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Ampeg SVT-4 PRO Series Bass Head  

Item #: 
1274115028071
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The Ampeg SVT-4 PRO Series Bass Head is a true hybrid that features a 3-tube preamp, a MOSFET power amp that delivers 1,200W @ 4 ohms (2x600W), tone-shaping tools, and all the pro features you'll ever... Click To Read More About This Product

IN STOCK & READY TO SHIP

Gear returned in mint condition. If you're looking for a virtually new instrument in possibly less-than-perfect packaging, this is a great value.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
Gear returned in great condition, with only minor signs of use, such as slight scuffs or pick marks. It looks and plays like new and may be considered an equivalent to display units found in retail stores.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
Price:
$1,54999.00
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Ship to Store Available in: 3-7 Days (estimated) Denver, CO (5.5  mi) View More Stores For Availability


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Overview

The Ampeg SVT-4 PRO Series Bass Head is a true hybrid that features a 3-tube preamp, a MOSFET power amp that delivers 1,200W @ 4 ohms (2x600W), tone-shaping tools, and all the pro features you'll ever need. 3 tone controls, 5-position mid switch, 9-band graphic EQ, and ultralow/high boosts. Also features a defeatable optocoupler limiter, variable 0-7:1 compressor, internal 24dB/octave crossover, 50Hz-1kHz crossover point, high/low balance control, tuner out/mute function, 1/4" biamp outputs, 2 balanced line outs with transformers, 2 effects loops, and 2 preamp out/power amp ins. Classic SVT tone and contemporary reliability. 3U rackmount.

Features
  • 1200 watts @ 4 Ohms (2x600W)
  • 3 x 12AX7 preamp tubes
  • 3-band EQ
  • 9-band graphic EQ 5-position mid tone control
  • Ultra low and ultra high boost switches
  • 2 balanced line outputs 2 effects loops
  • 1/4" and Neutrik Speakon outputs
Specifications
  • Dimensions: 19 x 5.25 x 15.5 in.
    Weight: 42 lbs.
Warranty
MANUFACTURER'S WARRANTY
On May 1st, 2009, the Mackie, TAPCO, Crate, Blackheart and Ampeg websites will be updated with the addition of warranty URLs (e.g. www.mackie.com/warranty) expressing new A Stock warranty terms. These warranty URLs will go live on May 1st, 2009. Formerly, warranty periods for these LOUD brands appeared in a variety of locations – in product manuals (for Mackie and TAPCO) and on warranty cards and hang tags (for Crate, Blackheart and Ampeg). In order to streamline and clarify this process, Mackie, TAPCO, Crate, Blackheart and Ampeg warranty periods and terms will be communicated in full on the warranty pages. Any LOUD products purchased prior to May 1st will bear with them the manufacturer’s warranty as predates the new policy. Moving through this transition, in order for customers to obtain warranty service, both the sales receipt and a physical copy of the (older) warranty statement will be required by our Service and Support departments in order to issue Service Requests, etc. If the product was purchased on or after May 1st, 2009, but a physical copy of the older warranty terms is not presented, the new warranty terms and periods will apply. Meanwhile, the products that bear with them the new warranty periods (as reflected in the box contents of each product) are being tracked by serial #, and contain new warranty content referring customers to the appropriate brand website. The information below reflects the product warranty periods that will be effective on May 1st, 2009 for the Mackie, TAPCO, Crate, Blackheart and Ampeg brands: Mackie: A 3-year, nontransferable, inclusive warranty on electronics and a 2-year, nontransferable, inclusive warranty on drivers (where applicable) apply to loudspeakers (active and passive), power amps, powered mixers, and HR studio monitors. Specific models under this warranty include all SRM, HD, SA, C and S Series Speakers, all FRS Amplifiers, all HRmk2 Studio Monitors. A 1-year, all inclusive, nontransferable warranty applies to all mixers, MR Studio Monitors, Control Surfaces, Processors (digital), MR Studio Monitors, Control Surfaces, Audio/MIDI Interfaces, other SR & Recording Products. Specific product models under this warranty include all Onyx Compact, 4-bus and 8-bus, all VLZ3, all PPM, all ProFX, all CFXmk2 Mixers, all MR Studio Monitors, Big Knob, Onyx 800R, all MCU Pro family. Tapco: A 1-year, all inclusive, nontransferable warranty applies to all products and all models. Crate: A 1-year, nontransferable warranty applies to electronics and speakers on all models of MI amps, cabinets, and combos. 90-day warranty on all tubes Blackheart: A 1-year, nontransferable warranty applies to electronics and speakers on all models of MI amps, cabinets, and combos. 90-day warranty on tubes. Ampeg: A 5-year, nontransferable warranty on electronics and a 2-year, nontransferable warranty on speakers apply to all SVT Classic and Pro Series, MI amps and cabinets. A 2-year, nontransferable warranty on electronics and a 2-year, nontransferable warranty on speakers apply to all B Series, all Diamond Blue, and all BA combo amps. 90-day warranty on tubes.


GUITAR CENTER'S PRO COVERAGE
Pro Coverage gives you added warranty protection for your new gear. Stepping in where the manufacturer's "normal wear and tear" coverage ends, our Pro Coverage program offers you upgraded coverage if your product ever fails Read More.

Pro Coverage includes
  • Accidental damage protection (new gear only)
  • Expedited repair
  • Free shipping (for returns or repairs)
  • 100% coverage for commercial use
  • Extended return period
  • Extended price protection
  • No lemon guarantee
  • Free transfer of coverage to a new owner
  • Repair costs covered for up to three years from date of purchase
  • Repair authorization-toll-free by phone or via the web
  • Customer Reviews
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Review Snapshot

by PowerReviews
AmpegSVT-4 PRO Series Bass Head
 
4.6

(based on 16 reviews)

Ratings Distribution

  • 5 Stars

     

    (13)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (0)

Pros

  • Easy to use (3)
  • Excellent sound (3)

Cons

No Cons

Best Uses

No Best Uses

Most Liked Positive Review

 

Yep! This is It!

I recently "upgraded" from the SVT3Pro to the SVT4Pro and, after initial usuage, I am extremely pleased! Took it to practice (We play regularly 4-5 nights a week)...Read complete review

I recently "upgraded" from the SVT3Pro to the SVT4Pro and, after initial usuage, I am extremely pleased! Took it to practice (We play regularly 4-5 nights a week) I told both guitarist that if they continue to try to run me off the stage - I would make their ears bleed and gave them a demonstration. Problem solved. I agree with most other reviewers that it is IMPERATIVE that you choose a cab that can handle the amount of power the SVT4Pro puts out! I am currently using a SVT6X10HLF and it handles the power like a dream! I would suggest either the PR4X10, SVT6X10HLF, or the SVT8X10. Any of these will serve you fine. Unfortunately, I cannot give much of an "in-depth" review, (just got it), but, if it performs as well as it's "little Brother" the SVT3Pro, I will be a happy camper!

VS

Most Liked Negative Review

 

Ventilation problems

Great Amp, except for ventilation problems, why would they put ventilation on the sides is beyond me, must have been a Friday afternoon decision around 4pm. If you buy this amp, invest...Read complete review

Great Amp, except for ventilation problems, why would they put ventilation on the sides is beyond me, must have been a Friday afternoon decision around 4pm. If you buy this amp, invest in rack amp fans, and a hole saw, drill two holes in the side of your road case so they line up with the sides of the amp, two holes on each side of the road case. These amps get hot, if they get too hot, they turn off. You need killer ventilation for these amps, other then that, their awesome.

Reviewed by 16 customers

Displaying reviews 1-10

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(25 of 28 customers found this review helpful)

 
5.0

Yep! This is It!

By Zippy

from MidWest

Comments about Ampeg SVT-4 PRO Series Bass Head:

I recently "upgraded" from the SVT3Pro to the SVT4Pro and, after initial usuage, I am extremely pleased! Took it to practice (We play regularly 4-5 nights a week) I told both guitarist that if they continue to try to run me off the stage - I would make their ears bleed and gave them a demonstration. Problem solved. I agree with most other reviewers that it is IMPERATIVE that you choose a cab that can handle the amount of power the SVT4Pro puts out! I am currently using a SVT6X10HLF and it handles the power like a dream! I would suggest either the PR4X10, SVT6X10HLF, or the SVT8X10. Any of these will serve you fine. Unfortunately, I cannot give much of an "in-depth" review, (just got it), but, if it performs as well as it's "little Brother" the SVT3Pro, I will be a happy camper!

(13 of 15 customers found this review helpful)

 
5.0

You'll lose your head!

By SquintLee

from Rosamond, CA

Comments about Ampeg SVT-4 PRO Series Bass Head:

Simply put, the Ampeg SVT-4 PRO Series Bass Head makes a musicians life easier. With a built in equalizer to receive maximum tone, I can create my own customized sound without having to buy a pedal. Being able to switch from low end to high end helps when I switch from finger play to slap and pop. The mid frequency changer really helps with my melodic tunage giving me slight varience of tone. Literally, one flick of a switch can make all the difference in the sound of this beast of an amp head. I LOVE IT!

(12 of 12 customers found this review helpful)

 
5.0

Crank It Up

By rbonner

from SIoux Falls, SD

Comments about Ampeg SVT-4 PRO Series Bass Head:

I currently own four of these amplifiers and power 4 SVT-810E cabs. Soon to be adding additional cabs and AMPS to my rig. This amp is a great device and does everything I ask of it, but I will warn you it vents the hot air out the side of the case. In the manual AMPEG suggests 3" to the side, this is not practical. When I bought my first head I installed it in a SMB Roto case, great case but not for a 4PRO. The case only had about 3/8" clearance at the vents. The side warped right into the outlet vents and blocked them within a couple minutes of playing. I heard the fan go to high. Guys who have a problem with these amps rack them too tightly. A big wood ATA rack will need additional fan cooling. Now my 20U rack has 1" clearance and I have dual rack mount fans blowing air into the bottom of the rack and vent it with another dual fan setup at the top. I do not have issues. Should AMPEG have designed it differently? Well thats not my call, but just know its a fantastic box if you take these cooling steps to heart. BOB

(10 of 11 customers found this review helpful)

 
5.0

You need to buy this thing!!!!

By Michael

from SC

Comments about Ampeg SVT-4 PRO Series Bass Head:

I've played through a lot of bass amps but, Ampeg beats them all. The Ampeg SVT-4PRO is the way to go for any type of music. I can punch in any type of tone from a nice punchy slap tone to a rich SVT-CL tone. I'm financing on this guy within the next couple of months with an Ampeg SVT-810e. Great setup!!!! I was debating between this dude and the classic and four things won me over. 1. It's 1200watts RMS compared to 300watts RMS 2. Built in EQ, Compressor, Limiter, and Cab bypass options 3. When the tubes blow, instead of paying for 11 tubes at $15-20 a piece, I only have to buy 3 and 4. The Classic is like 80 lbs while the 4PRO is something like 38 lbs. I'm sure that people can argue about the classic being all tube, warmer, and 300 tube watts not solid state watts, but the sound out of the 4PRO is monsterous. It's all about tonal opinion when it comes down to it I guess; however, for me, I'm stickin with the Ampeg SVT-4PRO!!!!

(9 of 10 customers found this review helpful)

 
5.0

Power, Punch, and Price

By Rob

from Fort Collins, CO

Comments about Ampeg SVT-4 PRO Series Bass Head:

I recently purchased the Amepg SVT 4 Pro and some other new equipment after trying amp and cab after amp and cab. Ampeg was clearly the winner in the Amp race, and the SVT4Pro blew me away. It has the so much growl and depth of tone like other all tube amps, and from this packs a mean punch. The power section is practicaly unmatched and gives you head room and power that is unimaginable, I just hope my cab survives it. The variety of controls are amazing allowing you to control every aspect of the sound you get. The EQ section can SEEM a little redundant, however setting it up the way they did, one can easily switch between two drastical different tones, A+! All of this wonderful control and power comes at a somewhat high price in dollars, and also in the weight of the amp. But deffinatly well worth it for anything from Jazz, to light rock, to death metal.

(6 of 34 customers found this review helpful)

 
2.0

Disappointment in 4 Pro

By Scodelife8

from Chino, Ca

Comments about Ampeg SVT-4 PRO Series Bass Head:

I heard great things about the SVT3 Pro and thought if the 3 Pro was good I figured the 4 Pro would be better. Boy was I wrong. I own a 350H and never had a problem with it. Then my band started touring more so I decided to get a rack mount head and decided to buy the 4 Pro. The very next weekend I played my first show with it and at the beginning of the second song it died. Thank God for the 5 year warranty. Took it in and had it fixed and took it out on tour again. In the middle of the first song of the first show it died again. Be careful and have a backup head if you buy the 4 Pro.

(6 of 6 customers found this review helpful)

 
4.0

Great sounding head, reliability?

By Sybariticmetal

from Atlanta, GA

Comments about Ampeg SVT-4 PRO Series Bass Head:

Have had mine for 6 yrs now and I still love it. It has so many useful options as to how to connect your cabs but typically I just mono bridge to a 2x15 Bergantino setup. There's plenty of headroom with the 4pro and The EQ is great. I can always dial in a similar tone no matter which bass I'm using or what room I'm playing in. The direct out is quiet, useful, and has worked well for all the venues it's been used in. Two design shortcomings I've found with the 4 pro are that it has no ground lift switch and that the fan vents on the side and not the rear. Why in the world would you have them vent to the side? That being said, I haven't ever had an overheating issue in a standard SKB case. As far as reliability, I'm still on the fence. The preamp board on mine died after 1.5 yrs but it was repaired under warranty at no charge to me. Luckily there was a warranty repair center 4 miles from where I work. Would be much more of a pain if you're not in a major city I imagine. My teacher's 4 Pro also had the same preamp blowout issue at 2 yrs or so and his was also repaired under warranty. I am now having issues with the amp muting randomly. I believe the foot switch mute jack is to blame and will be getting it re-soldered or replaced. My teacher ended up selling his but even with the few issues I've had mine's been reasonably reliable based on number of gigs and playing hours its been used. I probably won't ever sell it.

(4 of 4 customers found this review helpful)

 
5.0

12AX7 and MOSFET power/ Best of both worlds.

By HIGHOKTANE "Progressive Metal"

from New York

Comments about Ampeg SVT-4 PRO Series Bass Head:

Best of both worlds. Three 12AX7 tubes in your pre-amp section provide the legendary SVT classic growl. A MOSFET Power amp gives you 1200 watts rms continuous and 1600 watts peak. EQ lets you dial in whatever tone you want. Pre-sets come in handy from classic growl to modern tones. This is a very powerful, versitile amp that deserves to be plugged into a powerful speaker cab to reap the benefits of all its capabilities. This amp will last a lifetime, but you need to protect your investment. Get an SKB or similiar flight or rack case to protect the amp. You don't want this amp banging around in the back of your pick-up truck. It will require a 3 space or larger rack case. A larger case will provide better ventilation and keep your amp cool. Tube amps are susceptible to damage from moisture or extreme changes in temperature, going from hot to cold and vise versa. If it overheats, give it more air, a small fan works good. I gig all the time and this amp has not let me down. It has never overheated, and mine is inside a 6 space rack case (no external fan). I've taken this amp to the limit and it has never let me down. I've played around with every setting, wiring scenario, and just when I thought this amp was mega loud, I decided to disengage the limiter and tested it to the extreme limit. It performed like a champ and a fighter jet would seem quite next to this amp with the limiter off. Not recommended to turn off limiter, but I had to see for myself. 136+ decibles is nothing for this amp to achieve. Read the wiring diagram carefully. If you wire it wrong, ie. reversing pin 1+= "+", pin 2+= "-" polarity, or using the wrong speaker cab, etc., it may produce some unwanted problems and diminished sound quality. Easiest set-up is to mono-bridge this amp into an 800+ watt 8x10 speaker cab like the SVT 8x10, or two 4x10 in stereo mode using SPEAKON connectors. My amp came with a 3 foot SPEAKON connector wire that had a SPEAKON on one end and a 1/4 inch connector on the other end. The 10:1 built-in compressor is a mild compression. I recommend a dbx 160 rack or a digitech squeezer foot pedal for more comp. The pre-amp only has three tubes, the rest is solid state. For more growl I recommend the digitech distortion pedal. Enjoy your new amp and go knock down some walls.

(2 of 2 customers found this review helpful)

 
5.0

Old School/New School THUNDER

By Professor Clud

from Delano, TN

Comments about Ampeg SVT-4 PRO Series Bass Head:

This is the best gigging amp you can buy. Tube warmth, lots of volume, eq tones galore. You can dial in just about any type of tone you need quickly. With the luxury of all that extra power you don't have to really crank it to be heard. I also use it in my home studio and employ that -15 decibal switch for quieter playing. That old school warmth is definetly there which you can blend in many other tone colors. Sometimes you wish that all your setting could be saved as favorite presets. Other than that both old timers and new timers alike will enjoy all the bass thunder they can make with this amp.

(2 of 2 customers found this review helpful)

 
5.0

this is amazing

By Rudy Garcia

from Canyon Country California

Comments about Ampeg SVT-4 PRO Series Bass Head:

I have had this amp for about a month. I was never able to get that power slinky sound out of my amps until i was introduced to this amp! it is the best investment i have ever made i can go from playing punkska to jazzy stuff. you always get that sound you are always looing for. i use it out of a 6x10 bass cab and i think i have to get a 8x10 just to luse its power. i honestly gareentee it for anyone who cant find that PERFECT SOUND THEY ARE LOOKING FOR!!!!!

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