Skip to main content Skip to footer
Call and save on most brands call 866 498 7882

Line 6 LowDown LD400 Pro 2x10" 400W Bass Combo Amp

Item #: 
  • Write a Review

The Line 6 LowDown LD400 Pro is a bass amp that offers venue-filling volume and LowDown tone in a powerful and punchy 2x10 combo package. Boasting a relentless, fully adjustable Rock tone, and 4 addit... Click To Read More About This Product

We're sorry—we no longer carry this item.

Find a similar product below or contact us for a recommendation of a great alternative.

Call: 866-498-7882 Email

Recommended Products

The Line 6 LowDown LD400 Pro is a bass amp that offers venue-filling volume and LowDown tone in a powerful and punchy 2x10 combo package. Boasting a relentless, fully adjustable Rock tone, and 4 additional required tones ranging from R&B to Grind, the LD400 Pro bass amp offers power, versatility, and commanding tonal definition for the pro player.

The Line 6 LD400 amp also comes with a crucial set of 5 effects, led by a dedicated studio-quality compressor based on the LA-2A, and including a Smart Control FX Envelope Filter, Octaver, Chorus, and a full-featured bass Synth with fully adjustable parameters.

Designed for the gigging bassist, the LD400 Pro is a versatile amp that features an array of necessary ins, outs, and hardware, including an NL4M-series Speakon speaker output for an external cabinet, a balanced XLR direct output with exclusive A.I.R. processing, a 1/4" preamp output, and a pair of brawny 10" speakers ready to rattle some ribs and project your sound.

Amp Models:

Inspired by the Eden Traveler, this model is all about clean, funk, and fusion bass tone. It'll give you warm lows and punchy highs.


Inspired by a '68 B-15 Flip Top, this model is a tribute to those clean, fat, bass tones of the late 60's and early 70's. It is the kind of tone you hear on most Motown recordings, as played by the pioneering young bassist James Jamerson.


This model is inspired by the '74 Ampeg SVT which has appeared on innumerable recordings and arena stages worldwide. Now, all the tone of the head and 300-pound behemoth 8x10 cab is available without having to lookup a chiropractor.


Based on a '68 Marshall Super Bass, this model delivers the kind of overdriven bass sounds brought to us by late '60s British rock pioneers like Cream and The Who.


As the name would suggest, this is for the modern rock sound of the late '90s and the new millennium popular in bands like Alice in Chains, Mudvayne, and Rage Against The Machine. Based on a distorted SansAmp PSA-1 into an SVT with a direct clean bass signal mixed in, this model gives you that angry, clear, and punchy aggression that cuts through the mix and takes your sound to DEFCON 1.

Effects models:

This pro LA-2A-style compressor is ideal for helping every bass player - particularly the ones who play with their fingers -- achieve a smooth and consistent signal at any volume.

Envelope filter

Based on a Q-Tron, this envelope filter effect can be heard on tons of major funk and rock tunes.


Based on the EBS OctaBass, this effect produces a single note one octave below the note you're playing to add a powerful new vibe to your sound.


Based on the much loved T.C. Electronic Chorus, this transparent, smooth, and expressive chorus was built for bass, and using it won't reduce your low end. It's an especially beautiful complement for fretless basses.


Sitting at the back of the model knob is this secret weapon that turns LowDown into a '70s classic bass synth. From funk to modern rock, this fully adjustable synth delivers incredible tones while tracking every dynamic move you make.


5 bass amp models: Clean, R&B, Rock, Brit, and Grind
5 bass effects: dedicated studio-grade Compressor; 3 Smart Control FX including Envelope Filter, Octaver, and Chorus; and a fully adjustable bass Synth
Deep switch for supreme fatness
4 programmable channel memories, 36 with optional FBV Shortboard controller
Front-panel tuner
NL4M-series Speakon four-pole mono speaker output for external cabinet
Balanced XLR direct output with exclusive A.I.R. processing (plug straight into the snake at the gig or into the board at the studio)
1/4" preamp output
Headphone out
1/8" CD/MP3 input
Jack for optional FBV Express or FBV Shortboard foot controllers
400 watts
2x10" speakers and horn
  • Customer Reviews

Review Snapshot

by PowerReviews
Line 6LowDown LD400 Pro 2x10" 400W Bass Combo Amp

(based on 5 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 5 customers

Displaying reviews 1-5

Back to Top

(61 of 65 customers found this review helpful)


Line6 LD400

By Scott Ashmore

from Paris, Texas

Comments about Line 6 LowDown LD400 Pro 2x10" 400W Bass Combo Amp:

This amp was exactly as advertised. Tones are great, clean and powerful. I play in a cover band that plays everything from new county to 70's funk and rock. I have been playing 30+ years and this amp has the sound I have been looking for with portability. It looks great and sounds fantastic with my MusicMan. I could not be any more satisfied with the Line6 LD400. I would recommend this amp everytime.

(19 of 20 customers found this review helpful)


Great Value and Lots of Fun

By D Thomas

from New Haven, CT

Comments about Line 6 LowDown LD400 Pro 2x10" 400W Bass Combo Amp:

I haven't owned a bass amp for a while. I sold my Bassman Twin and cabinet years ago because I moved into a walk-up apartment and didn't have the space or neighbors for it. This isn't the equivalent of the Bassman, but it sure is a great little combo amp and pumps out a lot of clean (or gritty) sounding bass. I was impressed out of the box by how solid (and heavy) the amp feels compared to a few small amps I had looked at in the store. I can understand why Line6 would call this a Pro amp. Though, I'd hesitate to use it on a gig in a large auditorium, it would do fine for a typical bar or restaurant gig, wedding reception, etc. The built-in tones are mostly useful -- a good clean sound and a couple of classic sounding blues and rock amps. They're good foundations for all the music I play and there's a lot more adjustable features than I've tinkered with so far. I tried the bass-synth setting and found it to be more of a novelty than a practical bass synth. I've used the Boss SYB-5 with the expression pedal and remember it being more musically interesting. I don't have a Line 6 FBV controller with this amp, but it might make the synth feature a lot more useful. Overall, I bought this amp because I own other Line 6 gear and like it. If I had a bigger budget, I might have gone back to a Fender Bassman or a Mesa Boogie. For the type of playing I do and relatively infrequent gigs, I probably made a better choice with the LD400.

(19 of 22 customers found this review helpful)


Just What I Needed

By Kevin Deal

from Ames, IA.

Comments about Line 6 LowDown LD400 Pro 2x10" 400W Bass Combo Amp:

I bought the line 6 LD400 pro based on online reviews and product description. I have found it to be a very versitile and useful amp. I have been an Ampeg SVT user but got tired of lugging around huge heavy equipment and found this to be a good replacement. All the features are easy to understand and use. I bought this amp on Saturday afternoon and used it a a gig that night.I would recommend it to any working bassist.

(6 of 7 customers found this review helpful)


Amazing Sound, worth every penny

By John Steady

from El Paso, Texas

Comments about Line 6 LowDown LD400 Pro 2x10" 400W Bass Combo Amp:

This amp is amazing I must say. I had a 200 watt 15 inch speaker before this and this amp blows it away. I would way rather prefer 2-10 inch speakers as oppose to 1-15 inch speaker, with this you still get an amazing low and high ends and crazy power. The amp models and effects on this amp kick some major butt !!! It pushes out alot of power with out getting distorted or fuzzy but if you want distortion you got it on there. THe tuner and deep buttons are great, also you have 4 preset/programable channel memories to save your settings. WOW, Also if you buy the optional footswitch you have I think up to 36 preset/programable memories. The tonal varieties with this amp are endless. Definitly a good buy.

(1 of 1 customers found this review helpful)


Quality Control Problem


from Charlottesville, VA

Comments about Line 6 LowDown LD400 Pro 2x10" 400W Bass Combo Amp:

I'm glad so many people have had a good experience with this amp. I had hoped to tell everyone how great it is. It has really cool features and sounds. The size and weight are manageable considering what's included. Also, thanks ABF Freight System for super-fast delivery. Now the sad part. After fiddling around with the amp for a few minutes, I realized I could not get the clean sounds I?d read about in other customers? reviews. Applying my deductive skills, I observed that when I listened to the pre-amp through head phones, it sounded great. So, the problem must be in the power amp, the speakers or the cabinet. I drove it down to the nearest Guitar Center, where the experts convened and concluded that the buzz was in the cabinet. They were very nice and offered to have a new one shipped to my house. So I asked myself, ?Self, how many bad products are you going to buy from this company before you ditch the company?? The answer turned out to be ?ONE and only ONE.? So? I down-sized and up-graded to a Markbass Mini CMD121P. Now I?m way over budget and will have to spend even more to get the amp modeling and synth effects that were included in the Line 6. I?m broke again and hoping my car doesn?t break down anytime soon because I can?t afford to fix it. Well, at least I have a good solid bass base to build on now. It feels better. I hope Line 6 can learn from this an improve thier quality control.

Displaying reviews 1-5

Back to Top

You are changing the Ship-To country.

Our product catalog varies by country due to manufacturer restrictions. If you change the Ship-To country, some or all of the items in your cart may not ship to the new destination.