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SWR WorkingPro 400 Bass Amplifier Head (400 Watts)

Unlock true SWR tone shaping features and unique Aural Enhancer circuitry supported by 400 Watts of juice at an introductory price. 14 People rated this product:

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Manufacturer's Description for SWR WorkingPro 400 Bass Amplifier Head (400 Watts)

Get into the legendary SWR sound and tone-shaping features at an unbelievably low price! The WorkingPro 400 gives you classic SWR tone and clarity, the exclusive tone-expanding Aural Enhancer circuitry, 400 watts of dependable solid-state power and the tonal sweet spots of a simple 3-band active EQ with variable midrange. And with SWR's brand new Bass Intensifier circuitry, you can thicken your low-end response at the frequency range of your choice, making the 400 watts onboard louder than ever before. It's also rackmountable, and equipped with a two-button footswitch (Bass Intensifier and Tuning Mute).

Front Panel Features
Input jack with -10 level pad switch

Tuning Mute switch with LED indicator

Gain control with preamp clip LED indicator

Exclusive Aural Enhancer circuitry

NEW Bass Intensifier circuit:

Bass Intensifier engage switch with LED indicator

Bass Intensifier level

Bass Intensifier cutoff

Active Bass control

Active Midrange Level control

Midrange Frequency control

Active Treble control

Active Transparency control

Effects Blonde control

Automatic Limiter active LED indicator

Automatic Limiter defeat switch

Power amp clip LED indicator

Master Volume control

Power On/Off Switch

Dual rack handles

Rear Panel Features
Balanced XLR Output jack

XLR mode switch (Direct/pre-EQ, Line/post-EQ)

XLR ground/lift switch

XLR level pad switch (0db, -10db)

Sidechain Effects Loop (EFX send, EFX return jacks)

Tuner out jack (stays live when Tuning Mute is engaged)

Unbalanced Line Out jack

Stereo Headphones jack

Footswitch jack

Line Fuse: T8A, 250V (100 & 120 volt units)

A/C Line Receptacle zZounds is an authorized dealer of SWR products.

Dimensions (W x H x D): 19 x 3.5 x 13.5 in.(2 rack spaces)

Weight: 25 lbs.

Power Output
400 Watts @ 4 ohms
250 Watts @ 8 ohms
(minimum load = 4 ohms)

Suggested Speaker Enclosures
*SWR WorkingPro 4x10
*SWR Goliath III 4x10
*(1) SWR WorkingPro 4x10 & (1) SWR WorkingPro 1x15
*(1) SWR Goliath III 4x10 & (1) SWR Son Of Bertha 1x15
*(1) SWR WorkingPro 4x10 & (1) SWR WorkingPro 2x10
*(1) SWR Goliath III 4x10 & (1) SWR Goliath Junior III 2x10 (8 ohms)

Dimensions and Weight in Packaging: Shipping Weight: 29 lbs; Shipping Dimensions: 21 x 18 x 8 in

Owner's Manual

SWR Warranty

SWR Warranty

If you have additional warranty questions, please call the manufacturer at 818-253-4797

zZounds is an
authorized SWR dealer

Our extended 30-Day 100% Satisfaction Guarantee applies on this product. Buy it, and if it isn't just right for you, return it!

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What Our Customers Are Saying About zZounds "The zZounds payment plan is essential for working musicians on a tight budget―and every working musician is on a tight budget." - customer on February 3rd, 2012

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$649.99

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List: $949.99

Savings: $300.00 (32%)

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2 Day Shipping $32.99Overnight $66.99

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Customer Reviews

4.5 out of 5 (14 ratings) Rate and Review This Product

Read 1 SWR WorkingPro 400 Bass Amplifier Head (400 Watts) Review

"Your local music store will help you make a decision once you try this amp compared to your existing rig."

Sound: The sound is excellent - growl, depth, bass, mids, and highs! Feature: The Aural Enhancer and the Bass Intensifier are a plus that makes this 400 watt amp sound like a 700 watt amp! Ease of Use: The variety of knobs for dialing in the sound you want is awesome! Quality: The product is well constructed and attractive in appearance. Value: The price on this amp is very reasonable considering it's quality sound and appearance. Manufacturer Support: No problems yet! Just bought it September 12, 2007. Played two weekend gigs and the rest of the band went nuts! The Wow Factor: The Bass Intensifier and the configurations. Overall: All my other amps and cabinets are ampeg. I paired the SWR 400 with one of my ampeg 410 400 watt 4 ohm cabinets and the sound was great. I actually had more definition on my sound from this head. My ampeg heads are very warm sounding but don't have the definition of the SWR in my opinion.

Style of Music: R & B, FUNK, Jazz, Pop, and Rock.

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Read 1 SWR WorkingPro 400 Bass Amplifier Head (400 Watts) Review

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We'll wait on your money so you don't have to wait for your gear!

When you checkout, just click the Play as you Pay checkbox to indicate which installment plan you wish to use.

Available on
orders $249+

learn more

Need it now but short of cash? All we need is the first payment up front and the rest in easy monthly payments!

Fast approval.: We approve everyone, with very few exceptions, as long as we can verify your identity.
No interest. Ever.: It's just as if you paid the whole amount up front!
No paperwork. Nothing to track.: No application to mail or fax, no bills to pay. We automatically charge the payments to your credit card.

We'll wait on your money so you don't have to wait for your gear!

When you checkout, just click the Play as you Pay checkbox to indicate which installment plan you wish to use.

You don't have to trade service for savings when you shop at zZounds!

We'll beat any price: Really. It's not a problem for us. In fact, we'll thank you for the chance to live up to our lowest price guarantee!
It's fast and easy: Just tell us where you saw the lower price - another website, an email offer, your local store - and we'll send you our lowest price offer in a matter of hours.
Simply click the Seen it for less? link: Next to the item you want, or give us a call at 800-zZounds (800-996-8637).

With zZounds you'll never have to worry that you paid too much.

We'll beat any price: Really. It's not a problem for us. In fact, we'll thank you for the chance to live up to our lowest price guarantee!
It's fast and easy: Just tell us where you saw the lower price - another website, an email offer, your local store - and we'll send you our lowest price offer in a matter of hours.
Simply click the Seen it for less? link: Next to the item you want, or give us a call at 800-zZounds (800-996-8637).

on most orders $49+

Just $2.99 on
smaller orders

Really heavy stuff might cost you a
little more

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Why fight traffic and pushy salesmen when we'll bring your gear straight to your home, free of charge?

zZounds free shipping is really free!: No hidden charges or hassles on returns.
Fast, reliable delivery: We have warehouses on both coasts, so most shipments arrive in 3 days or less.
We don't collect sales tax. Bonus!: Only NJ residents pay tax during checkout.

Available on
orders $249+

learn more

Need it now but short of cash? All we need is the first payment up front and the rest in easy monthly payments!

Fast approval.: We approve everyone, with very few exceptions, as long as we can verify your identity.
No interest. Ever.: It's just as if you paid the whole amount up front!
No paperwork. Nothing to track.: No application to mail or fax, no bills to pay. We automatically charge the payments to your credit card.

We'll wait on your money so you don't have to wait for your gear!

When you checkout, just click the Play as you Pay checkbox to indicate which installment plan you wish to use.

on most orders $49+

Just $2.99 on
smaller orders

Really heavy stuff might cost you a
little more

learn more

Why fight traffic and pushy salesmen when we'll bring your gear straight to your home, free of charge?

zZounds free shipping is really free!: No hidden charges or hassles on returns.
Fast, reliable delivery: We have warehouses on both coasts, so most shipments arrive in 3 days or less.
We don't collect sales tax. Bonus!: Only NJ residents pay tax during checkout.

A guarantee so solid, you never have to worry about price when shopping at zZounds

We'll beat any price: Simply click the Seen it for less? link next to the gear you want or call us at 800-zZounds (800-996-8637)
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Find a better price after buying from us?: No problem. We'll refund you the difference for 30 days, so you'll never regret buying from zZounds.

You'll still get the trustworthy service you've come to expect from zZounds, without paying more for your gear!