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Product 482035

SWR 550X Bass Amp Head

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World-famous SWR power in a convenient 2-space rack unit. 550W at 4 ohms, all-tube preamp, dual independent input jacks both compatible with active a...Click To Read More About This Product

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Featuring more lows from the Subwave octave generator.

World-famous SWR power in a convenient 2-space rack unit. 550W at 4 ohms, all-tube preamp, dual independent input jacks both compatible with active and passive basses, exclusive Aural Enhancer circuitry, Subwave with level control, limiter with defeat switch, active bass and treble controls, variable midrange EQ, effects blend control, and ultrahigh-polished aluminum front panel with chrome rack handles. Back panel features include sidechain mono effects loop, balanced XLR line out, tuner send, subwave footswitch jack, dual Speakon and 1/4" speaker outputs.

  • 2-space rack unit
  • 550W at 4 ohms
  • All-tube preamp
  • Dual independent input jacks both compatible with active and passive basses
  • Exclusive Aural Enhancer circuitry
  • Subwave with level control
  • Limiter with defeat switch
  • Active bass and treble controls
  • Variable midrange EQ
  • Effects blend control
  • Utra-high-polished aluminum front panel with chrome rack handles
  • Back panel features include sidechain mono effects loop
  • Balanced XLR line out
  • Tuner send
  • Subwave footswitch jack
  • Dual Speakon and 1/4" speaker outputs

Put a good head on your speaker's shoulders. Order today.


Review Snapshot

by PowerReviews

(based on 7 reviews)

Ratings Distribution

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Reviewed by 7 customers

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(1 of 1 customers found this review helpful)


A great amp

By Mike-IVnPB

from Kearny, NJ

See all my reviews

i bought this amp and a Goliath III cabinet off of someone i used to work with (both in mint condition) before i even heard it. i've been using SWR for about 4 years now and this new addition is a blessing. as soon as i took it home and plugged it in the tone and especially the clarity just blew away my Workingman's 15" combo amp. and it's LOUD. i only have the volume set at like 2 because any louder and my band members complain that i'm drowning out the guitars, and i'm only pumping out 350 watts because i'm plugged into an 8 ohm cabinet!!! i can't wait to add another cabinet so i can get this baby pumping 550 watts and really p!ss off the other guys :) my only complaints are it'd be nice if it had it's own transparency knob (i'm one for lots of brightness and twang) and i'd prefer a distortion effect instead of the sub-octave.... i guess i should get the 750x then.


The Sound of Bass

By Musicman412

from Martinez, CA

Rock solid sound. This Baby will knock your socks off. The band just loves the tone. And it will certainly cary the volume out if your outdoors or full warm body in a small club. Simple, clean sound or loud and nasty. Your choice. It pushes my 4x10 and 15 cabinets just fine..


SWR 550X

By Dogbass7

from Montgomery,Alabama

Good amp for the money. Read the owners manual and it will give hints for many sounds. Enough power for most gigs. I use this amp every week in church.


The Sound you've been waiting for.

By Smooth Bottom

from Antigo, WI

Not happy with my sound, I decided to bite the bullet and buy the best. I did. I bought the 550X with Goliath-3 and Son of Bertha. It allows you the get unbelieable highs in snapping, and thunderous lows with the Sub-wave all in a user-friendly box. Keep it simple and that's what they did.You might want a more powerful head, but from bars to festivals this head and cabinets have given me all the power that I need. Clean, crisp and powerful.


Perfect for any active Bass Player

By LowEnd_11

from Berkshire County Mass.

See all my reviews

AMAZING SOUND!!! nice smooth bottom with good punchy highs. It's simply amazing. I paired mine with a GoliathIII 4x10 and I'm getting THE sound I've been lookin for!


SWR BassBall's

By Anonymous

from Undisclosed

This amp is rocksolid, do you want tone, power, and definition? Buy this amp, pair it with a good cabinet, SWR, Eden, or similar, pick up your bass, close your eyes, and let it blow you to heaven.


SWR 550X is a solid buy!

By Jedibass

from Gilbert, AZ

The SWR 550X is a bullet-proof head that possesses both ample power and serious bass tone. The bonus is that it is very easy to use. You don't need to have an engineering degree to connect it to your speakers or to dial in a great tone. In fact, you would need to go out of your way to make this amp not sound good. The quality of the on-board Subwave octave effect is comparable to boxes that cost $200 or more and it tracks very well all the way down to the low G. At that point, the lower octave produced gets down to almost inaudible levels.I have been using the 550X with my Goliath III 4x10 cab (or two for outdoor festivals) and have been very pleased with the top-end clarity, low-mid punch and super thick bottom-end. No matter if I'm using my Pedulla 5 string, Zon fretless, or my trusty P-Bass, the results are the same?great bass tone!

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