amperes electronics
Professional Public Address (PA) System Manufacturer
PA322
20W 4 Ohm Mini Amplifier with Dual Inputs (Class D)
PA322 is a compact 20W 4 Ohm mini amplifier with dual audio inputs with remote source selection via VC7001 volume controller, ideal for amplifying unbalanced signals TVs or music players.
Dual inputs via Phoenix connectors with remote selection and volume control via VC7001
Built-in 100V audio override for emergency announcements
High efficiency Class D amplifier with 20W output at 4 or 8 Ohms
Small and space-saving size for easy installation in ceilings or cabinets
Introduction
PA322 is a compact Class D mini amplifier designed for small area audio playback, such as hotel bathrooms, classrooms, lounges, and counter call systems. Despite its size, it delivers clear and reliable sound with 20W output at 4 or 8 Ohms, making it perfect for one or two speakers. It features dual audio inputs via detachable Phoenix connectors with remote source selection via VC7001 volume controller, ideal for amplifying unbalanced line signals from TVs or music players.
A built-in emergency override relay allows announcements from the central PA system to take priority over local audio, ensuring important messages are always heard. Its compact size allows easy installation inside cabinets or above ceilings, keeping it out of sight while delivering quality sound.
Packing information
Carton size : 555 (L) x 295 (W) x 165 (H) mm
Gross weight : 16.2 kg
20 unit(s) per carton
Introduction
PA322 is a compact Class D mini amplifier designed for small area audio playback, such as hotel bathrooms, classrooms, lounges, and counter call systems. Despite its size, it delivers clear and reliable sound with 20W output at 4 or 8 Ohms, making it perfect for one or two speakers. It features dual audio inputs via detachable Phoenix connectors with remote source selection via VC7001 volume controller, ideal for amplifying unbalanced line signals from TVs or music players.
A built-in emergency override relay allows announcements from the central PA system to take priority over local audio, ensuring important messages are always heard. Its compact size allows easy installation inside cabinets or above ceilings, keeping it out of sight while delivering quality sound.
Packing information
Carton size : 555 (L) x 295 (W) x 165 (H) mm
Gross weight : 16.2 kg
20 unit(s) per carton
PA322
Power Requirements
Power rating
20W 4 Ohm
Operating voltage
220 - 240V AC , 50/60 Hz
Current consumption (240V AC)
Idle: 1.55W
Full load: 5.5W 0.03A
No. of inputs
2 inputs
Input signal
2 x mono, unbalanced line 100V line audio 24V DC overriding
Input connector
Detachable phoenix
Input sensitivity
800 mV
Max input
1V rms
Input impedance
10k Ohm
Output impedance
4 Ohm
Output connector
Detachable phoenix
Controls
External volume & source selection
Frequency response
20 - 20 kHz
S/N ratio @ 1 kHz ± 3 dB
>70 dB
THD + Noise
0.24%
Protection
Thermal, short circuit, overload, AC fuse
External link (optional)
VC7001: Volume Controller for PA322
Physical Specifications
Dimensions (W x H x D)
150 x 55 x 95 mm
Weight
0.85 kg
Note: The specification parameters may be changed, added, or omitted without prior notice. Last updated on 22 Apr 2026.
20W output at 4 or 8 Ohms
Class D amplifier module with low heat dissipation and high sound reproduction
Built-in100V line audio override for emergency paging
Dual audio inputs via detachable Phoenix connectors
Remote source selection and volume adjustment via VC7001 volume controller
Amplify unbalanced signals from TVs or music players or other audio sources
Compact size for easy installation
Ideal for small areas like hotel bathrooms, classrooms, lounges, and counter call systems
Registered association members of
International recognitions
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Payment
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Sales Office (Malaysia)
70, Jalan Industri PBP 3,
Taman Perindustrian Pusat Bandar Puchong,
47100 Puchong, Selangor, Malaysia.
Tel: +603-5882 7757 / 7758
Production Factory (Malaysia)
2, Jalan Meranti Puchong D25@Meranti Puchong
47120 Puchong, Selangor, Malaysia
Export Sales Office (Singapore)
Amperes Asia Pte Ltd
(Co Reg: 201102253E)
1, North Bridge Road, #13-03, High Street Centre, Singapore 179094
Amperes Electronics Sdn Bhd
SSM Registration No: 200001006420 (509025-X)
Your Trusted PA System Manufacturer since 1999
Sales Office (Malaysia)
70, Jalan Industri PBP 3,
Taman Industri Pusat Bandar Puchong
47100 Puchong, Selangor, Malaysia.
Tel: +603-5882 7757 / 7758
Production Factory (Malaysia)
2, Jalan Meranti Puchong D25@Meranti Puchong 47120 Puchong, Selangor, Malaysia
Export Sales Office (Singapore)
Amperes Asia Pte Ltd
(Co Reg: 201102253E)
1, North Bridge Road, #13-03, High Street Centre, Singapore 179094