Product images are provided for reference and may not represent the exact model, configuration, or included components.

At A Glance

Output Power Rating
600 Watts RMS @8 Ω, 5% THD | 1000 Watts RMS @4 Ω, 5% THD
Signal to Noise Ratio
72 dB (20 Hz-20 kHz, unweighted)
Maximum Gain
72 dB, tone controls centered
Bass
+12/-12 dB @ 40 Hz
Midrange
+10/-20 dB @ 220 Hz, 450 Hz, 800 Hz, 1.6 kHz, or 3 kHz
Treble
+15/-20 dB @ 4 kHz
Power Requirements
~100-120V AC, 50-60 Hz, 1050 W | ~200-240V AC, 50-60 Hz, 1050 W
Size (H x W x D
4.0 in/102 mm (with feet) x 15.6 in/396 mm x 11.5 in/292 mm
Weight
15.5 lb/7.03 kg (approximately)
Original Sale Price
$1,119.99
Preamp Tube
JJ 12AX7
Power Section
Class-D
Onboard Compressor
Variable
Effects Loop
Remote switching

Neck & Fit Visuals

Fretboard radius, neck profile, and fitment visualizations land here as the B11 spec engine rolls out.

Description

Ampeg positioned the SVT-7PRO within the PRO Series line of bass amplifier heads. The design combined a tube preamp stage with a Class-D power section, delivering 1000 watts into 4 ohms in a chassis weighing approximately 15.5 lb.

The preamp section was built around a JJ 12AX7 tube. Tone shaping included bass and treble shelving controls alongside a 5-position midrange control selectable at 220 Hz, 450 Hz, 800 Hz, 1.6 kHz, or 3 kHz. An onboard variable compressor and a remote-switching effects loop rounded out the feature set. The unit accepts mains voltages of 100–120V or 200–240V AC at 50–60 Hz, drawing 1050 W from the supply. At its rated output the amplifier delivers 600 W RMS into 8 ohms or 1000 W RMS into 4 ohms, both at 5% THD. Signal-to-noise ratio is specified at 72 dB unweighted over 20 Hz–20 kHz, with a maximum gain of 72 dB at centered tone controls. The enclosure measures 4.0 in high (with feet) × 15.6 in wide × 11.5 in deep.

Owners seeking servicing, tube replacement, or cabinet-pairing guidance should consult a qualified amplifier technician familiar with bass amplification.

Specifications
Output Power Rating: 600 Watts RMS @8 Ω, 5% THD | 1000 Watts RMS @4 Ω, 5% THD
Signal to Noise Ratio: 72 dB (20 Hz-20 kHz, unweighted)
Maximum Gain: 72 dB, tone controls centered
Bass: +12/-12 dB @ 40 Hz
Midrange: +10/-20 dB @ 220 Hz, 450 Hz, 800 Hz, 1.6 kHz, or 3 kHz
Treble: +15/-20 dB @ 4 kHz
Power Requirements: ~100-120V AC, 50-60 Hz, 1050 W | ~200-240V AC, 50-60 Hz, 1050 W
Size (H x W x D: 4.0 in/102 mm (with feet) x 15.6 in/396 mm x 11.5 in/292 mm
Weight: 15.5 lb/7.03 kg (approximately)
Original Sale Price: $1,119.99
Preamp Tube: JJ 12AX7
Power Section: Class-D
Onboard Compressor: Variable
Effects Loop: Remote switching
Q&A
Have Questions?

Ampeg SVT-7PRO-U SVT Pro All-Tube Bass Amplifier Head, 1000W

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