The CTRLPA CT912U is a compact 120 W digital multimedia PA amplifier for classrooms, meeting rooms, retail, and small venue systems. It offers 70 V/100 V constant-voltage and 4–16 Ω low-impedance outputs, plus a 100 V priority input for seamless link into larger PA plants. Built-in Bluetooth, USB/SD MP3, FM tuner, mic priority mute (−30 dB), bass/treble, soft-start, and overload protection; LCD status and mic/AUX/line I/O in a 260 × 228 × 72 mm chassis (3.6 kg).

• Output power: 120 W (digital amp)
• Outputs: 4 Ω low-Z; 70 V / 100 V constant voltage
• Aux out: 600 Ω, 1 V (0 dBV)
• Inputs: MIC (unbalanced), AUX (unbalanced); 100 V priority in
• Media: Bluetooth, USB/SD MP3, FM radio
• Frequency response: 60 Hz–15 kHz (±3 dB)
• THD: ≤1% at 1 kHz, 1/3 rated voltage
• SNR: MIC 70 dB; AUX 80 dB
• Tone: Bass ±10 dB @ 100 Hz; Treble ±10 dB @ 10 kHz
• Mic priority mute: −30 dB on other inputs
• Power: AC 220–240 V / 50–60 Hz; consumption 120 W
• Dimensions: 260 × 228 × 72 mm; net weight 3.6 kg