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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ZA3 Balanced Stereo Amplifier Home Audio Component Mini 2 Channel Mono Amp TPA3255 for Subwoofer Desktop Home Theater Bookshelf Tower Floorstanding Passive Speakers with 48V Power Supply

Product ID: 593516485

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
24 Volts (DC)
Voltage
48 Volts

⚡235W max power output

🔗Balanced XLR/TRS combo input

❄️Advanced heat dissipation system

€ 320.09

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Power your sound, own the room.

CUSTOMIZABLE SOUND TUNING - Swap op-amps to tailor your audio signature and stand out in your audiophile circle.
NEXT LEVEL COOLING DESIGN - Enhanced ventilation and dust covers keep your amp running cool during marathon listening sessions.
DUAL MODE POWER FLEXIBILITY - Switch effortlessly between 155W stereo and 235W mono modes to match your audio setup.
AUDIOPHILE APPROVED COMPONENTS - Premium TPA3255 chip and high-end capacitors deliver pristine clarity with ultra-low distortion.
PRO GRADE BALANCED CONNECTIVITY - XLR and 1/4" TRS inputs reduce noise for crystal-clear sound in any environment.

The Fosi Audio ZA3 is a compact yet powerful stereo amplifier featuring dual-mode operation with up to 235W output, balanced XLR/TRS inputs for noise-free connectivity, and premium audiophile-grade components. Its advanced heat dissipation system ensures stable performance, while customizable op-amp rolling lets you fine-tune your sound. Perfect for desktop, home theater, and bookshelf speakers, it’s designed for professionals and enthusiasts who demand clarity, power, and flexibility.

Specifications

ASIN	B0CLP4T5L7
Best Sellers Rank	#7,139 in Electronics ( See Top 100 in Electronics ) #8 in Home Audio Amplifiers
Brand Name	Fosi Audio
Customer Reviews	4.5 4.5 out of 5 stars (1,291)
Item Dimensions	15.5 x 18.4 x 5.1 centimeters
Manufacturer	Fosi Audio
Material Type	metal
Maximum Output Power	235 watts
Maximum Supply Voltage	48 Volts (DC)
Minimum Supply Voltage	24 Volts (DC)
Model	ZA3
Mounting Type	Surface Mount
Number of Channels	2
Number of Items	1
Number of Packs	1
Output Power	235 Watts
Part Number	ZA3
Specification Met	RoHS
Unit Count	1 Count
Voltage	48 Volts

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TrustScore 4.5 | 7,300+ reviews

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€ 320.09

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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