The Optimal Audio SmartAmp 20 is a 4-channel DSP amplifier in a half-width 1U chassis, with 250W shared between each pair of channels. Supporting both low-impedance and 70/100V line outputs, it is designed for mid-scale commercial installations where four independent speaker zones or a combination of satellite and subwoofer channels are needed. Built-in DSP with Optimal Audio speaker presets handles all processing internally.
Channels
4
Independent channels
Power
250W
Per pair, shared
Form Factor
Half-width 1U
Two fit side-by-side
Output Types
Low-Z + 70/100V
Dual-mode
Ecosystem Integration
The SmartAmp 20 integrates with Optimal Audio Zone controllers, ZonePad wall panels, and the WebApp for complete system configuration and control. Built-in speaker presets for all Optimal Audio loudspeakers eliminate the need for external DSP processing.
Features
✓
4 channels with built-in DSP and Optimal Audio speaker presets
4 channels with built-in DSP and Optimal Audio speaker presets
✓
Supports both low-impedance and 70V/100V distributed line outputs
Supports both low-impedance and 70V/100V distributed line outputs
✓
Half-width 1U chassis — mount two side-by-side in a single rack space
Half-width 1U chassis — mount two side-by-side in a single rack space
✓
250W shared per channel pair for flexible power distribution
250W shared per channel pair for flexible power distribution
✓
PFC power supply for efficient mains power usage
PFC power supply for efficient mains power usage
✓
EuP2103 compliant for low standby power consumption
EuP2103 compliant for low standby power consumption
✓
Works with Optimal Audio Zone controllers, ZonePad, and WebApp
Works with Optimal Audio Zone controllers, ZonePad, and WebApp
✓
UK power supply included (SAMP20UK variant)
UK power supply included (SAMP20UK variant)
Specifications
| Type | DSP amplifier |
| Channels | 4 |
| Power | 250W per pair (shared between channels) |
| Output Modes | Low impedance, 70V, 100V |
| DSP | Built-in with Optimal Audio speaker presets |
| Form Factor | Half-width 1U rack mount |
| Power Supply | PFC, EuP2103 compliant |
| Mains Supply | UK (included) |
| SKU | SAMP20UK |
