Is it possible to use the trigger out from the Fosi Audio ZD3 to two pieces of ZA3 amplifiers?

Yes, use a dual 3.5mm male splitter cable to trigger the ZA3 to switch on synchronously.

How to set up a system using two ZA3 units in mono mode?

- Connect the RCA (XLR) cables to the right-channel RCA (XLR) input ports of the two ZA3 units, and link the speaker wires to the right-channel binding posts.

ZA3 recommendations for replacing op-amps in mono mode?

If you're using RCA mode, please replace only the right op-amp. For XLR mode, swap the right and XLR channel op-amps.

No front light on ZA3 though there is light on the ac adapter.

Long press the volume button for 2 seconds to power it on.

The power on LED light on my ZA3 is dead.

Check if the LED is misaligned with the front panel hole, especially if the op-amp was recently changed. Misalignment could cause the LED not to be visible through the case.

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Fosi Audio ZA3 Balanced Stereo/Mono Amplifier HiFi with TPA3255 Chips, Mini Audio Amp Monoblock with XLR RCA Inputs and 12V Trigger-in for Desktop Bookshelf Passive Speakers with 48V5A Power Supply

Product ID: 593574160

Details

Item dimensions L x W x H
15.5 x 18.4 x
Manufacturer
Fosi Audio
Maximum supply voltage
48 Volts (DC)
Minimum supply voltage
230 Volts
Voltage
48 Volts

⚡235W max mono power

🔗Balanced XLR/TRS inputs

❄️Advanced heat dissipation

R8591

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Elevate your desktop audio game with power, precision, and pro-level polish.

DUAL MODE POWERHOUSE - Switch effortlessly between 180W stereo and 235W mono for tailored audio dominance.
SEAMLESS INTEGRATION - 12V trigger-in syncs your entire setup—power on/off all devices with zero hassle.
CUSTOM SOUND SCULPTING - Swap op-amps to personalize your sonic signature—because your ears deserve bespoke tuning.
PRO GRADE CONNECTIVITY - Balanced XLR and TRS inputs slash noise and interference for crystal-clear sound.
AUDIOPHILE APPROVED COMPONENTS - Premium TPA3255 chip and elite Japanese & German parts deliver pristine, distortion-free audio.

The Fosi Audio ZA3 is a compact, high-performance stereo/mono amplifier featuring up to 235W output, balanced XLR/TRS inputs, and a 12V trigger for seamless system integration. Engineered with premium Class-D TPA3255 chips and top-tier Japanese and German components, it offers exceptional clarity, low noise, and advanced heat dissipation. Its flexible dual-mode operation and customizable op-amp rolling make it a perfect fit for audiophiles and professionals seeking scalable, high-fidelity sound.

Specifications

ASIN	B0CLP4T5L7
Best Sellers Rank	6,156 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 8 in Hi-Fi Amplifiers
Brand	Fosi Audio
Country Of Origin	China
Customer Reviews	4.5 out of 5 stars 1,291 Reviews
Item Dimensions	15.5 x 18.4 x 5.1 centimetres
Item dimensions L x W x H	15.5 x 18.4 x 5.1 centimetres
Manufacturer	Fosi Audio
Manufacturer Part Number	ZA3
Material	metal
Maximum Output Power	235W
Maximum Supply Voltage	48 Volts (DC)
Maximum supply voltage	48 Volts (DC)
Minimum Supply Voltage	230 Volts
Minimum supply voltage	230 Volts
Model Number	ZA3
Mounting Type	Surface Mount
Mounting type	Surface Mount
Number of Channels	2
Number of Items	1
Number of Packs	1
Output Power	235 Watts
Package Type Name	Cardboard
Product Warranty	2 years
Specification Met	RoHS
Supply Current	230 Milliamps
Unit Count	1.0 count
Voltage	48 Volts

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R8591

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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