Ampeg SCRAMBLER-U
Ampeg SCRAMBLER-U
Ampeg SCRAMBLER-U
Ampeg SCRAMBLER-U
Ampeg SCRAMBLER-U Bass Overdrive Pedal
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At A Glance

Signal to Noise Ratio
>85 dB (50 Hz @ 300mV RMS)
Maximum Gain
+18 dB
Tone Controls
Treble:+17/-14 dB @ 4 kHz
Impedances
Input: 1 MΩ @ NORMAL, 83 kΩ w/-15 dB PAD | Output: 120 Ω
Power Requirements
Internal: 9V Battery | External: 9V DC, >20mA, center negative
Size (H x W x D
2.2 in x 2.6 in x 4.5 in | 56 mm x 66 mm x 114 mm
Weight
0.6 lb / 0.3 kg (approximately)
Signal Type
Analog
Effect Type
Bass Overdrive
Description

Ampeg produced the Scrambler-U as a compact bass overdrive pedal in its effects lineup. The unit was designed to deliver what Ampeg described as overdrive ranging from subtle to heavy, with a dry signal blend control allowing the player to mix effected and clean signals together.

The Scrambler-U ran on fully analog circuitry. It accepted a 9V battery internally or an external 9V DC center-negative supply drawing more than 20 mA. Input impedance was 1 MΩ at the normal input, dropping to 83 kΩ when the -15 dB pad was engaged, and output impedance was 120 Ω. Maximum gain was +18 dB, with a signal-to-noise ratio greater than 85 dB measured at 50 Hz with a 300 mV RMS input. The treble control offered a range of +17 to -14 dB at 4 kHz. The enclosure measured 2.2 × 2.6 × 4.5 inches (56 × 66 × 114 mm) and weighed approximately 0.6 lb (0.3 kg).

Owners sourcing a replacement power supply should confirm the center-negative polarity and a minimum 20 mA current rating before use; a guitar technician can assist with any signal-chain or power-related troubleshooting.

Expert Analysis
Specifications
Signal to Noise Ratio: >85 dB (50 Hz @ 300mV RMS)
Maximum Gain: +18 dB
Tone Controls: Treble:+17/-14 dB @ 4 kHz
Impedances: Input: 1 MΩ @ NORMAL, 83 kΩ w/-15 dB PAD | Output: 120 Ω
Power Requirements: Internal: 9V Battery | External: 9V DC, >20mA, center negative
Size (H x W x D: 2.2 in x 2.6 in x 4.5 in | 56 mm x 66 mm x 114 mm
Weight: 0.6 lb / 0.3 kg (approximately)
Signal Type: Analog
Effect Type: Bass Overdrive
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Ampeg SCRAMBLER-U Bass Overdrive Pedal

$139.99
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