Pure Resonance Audio MA120BT and SMG1 Sound Masking Bundle

The Pure Resonance Audio MA120BT and SMG1 Sound Masking Bundle provides a professional, ready-to-install solution for speech privacy, background noise control and paging. Combining the 120W MA120BT commercial mixer amplifier with the SMG1 sound masking generator, this system delivers high-fidelity white, pink and brown noise for offices, medical facilities, call centers and open-plan workspaces.

The MA120BT offers seven channels of flexible input options including microphone, line and Bluetooth audio, while the SMG1 generates adjustable sound masking tones to reduce distractions and enhance acoustic comfort. Designed for 24/7 reliability, this commercial bundle delivers clarity, control and ease of installation in a compact format ideal for professional environments.

Together, these components form a powerful, energy-efficient sound masking and paging system that improves privacy, focus and acoustic balance in modern spaces.

Key Features

• Complete Sound Masking System: Combines the MA120BT mixer amplifier and SMG1 sound masking generator for seamless operation.
• High Power Output: 120W commercial-grade amplifier supports 70V, 100V and low-impedance speaker loads.
• Selectable Noise Profiles: SMG1 provides white, brown and pink noise with adjustable tone control.
• Bluetooth & Media Playback: Built-in Bluetooth and USB/SD playback for flexible audio input options.
• Commercial Reliability: Full protection circuitry, fanless operation and compact chassis for continuous use.

Technical Specifications

MA120BT Mixer Amplifier

• Rated Power Output: 120 Watts
• Speaker Outputs: 70V, 100V and 4 Ω, 8 Ω or 16 Ω
• Connectors: Mic 1 input (balanced XLR with phantom power); Inputs 2-3 Mic/Line switchable unbalanced 6.3 mm phone jack; Line 1-2 inputs (RCA); Line out (RCA)
• Attenuation: Mic 1-3, Line 1-2, MP3/FM, Bass/Treble and Master
• Input Sensitivity: Mic 1-3 5-8 mV @ 600 Ω; Line 150-470 mV @ 10 kΩ (unbalanced RCA)
• Line Out: 0.775 V (0 dBV)
• Frequency Response: 60 Hz – 15 kHz (±3 dB)
• S/N Ratio: Line ≥ 85 dB; Mic ≥ 72 dB
• THD: Less than 0.5 %
• Protection: Short-circuit, clip, overload and high-temperature protection
• Power Consumption: 60 W
• Power Supply: 115 V AC 60 Hz and 24 V DC
• Remote Control: IR remote control with replaceable CR2025 3 V battery
• Dimensions (H × W × D): 3.5 × 11.8 × 10.8 in (88 × 300 × 275 mm)
• Weight: 6.6 lbs (3.0 kg)

SMG1 Sound Masking Generator

• Noise Type: White, Brown and Pink with tone adjustment
• Outputs: Dual RCA and Balanced ⅛-inch (3.5 mm) TRS
• Material: Aluminum enclosure
• Power Supply: 12 V DC adapter
• Dimensions (H × W × D): 0.87 × 3.54 × 3.74 in (22 × 90 × 84 mm)
• Weight: 0.35 lbs (0.16 kg)
• Shipping Dimensions (H × W × D): 1.5 × 6.15 × 8.63 in (38 × 156 × 219 mm)
• Shipping Weight: 1.0 lb (0.45 kg)