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Amplify audio content to provide atmosphere and ambience in your classroom, retail store, lecture hall, coffee shop, pub, or restaurant with this PA2B Compact Digital Amplifier from Alfatron. The PA2B is a compact, digital class-D amplifier with two line inputs and one balanced mic input.
Bridge connection, dual-mono, mic mix, and EQ control are among the vast powerful functions of the device, which also provides 48V phantom power through a mic input that supports dynamic and wireless mics as well as 48V phantom power for condenser microphones. Encased in an anti-static chassis, the PA2B is sturdy and well protected for long-term use and overall stability.
Key Features
User Manual
1.6 MB
Amplifier
| Form Factor/Type | Wall-Mount |
| Number of Channels | 3 Input |
| Power Rating | 20 W per Channel 40 W Bridged |
| Amplifier Class | Class-D |
Performance
| Frequency Response | Mic/Line Input to Amplifier: 20 Hz to 20 kHz |
| I/O Impedance | 1/8″ / 3.5 mm/RCA/Block Line/Mic Input: > 10 Kilohms (Balanced or Unbalanced) |
| Max Gain | 32 dB (at 4 Ohms) |
| VCA Control | Yes |
| SNR | 80 dB |
| THD+N | 1% (1 kHz) 0.3% (20 kHz) |
| CMRR | > 70 dB (20 Hz to 20 kHz) |
Signal Processing
| DSP | Yes |
| EQ | 2-Band Shelving EQ |
Connectivity
| Audio I/O | 1 x Stereo RCA TS Line Input 1 x 1/8″ / 3.5 mm TRS Line Input 1 x Block 3-Pin Balanced Mic Input 1 x 1/8″ / 3.5 mm TRS Line Output |
| Digital Audio I/O | None |
| Network I/O | None |
| Other I/O | 1 x Block 3-Pin RS-232 Input 1 x 1/8″ / 3.5 mm TS Remote |
| Speaker Outputs | 1 x Block 4-Pin Stereo 4-Ohm/8-Ohm Main |
| Number of Module Slots | None |
| Phantom Power | Yes |
| Bluetooth | None |
| Media/Memory Card Slot | None |
Power
| AC Input Power | Universal: 100 to 240 VAC, 50 / 60 Hz |
| DC Input Power | 24 VDC |
| Current Consumption | 2.71 A |
| Power Consumption | 45 W |
| AC Outlet | None |
Physical
| Certifications | CE, EAC, FCC *as per Manufacturer |
| Operating Temperature | 32 to 72F / 0 to 40C |
| Storage Temperature | 14 to 140F / -10 to 60C |
| Dimensions | 4.8 x 3.4 x 1.6″ / 123.0 x 87.0 x 40.0 mm |
| Weight | 1.5 lb / 0.7 kg |
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