
AMPEG SVT-4PRO Bass Head
- North Island $10 · South Island $15. See delivery details
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In the world of high-performance bass amps, Ampeg’s SVT amplifiers are in a class by themselves. In true Ampeg tradition, the SVT-4 PRO offers you more power, performance and flexibility than any other bass amplifier in its class.
SVT-4PRO offers an expansive palette of tonal options. The Frequency control allows you to select the center frequency for the Midrange control, giving you five distinct voicing options for the Midrange. And if that’s not enough, you can use the 9-Band Graphic EQ to fine-tune your sound—or use it to set up a footswitchable “second channel” with a volume boost for your bass solo.
SVT-4PRO is designed for the player who wants SVT tone and performance (with a few modern enhancements) in a convenient, high-powered, rackmount design. With a huge diverse group of artist endorsements, including Tony Levin (Peter Gabriel/King Crimson), Cliff Williams (AC/DC), Pablo Stennett (Ziggy Marley) and far too many others to list here, the SVT-4PRO is a clear favorite among professionals. In the world of high performance bass amps, the Ampeg SVT-4PRO has what it takes to really define your sound.
- 1/4" and Neutrik Speakon® Outputs
- Input Peak LED
- Defeatable Optocoupler Limiters
- Variable Internal 24 dB/Octave Crossover
- Variable 0 - 7:1 Compressor
RMS Power Output: 300-Watts x 2/900 (mono-bridged @ 8 Ohms)
RMS Power Output: 490-Watts x 2/1200 (mono-bridged @ 4 Ohms)
RMS Power Output (2 Ohms): 600-Watts x 2
Preamp: Tubes (3 x 12AX7)
Power Amp: Solid State
Tone Controls: 3-Band
Mid Tone Control: 5-Position
Graphic EQ: Yes, 9-Band
Ultra Low/High Boosts: Yes
Balanced Line Out: Yes x 2 Pre/Post with Level
Effects Loop: Yes x 2
Preamp Out/Power Amp In: Yes x 2
Dimensions (W x H x D inches): 19 x 5.6 x 15.5
Weight: 39.5 Pounds
Product specifications will appear here when available.
North Island $10, South Island $15 — standard delivery takes 1–3 business days (rural addresses add approximately 2 business days). Full delivery policy
We don't offer change-of-mind returns. If an item arrives faulty, contact us first and we'll guide you through assessment and return — your rights under the Consumer Guarantees Act are unaffected. Full returns policy
No reviews yet.
Details

In the world of high-performance bass amps, Ampeg’s SVT amplifiers are in a class by themselves. In true Ampeg tradition, the SVT-4 PRO offers you more power, performance and flexibility than any other bass amplifier in its class.
SVT-4PRO offers an expansive palette of tonal options. The Frequency control allows you to select the center frequency for the Midrange control, giving you five distinct voicing options for the Midrange. And if that’s not enough, you can use the 9-Band Graphic EQ to fine-tune your sound—or use it to set up a footswitchable “second channel” with a volume boost for your bass solo.
SVT-4PRO is designed for the player who wants SVT tone and performance (with a few modern enhancements) in a convenient, high-powered, rackmount design. With a huge diverse group of artist endorsements, including Tony Levin (Peter Gabriel/King Crimson), Cliff Williams (AC/DC), Pablo Stennett (Ziggy Marley) and far too many others to list here, the SVT-4PRO is a clear favorite among professionals. In the world of high performance bass amps, the Ampeg SVT-4PRO has what it takes to really define your sound.
- 1/4" and Neutrik Speakon® Outputs
- Input Peak LED
- Defeatable Optocoupler Limiters
- Variable Internal 24 dB/Octave Crossover
- Variable 0 - 7:1 Compressor
RMS Power Output: 300-Watts x 2/900 (mono-bridged @ 8 Ohms)
RMS Power Output: 490-Watts x 2/1200 (mono-bridged @ 4 Ohms)
RMS Power Output (2 Ohms): 600-Watts x 2
Preamp: Tubes (3 x 12AX7)
Power Amp: Solid State
Tone Controls: 3-Band
Mid Tone Control: 5-Position
Graphic EQ: Yes, 9-Band
Ultra Low/High Boosts: Yes
Balanced Line Out: Yes x 2 Pre/Post with Level
Effects Loop: Yes x 2
Preamp Out/Power Amp In: Yes x 2
Dimensions (W x H x D inches): 19 x 5.6 x 15.5
Weight: 39.5 Pounds
Specifications
Product specifications will appear here when available.
Shipping & Returns
North Island $10, South Island $15 — standard delivery takes 1–3 business days (rural addresses add approximately 2 business days). Full delivery policy
We don't offer change-of-mind returns. If an item arrives faulty, contact us first and we'll guide you through assessment and return — your rights under the Consumer Guarantees Act are unaffected. Full returns policy
Reviews
No reviews yet.




