Ampeg SVT-4PRO

Pro Bass Head

  • Head for Electric Bass
  • Pro Series
  • Preamp 3x 12AX7 tubes
  • MOSFET Power amplifier
  • Power 2x 300 W at 8 Ohm (900W mono-bridged)
  • Power 2x 490 W at 4 Ohm (1200W mono-bridged)
  • Power 2x 600W at 2 Ohm
  • 9-Band graphic EQ
  • 3-Band tone control
  • Input peak LED
  • 2x Jack inputs
  • -15 dB Pad
  • Integrated compression
  • Bright switch
  • Internal 24 dB/Octave crossover
  • Linkwitz-Riley state variable filters
  • High/Low balance control
  • Tuner output
  • Mute function
  • Bi-amping high and low jack outputs
  • 2x Preamp-Out
  • 2x Balanced Line-Out
  • 2 Effect loops
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Sound samples

  • Fretless Direct
  • Fretless Speaker
  • Jazz Direct
  • Jazz Speaker
  • Slapping Direct
  • Slapping Speaker
  • Rock Direct
  • Rock Speaker
  • Show more

Further information

Power 980 W
Equalizer 3-Band, 9-Band
Compressor Yes
Limiter Yes
Effects unit No
External Effect Loop Yes
Connector for external speakers Jack, Speakon
Headphone connection No
Di Output Yes
Tuner Output Yes
Rack mount Yes

This product is currently sold out

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17 customer ratings:
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4.5 / 5.0
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  • sound
  • quality
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Should we still make the lodge?

Christia, 16.07.2011
The ampeg ... used in so many bands and so many styles ...
I use it mainly to play metal, or it perfectly fulfills its role coupled to a 410 hlf and a corvette $$ bk.
I never had to complain about its power that already seems unlimited with a cab on two in stereo.
Small flat anyway to the complexity of the settings with the graphic eq, and the sotie xlr back which works only once in 10 (can be a mass problem on my head).
So warmly recommended if you are looking for ampeg sound and you are not afraid of long settings (otherwise it is ampeg svt CL).
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Powerful - powerful sound

Guido aus R., 09.11.2009
I had already played the amp live here and there and was positively impressed, now that I've been playing it myself for some time, this positive impression is still confirmed.

The amp sounds like an ampeg should sound - punchy, warm and precise. The quasi-parametric control with the 5-way selector together with the treble and bass controls is already very effective. If you add the ultra-high, ultra-low and bright switches, the result is unimagined sound variations. And then the graphical EQ. Admittedly - you can also set bad sounds, but this is not a problem of the amp but the operation. Recommended for the start: Ampeg has suggested in the manual half a dozen different sound settings. If you try it and take the personal best as a clue to continue experimenting from there you will surely find 'his' sound quickly.

I personally play the amp in dual-mono mode with 2 4 ohm boxes. The performance is absolutely convincing. Gain - regulator adjusted correctly - Master at 11 o'clock - that is most then already too loud (me not ;-)). The Amp is thus powerful but still not long in the end - in contrast to many other amps, there is still continuous power up to the stop of the master. He is definitely going to play on all the stages. And that completely without any strain.

Further for me very positive:

- the mute switch in conjunction with the tuner-out, which allows easy, silent voices between the pieces.

- the built-in 'wet' DI box, with which you can finally give the sound of the amp to the mixer without long discussion that you would have a micro instead of the upstream DI box would like.

For me, the only negative point: The Potis, especially the Poti buttons. Works quite cheap and egg turning. In addition, the stroke on the buttons is difficult to read depending on the light, which is not helpful on some stages when setting. However, the amp is well processed.
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Though there are other options, the stack remains a rock icon, and is still the most flexible form of guitar amplification.
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Guitar Amp Heads
Though there are other options, the stack remains a rock icon, and is still the most flexible form of guitar amp­li­fic­a­tion.
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