Ampeg SVT-3PRO 450-Watt Tube Preamp Bass Head

Professional Bass Amp Head with Tube Preamp and 1/4" and Speakon Outputs
Ampeg SVT-3PRO 450-Watt Tube Preamp Bass Head image 1
Ampeg SVT-3PRO 450-Watt Tube Preamp Bass Head image 1
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Ampeg SVT-3PRO 450-Watt Tube Preamp Bass Head
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True SVT tone!

The SVT-3PRO is a lightweight bass head with many of the same features of the SVT-4PRO. Both models are loaded with three 12AX7 tubes in the preamp stage with the SVT-3PRO adding another 12AX7 and a 12AU7 for additional drive. The SVT-3PRO's frequency control allows you to select the center frequency for the midrange control, giving you a choice of five distinct voices for the midrange. The center frequencies are 220Hz, 450Hz, 800Hz, 1.6kHz, and 3kHz. And if that's not enough, you can use the 9-band graphic EQ to custom-tailor your sound even more. Or, you can use the EQ to set up a footswitchable second channel for your show-stopping bass solo.

Ampeg SVT-3PRO Features:
  • Tube drive control
  • 1/4" and Neutrik speakON outputs
  • Input peak LED
  • Input pad and bright switch
  • Mute switch and tuner out
  • 3 x 12AX7 preamp tubes
  • 1 x 12AX7 and 1 x 12AU7 driver tubes
  • Solid-state power amp
  • 3-band tone control
  • 5-position midrange control
  • 9-band graphic EQ
The Ampeg SVT-3PRO - classic tone in a rackmountable package!

Additional Media

Bass Guitar Amp Buying Guide
SVT-3PRO 450-Watt Tube Preamp Bass Head User Manual
Ampeg Arrives!

Tech Specs

Type Hybrid
Number of Channels 1
Total Power 450W
EQ 3-band (5-position Midrange), 9-band Graphic
Preamp Tubes 3 x 12AX7
Inputs 1 x Instrument, 1 x Power Amp
Outputs 1 x speakON, 2 x 1/4" (Speaker), 1 x XLR, 1 x TRS, 1 x Preamp
Footswitch I/O Yes
Effects Loop Yes
Height 3.5"
Width 19"
Depth 15.5"
Weight 26 lbs.
Manufacturer Part Number 2039929-00

Customer Reviews

Based on 10 reviews
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No substitute!

I owned the 1st series of this Amp that I bought in the 90's. It finally gave up the power supply, and parts are no longer available for it. So I used something else since I didn't have the $ to replace it. Finally, my Sweetwater rep, Ed Nystrom let me know about a "B" stock that was available, and I got it. Had a bad hiss out of the box. Tech support over nighted a couple of new tubes, I popped them in, and voila, I am back in business with the best bass sound I have ever had. I really had missed my ampeg, and especially the compliments I was accustomed to receiving about my superior bass sound. Once again, Ed and Sweetwater came through for me. I didn't even have to ask for the overnight delivery. My SWR Goliath III is pumping again! There simply is no substitute for quality, and it has the Sweetwater 2yr warranty!
Music background: Bass player, piano, sound engineer

The best of the best!

First of all, many users complain that this amp had not enough headroom - volume and it's a very weak amp. Well, I'm here to tell you otherwise :-)! I've been playing bass since 1998 and this is by far the best amp I've every owned. I used an Ampeg B4R and HK Quantum 600 but they don't even come close to this beast. But, before we go any further, this amp only works with great gear. I use this amp with an Ampeg SVT 610 HLF cabinet, a Boss ME50B and Ampeg SCR DI pedal combined with a Spector Euro 6 LX Bass and Mayones Slogan 6 L Bassguitar and with the -15db pressed in, I will never bring the gain higher then 9 o clock and the master at 11 o clock, tube voltage at 14 o clock and the EQ at 50 % level. Because your ears will bleed ;-). The sound is amazing, from deep beefy lows to cristal clear slapping, this amp does it all. You need some time to figure this amp out, at first you might be dissapointed by the sound but after a few hours of testing, tweaking, experimenting,... you will get the sound that you need and you are on your way. This amp has endured ten years of gigging, recording, rehearsing and has never let me down. Ok, two times tube change in ten years but that's about it. And the best of all, at every rehearsel and gig they tell me to "TURN IT DOWN" ;-). In other words, let your ears be your guide and this amp will rule them all!! And I also did a test, this baby runs 450 watts at 4 ohm's without any problem!
Music background: Music theory school for three years (classical)

Best Bass Amp

I got this amp in along with the new Ampeg Heritage410 and I'm blown away. Best sound I've ever heard for bass and its definitley proffesional quality. Great service here to with my sales rep. Thanks for a amazing amp.
Music background: Praise and worship Bass player

Ampeg SVT-3PRO - classic Ampeg sound without the sore back

Back in the late 70's I had an SVT with the old "fridge" 8X10 cab and found that now I missed that "Ampeg" sound. Sweetwater hooked me up with the SVT-3PRO. I put this on an SVT410HLF cab and WOW! It's the 70's again without the sore back from weightlifting the old rig. The range of tonal control is amazing. The tube gain control really let's you shape the tube preamp response. The "ultra-hi and lo" switches make dramatic shifts in tone at the push of the button and the EQ is superb. I play 5 string bass and my "B" string has never sounded so good. My guitar players both use Marshall half stacks and this rig has no problem keeping up. My Hartke 3500 just became my backup head, but I don't think I'll need it.
Music background: 45 year Rock Musician

Solid kickin sound

Excellent bass head great features for my reggae career, on the road in studio anywhere its awesome. bless!
Music background: Bass/Drum/studio

Sweetwater Advice

Jared Kalish

If you're a bass player who’s looking for the classic Ampeg tone, look no further. Having three 12AX7 tubes in the preamp section really helps bring out the warmth and depth of your bass. You can even drive the tubes to your liking with the Tube Gain knob. One of my favorite features of this head is the amazing EQ section. You're able to really dial in the sound you're looking for and then go over to the 9-band graphic EQ and tweak the exact frequencies you want. Simply amazing!
See also: Bass Amp Heads, Ampeg, Ampeg Bass Guitar Amp Heads