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.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fosi Audio 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: 593516480

Details

Item dimensions L x W x H
6.1 x 7.24 x 2
Manufacturer
Fosi Audio
Maximum Supply Voltage
48
Minimum Supply Voltage
24
Voltage
48 volts

⚡235W max power output

🔗Balanced XLR/TRS input

❄️Advanced heat dissipation

COP 1047851

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered 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 Colombia.

Secure transaction

Description

🎧 Elevate your sound game with Fosi ZA3 — where power meets precision.

CUSTOM SOUND LAB - Swap op-amps to fine-tune your audio signature and stand out in your home theater setup.
COOL UNDER PRESSURE - Upgraded ventilation and dust covers keep your amp running stable during marathon listening sessions.
DUAL MODE POWERHOUSE - Switch effortlessly between 180W stereo and 235W mono modes for tailored audio dominance.
PRO GRADE CONNECTIVITY - Balanced XLR and 1/4" TRS inputs slash noise and interference for crystal-clear sound.
AUDIOPHILE APPROVED COMPONENTS - Premium TPA3255 chip with Japanese and German capacitors delivers pristine clarity and ultra-low distortion.

The Fosi Audio ZA3 is a compact, high-performance stereo amplifier featuring dual-mode output up to 235W, balanced XLR/TRS inputs for noise reduction, and premium audiophile-grade components. Its advanced heat dissipation system ensures stable operation, while customizable op-amp rolling lets users personalize their sound. Ideal for desktop, home theater, and passive speaker setups, it combines professional-grade features with sleek, space-saving design.

Specifications

ASIN	B0CLP4T5L7
Best Sellers Rank	#5,519 in Electronics ( See Top 100 in Electronics ) #12 in Audio Component Amplifiers
Brand Name	Fosi Audio
Customer Reviews	4.5 4.5 out of 5 stars (1,321)
Included Components	Fosi Audio ZA3 Power Amplifier x1；48V5A Power Adapter x1；User Manual x1
Item Dimensions	6.1 x 7.24 x 2 inches
Manufacturer	Fosi Audio
Maximum Output Power	235W
Maximum Supply Voltage	48 volts_of_direct_current
Minimum Supply Voltage	24 volts_of_direct_current
Model	ZA3
Mounting Type	Surface Mount
Number of Channels	2
Number of Items	1
Number of Packs	1
Output Power	235 watts
Package Type Name	Cardboard Box
Part Number	ZA3
Specification Met	FCC
Unit Count	1 Count
Voltage	48 volts
Warranty Description	24-month manufacturer

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

COP 1047851

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered 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 Colombia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews