wife bought it has a two year warranty on top of that…I sent it back ($22 my cost) and i was sent a brand new amp (Fender does not repair these amps, they only replace from what I was told). Anyway, the replacement came back FedEx in two days and this little amp is back in business and 4 months later (another dozen or so shows and a lost of rehearsals) it is still going strong. …there is a part of me that still wonders if I would like the 500 watt with the two 10″ speakers even more…but I am very satisfied with the little guy. (I added a photo of a gig we did at a wine festival so you can see I have used it outdoors…the amp is on the right side of the drums, and it looks very nice with the silver speaker cover…our band is WonderChunk…wonderchunk-dot-com) Thanks for reading. Hopefully this helps you!!
pizelli –
A little loud for my needs, the 15 might have been an option but its a slightly different electronics configuration. It has the same grill and knobs as my Supersonic 22, along with the same wildly sensitive EQ, the tiniest of adjustments in the Low/Mid/High knobs changes the tone dramatically. I run this 25 just at the point where it goes from off to on volume-wise. There are a lot of tones and dynamics you can dial up whether you engage the Overdrive, the Contour or both. I found that engaging both works for me. I also run a Keeley Bassist Limiting Amplifier Pedal in front to get a little compression/limiting/transient smoothing going on. The loudest I’ve had the Rumble 25 is 2 but I have to imagine it could allow for some small live settings volume wise, but tone will change like all my otherFender amps once to you start to push it. For 99 dollars, I would highly recommend this amp. It would still be a great amp up to $200.
DktrDoom –
I was surprised by the size and price of this amp. I expected something smaller. Been to a few music stores and the prices for small portable ones were equal or close to this. The sound is great for a first bass, the features are also perfect. Not big fender guy but they’re winning me over. If you’re looking for a first bass amp for you or your kids, jamming at home or the garage band. Go for it
Dr. Heem –
Turned it on, and the jewel light flickered and died. I slapped it a few times and it stayed on a while. Unable to access from outside. Now it won’t come on at all. Get it together, Fender. I bought this amp to gig!There were lots of rattles even at low volume. I took the grill cover off, and tightened about a dozen loose screws on the speakers and corner protectors. For $700 this is inexcusable. Rattles are now gone.–Unable to buy a dust cover, they are out of stock. Hilarious! I am using the large clear bag that was in the box.-There is no mute switch, which for the price is hard to believe. I overlooked it when ordering.Lots of tonal variations, I gigged it the same day (loud), and used the line out for recording, along with a 1×15 cab. Everyone liked the sound. Easy to carry with one hand.I am gonna keep the box for a while in case it stops working. ‘Made In Indonesia’ does not inspire me with confidence. I find this amp overpriced. At least it looks nice!
Naomi Jones –
Fantastic sound. Great sound adjustment options. Will rumble the whole house if it’s cranked up. Tough to beat this amp at such a low price. Most every site was over $100. Amazon had this priced much lower. Veery happy.
JD-BuyItRight –
Fender Rumble 40 is a keeper. It gives great sound at low levels for practice and then crank it up with the band for small venues. Light weight for portability and 4 tone controls to dial in your sound. All for $200… 5 Stars
Edward Whittaker –
Helluva punch in this 22 lb. unit! Contouring is really easy! Love it!!!
Miss V –
The 15″ speaker provides a good bottom and thump but does not have the volume I was expecting even with an extension cab and it gets a bit distorted after 12. So I’ll go with the Rumble 500.