Ampeg

collapse expand iconDescription

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.
Open Box Ampeg SVT-4 PRO Series Bass Head Level 1
Open Box Ampeg SVT-4 PRO Series Bass Head Level 1
Open Box Ampeg SVT-4 PRO Series Bass Head Level 1

collapse expand iconFeatures

  • 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
  • Input peak LED

collapse expand iconSpecs

  • Dimensions: 19 x 5.25 x 15.5 in.
  • Weight: 42 lbs.

Featured Articles

collapse expand iconReviews

4.5

20 Reviews

100%

of respondents would recommend this to a friend

Most Liked Positive Review

5

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) 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

2

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 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.

Filters
Best Uses
  1. Performances5
  2. Home Studio4
  3. Outdoor Events / Games4
  4. Professional Recording2
  5. Amateur Recording1
Describe Yourself
  1. Experienced4
  2. Professional Musician2
Pros
  1. Easy To Use6
  2. Excellent Sound6
  3. Good Power Output5
  4. Warm / Comfy4
  5. Portable3
  • The deep,fat,punchy and clear sound of bass are awesome!

    3

    Verified BuyerVerified Buyer

    submitted2 years ago

    byNathan

    fromOrlando Fl

    Submitted as part of a sweepstakes

    Currently I use this equipment for medium size church worship settings and smaller gatherings between 30-40 people. I also use this for Practicing at my residence. I am impressed with the superior quality and craftsmanship.

  • I own two: An honest 4Pro story

    4

    submitted5 years ago

    byAVM 123

    fromGeorgia

    I purchased my first 4Pro new from GC around 2015, a made in Vietnam model. It died within 2 weeks. It suddenly made almost no sound as soon as I powered it up. You could hear it, but barely. Of course, GC was great and shot me a new one asap. Knowing what I know now, it probably suffered from tube failure, possibly caused by me. I can't fault Ampeg for this. Most tubes are made in China or Slavic countries and are simply not as good as they once were. After this, I made sure that every time I shut off the amp, I turned down the gain and the master, so that when it powered up, there was no load on the amp, no POP on start-up. I now always let it warm up 5 minutes (something you should always do with any tubes to prevent damage), before I start playing. Since then I've never had a problem with this amp. I use this exclusively for practice. This warm up/ start up system should be stated in the manual. It's always a rule that you warm everything up before you crank on the main amps. My second 4Pro is American made and I purchased it used third party already rack mounted in an SKB case with a Furman power conditioner. I test drove it one cold morning for about twenty minutes and it was in excellent condition. However, once I started using it at gigs, it suffered from overheating shut down due to being rack mounted without proper ventilation. It turns out that the cooling fan was damaged from being over worked and had to be replaced (now I know why they sold it). SInce then, and some customization to the SKB case, I haven't had a single problem, gigging once a week, on for 3hrs solid at a time. I run this one through a 410 and a 410 HLF stack. As for tone, after about 3000 practice hours, it was time to change the tubes. I purchased NOS vintage american made tubes and dropped them in and OH MY GOD! The heavens opened. I got misty playing for the first time. That elusive tone I've been chasing all these years was coming forth from my bass.

  • There are so many possibilities here!

    5

    submitted5 years ago

    byBob

    fromHouston TX

    I have other Ampeg Amps but this thing has endless possibilities. I can't stop exploring all the options.

  • KILLER HEAD FOR ANY SOUND AND AMOUNT OF POWER!

    5

    submitted8 years ago

    byDreadlandbassist

    fromDallas, Texas

    This amp is absolutely amazing! I have had mine for 6 years the only thing I have had to replace is the power switch. The amp does run hot but the amount of power I can get from this guy is insane! it definitely blows any other amp out of the water that I have played in both sound dynamic and Power highly suggest if you play with a loud band and need to cut through. the tone options are great and you can dial in your own signature tone very easily using the 9 band EQ along with the mid selector switch. I have played many gigs with it and have rarely had issues (Which were only due to poor electrical wiring in some of the lower end venues) and i use this guy daily! For metal, rock, blues, etc... this thing can do it all!

  • Yes absolutely I will definitely I love it you qualify Gear

    5

    Verified BuyerVerified Buyer

    submitted8 years ago

    byEbenezer production

    fromNc

    Love it great product I highly recommend If you want quality sound. You have to get one high power amp handles exactly what I was looking for

  • I would buy this amp all day long.

    5

    submitted8 years ago

    byDamian

    fromSanta Fe, TX

    Do not hesitate, do not procrastinate. Buy this amp!

collapse expand iconQ&A

Have a question about this product? Our expert Gear Advisers have the answers.

  • asked byO. L.

    fromBeaumont, Texas

    Have The Guitar Center received any Ampeg SVT-4 Pro 1200watt Bass Amp in stock. Also have you any 3u rack mount cases with side vents on both sides????

    Have The Guitar Center received any Ampeg SVT-4 Pro 1200watt Bass Amp in stock. Also have you any 3u rack mount cases with side vents on both sides????

    Open Reply - Thomas
    Please give us a call for product availability 855-770-3373
  • asked byWayne

    fromLoxley, AL.

    What exactly does "open box" mean ?  and why the price difference ?

    What exactly does "open box" mean ? and why the price difference ?

    Open Reply - Thomas
    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 Includes 2-Year Free Warranty on all guitars and basses Gold coverage plan available for 1 or 2 years coverage. The price difference is because it's not brand new