The Adastra UM90 is an ultra-compact mixer-amplifier designed for both mobile and installed public address systems. With a powerful 90W output, it supports 100V line or 8 Ohm speakers, making it an ideal choice for small to medium PA installations. The unit features an internal USB audio player, FM tuner, and Bluetooth wireless receiver, allowing seamless music playback from various sources. Its compact size and efficient Class D amplifier design ensure versatility and convenience in various settings.

Features

• Ultra Compact Design: Fits easily into tight spaces, perfect for mobile or fixed installations.
• Efficient Class D Amplifier: Provides high power output with minimal heat generation.
• Multi-Source Playback: Includes an internal USB player, FM tuner, and Bluetooth receiver for versatile audio streaming.
• User-Friendly Controls: Front panel volume controls for mic, line, and master volume for easy operation.
• Flexible Output Options: Mono output suitable for either 100V line or 8 Ohm speakers, connected via screw terminals.
• Rack Mountable: Comes with hardware for mounting two units side by side in a 1U 19" rack space.

Specifications

• Output Power: 90W RMS (80W @ 24Vdc)
• Alarm Output: Supports fog, siren & alert signals
• Dimensions: 300 x 210 x 44 mm
• Weight: 3.02 kg
• Power Supply: 170-264Vac, 50Hz (IEC) or 24Vdc
• Amplifier Construction: Class D with transformer output
• Audio Sources: USB, FM, Bluetooth
• Inputs: 1 x Mic (6.3mm), 1 x Line (2 x RCA), 1 x Aux (3.5mm)
• Line Output: 2 x RCA (mono)
• Speaker Outputs: Screw terminals - 100V / 8 Ohms / Common
• DC Power: 24Vdc screw terminals
• Mute Function: 24V relay contacts
• Total Harmonic Distortion (THD): <0.4% @ 1kHz
• Input Impedance: 1k Ohms (mic/line)
• Input Sensitivity: -10dB (line), -45dB (mic)
• Signal-to-Noise Ratio (SNR): 80dB (line), 75dB (mic)
• Frequency Response: 100Hz - 18kHz