Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp With TPA3255 Chip

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Fosi Audio

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Sale price₹ 13,990.00 Regular price₹ 16,999.00
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Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp With TPA3255 Chip 01

Dual-Mode Versatility

Experience the next level of audio versatility with the Fosi Audio ZA3 Balanced Stereo Amplifier. This innovative mini amplifier seamlessly switches between stereo and mono modes, offering a robust 155W output in stereo and a staggering 235W in mono. Pair two ZA3 units in mono configuration for a powerful audio system, elevating your listening experience to new heights.

Rich Connectivity

The ZA3 introduces a new era of connectivity with its balanced input and trigger-in features. The balanced combo audio signal input connector supports both XLR and 1/4" TRS plugs, minimizing interference and reducing the noise floor. The 12V trigger-in connector enables effortless synchronization with other devices, simplifying the on/off process without individual operations.

Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp With TPA3255 Chip

Audiophile-Grade Components

Immerse yourself in unparalleled audio quality with the Fosi Audio ZA3. This amplifier delivers exceptional clarity and low distortion, featuring the TPA3255 high-end Class-D amp chip, Japanese NCC, ELNA, German WIMA capacitors, and Japanese Sumida inductors. With a SINAD rating of up to 89dB, an SNR of up to 106dB, and a low noise floor of only 150μV, the ZA3 sets a new standard for audiophile-grade components.

Advanced Heat Dissipation

Built on V3's groundbreaking heat dissipation design, the ZA3 goes even further with an upgraded cooling system. The larger chassis, side vents, and added dust covers ensure improved ventilation, resulting in sustained and stable high-power output. Enjoy uninterrupted audio performance without compromising on thermal efficiency.

Enhanced Scalable Fun

Customize your audio experience with the ZA3's op-amp rolling feature. This amplifier has five swappable op-amps for left and right channel outputs, balanced input, and subwoofer output. Experiment with compatible DIP8 dual op-amps like Sparkos SS3602, MUSES02, OPA2134PA, OP249, AD827, RM4558, LM4562, LME49720HA, and more to fine-tune your sound to perfection.

Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp With TPA3255 Chip

Model: ZA3

Chip Set: Texas Instruments TPA3255

Output Power:
With 48V/5A PSU
Stereo: 155Wx2 @4Ω
Mono: 235Wx1 @4ΩWith

Terminating Impedance: 2-8Ω

Input Mode: RCA, XLR, 1/4" TRS

Output Mode Speaker Output (supports banana plug or bare wire connection), Active Subwoofer Output

Frequency Range: 20Hz - 20KHz(±0.1dB)


THD: <0.006%

SNR: ≥106dB

Dynamic Range: ≥106dB

Device Dimension: 15.49 x 18.39 x 5.08 cm; 1.78 Kilograms

DC Input Range: 24-48V

Power Supply: 48V/5A

Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form:
Cable: 1-month warranty only for manufacturing defects only

Fosi Audio is a dynamic brand dedicated to providing the most comprehensive range of Hi-Fi audio products in the market. We cater to passionate audiophiles by offering Hi-Fi products, DIY kits, and expert guidance, ensuring an immersive audio experience. Beyond a mere transaction, we foster enduring relationships with our clients, supporting them throughout their audio journey.

Our diverse product lineup includes the Hi-Fi power amplifier, pre-amplifier, headphone amplifier, DAC, music player, Bluetooth receiver, DIY board, DIY chassis, and an array of DIY kits. These meticulously crafted offerings embody our commitment to exceptional sound quality and innovation.

Established in China in 2017, Fosi Audio was founded by a team of devoted audiophiles. Our products have gained significant popularity within the Chinese DIY audio community, amassing a large and dedicated following. To expand our reach beyond borders, we launched this website in 2017 and began offering a selection of products on Amazon under the name "Fosi audio." However, please note that many of our outstanding products are not yet available on this website or Amazon. If you cannot find what you're looking for, simply reach out to us via email, and we will be delighted to assist you in finding the perfect product to meet your needs.

At Fosi Audio, we are not just a brand; we are your partner in achieving audio excellence. Join us on this immersive sonic journey and experience the true essence of Hi-Fi audio.

Customer Reviews

Based on 2 reviews
Psysword Rizvi (Delhi)
Very good amp

Will replace very expensive and established amplifier brands. I have used them as monoblocks with a tube preamp with my quadral m4 tower speakers and it's fabulous sound overall. Well done fosi

Thank you for your kind words and for sharing your positive experience with our Fosi Audio ZA3 amplifier. We are glad to hear that it has exceeded your expectations and that it has been able to replace more expensive brands. Thank you for choosing The Audio Store.

Crescence Dsouza (Kochi)
Great performance

For the price you pay it’s a good deal. Amp is amazing and gives solid performance. You cannot compare to the regular AB amps which cost 75000/- and above but still it performs well. Good bargain for the price you pay.

Thank you for your review! We are glad to hear that you are enjoying the performance of the Fosi Audio ZA3 Balanced Stereo Amplifier. We strive to provide high-quality products at an affordable price, and we are happy to hear that you feel this is a good deal. Thank you for choosing Fosi Audio & The Audio Store.

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