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AX3800 MK II
8 Duty 1 Standby Automatic Amplifier Changeover
AX3800 MK II is an advanced amplifier changeover unit that supports 8 duty and 1 standby (8+1) with dual I/O auto switching, cascading, priority switching, pilot tone injection and RS485 remote monitoring. Suitable for large-scale installations.
Dual input and output automatic switching
Built-in 20kHz pilot tone to reduce phantom amplifier workload
RS485 port for remote monitoring and dry contact for integration
Fault detection and recovery within 7 to 15 seconds
Introduction
AX3800 MK II is an advanced amplifier changeover unit with automatic input and 100V output switching to ensure continuous operation during amplifier failure. It offers fast fault detection, stable performance, and reduced noise. With cascading support, one standby amplifier can back up multiple duty units (up to 16), making it suitable for large-scale installations. It features priority single-takeover to prevent overload and a built-in 20kHz pilot tone for efficient operation. RS485 remote monitoring and a built-in buzzer alarm provide reliable fault indication, making it ideal for matrix and large-scale PA systems.
Note: AX3800 MK II is an upgraded version of the now discontinued AX3800 with all other features retained.
Packing information
Carton size: 555 (L) x 295 (W) x 165 (H) mm
Gross weight: 4.50 kg
1 unit per carton
Introduction
AX3800 MK II is an advanced amplifier changeover unit with automatic input and 100V output switching to ensure continuous operation during amplifier failure. It offers fast fault detection, stable performance, and reduced noise. With cascading support, one standby amplifier can back up multiple duty units (up to 16), making it suitable for large-scale installations. It features priority single-takeover to prevent overload and a built-in 20kHz pilot tone for efficient operation. RS485 remote monitoring and a built-in buzzer alarm provide reliable fault indication, making it ideal for matrix and large-scale PA systems.
Note: AX3800 MK II is an upgraded version of the now discontinued AX3800 with all other features retained.
Packing information
Carton size: 555 (L) x 295 (W) x 165 (H) mm
Gross weight: 4.50 kg
1 unit per carton
AX3800 MK II
Power Requirements
Operating voltage
24V DC, 1A
Power consumption
2.5W (0.11A)
Standby consumption
2.3W (0.95A)
Input signal
8 Ch balanced line signal
Input impedance
10k Ohm
Audio output gain
Unity
Pilot tone interval
8 seconds / channel
Pilot tone frequency
20 kHz (±5%)
Detection line
70 / 100V line
Detection level
5V rms min
Failure detection time
20 seconds (max)
Failure recovery time
20 seconds (max)
Zone load rating
1000W at 100V line input
Status indication LED
Normal / Fault / Changeover
Changeover alert
Buzzer alarm with ON/OFF switch
Changeover section
Input and output simultaneously
Physical Specifications
Dimensions (W x H x D)
482 x 88 x 180 mm
Net weight
3.55 kg
Note: The specification parameters may be changed, added, or omitted without prior notice. Last updated on 17 Apr 2026.
8 duty amplifiers and 1 standby unit (8+1), cascading up to 16 duty units
1000W per channel rating
Dual input and output (I/O) changeover with auto switching
Priority switching to prevent overload with single unit takeover
Built-in 20kHz pilot tone to reduce phantom amplifier workload
RS485 port for remote monitoring and dry contact for system integration
Fault detection and recovery within 7 to 15 seconds
Input link switch for easy source connections
Channel isolation switch for unused channels
LED indicators for status, faults, and changeovers
Built-in buzzer alarm for fault detection with ON/OFF control
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International recognitions
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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