Rated 4.9 (79 reviews)
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.
4
Channels · Independent channels
250W
Power · Per pair, shared
Half-width 1U
Form Factor · Two fit side-by-side
Low-Z + 70/100V
Output Types · Dual-mode
Ecosystem IntegrationThe 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
Supports both low-impedance and 70V/100V distributed line outputs
Half-width 1U chassis, mount two side-by-side in a single rack space
250W shared per channel pair for flexible power distribution
PFC power supply for efficient mains power usage
EuP2103 compliant for low standby power consumption
Works with Optimal Audio Zone controllers, ZonePad, and WebApp
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 |
