Fosi Audio ZA3 balanced stereo amplifier (>2x 180W, 4 Ohm)

Compact high-end amplifier with stereo/mono modes, 235W output, XLR input, swappable op-amps, and 12V trigger for audiophile-grade systems.

Product no:

175 EUR /pc.

AV-CONNECTION

Fast worldwide delivery

+20 years of experience

30 days return policy

Price protection

5-star customer service

Highlights:

• Class-D amplifier with stereo and mono modes
• Supports balanced XLR and 1/4” TRS inputs
• Up to 235W in mono mode – ideal for high-performance setups
• Swappable op-amps for personalized sound
• Efficient heat dissipation with ventilation design and dust covers
• Compact one-piece aluminum chassis
• 12V trigger input for easy synchronization
• Ultra-low distortion and whisper-quiet audio reproduction

Compact Powerhouse with Flexible Stereo and Mono Functionality:

The Fosi Audio ZA3 is a powerful and versatile mini amplifier that delivers next-generation sound performance directly into your home. Designed for both audio enthusiasts and demanding audiophiles, the ZA3 supports both stereo and monoblock configurations – a rare feature in such a compact design. This gives you full control and flexibility to adapt your setup as your needs evolve. In stereo mode, it delivers up to 180W per channel at 4 Ohms, which is more than enough to drive even power-hungry speakers with clarity and punch. Switch to mono mode and unleash up to 235W to a single speaker, providing dynamic range and headroom for immersive audio experiences. For true high-performance setups, two ZA3 units can be paired in mono mode to create a balanced, ultra-powerful system ideal for home theater or audiophile listening environments.

Advanced Sound Quality and Upgrade Options:

At the heart of the ZA3 lies Texas Instruments' premium TPA3255 Class-D amplifier chip, known for its superb efficiency, ultra-low distortion, and dynamic sonic character. The internal layout separates digital and analog circuitry, reducing interference and preserving sonic purity. Audiophile-grade components such as Japanese NCC and ELNA capacitors, German WIMA capacitors, and Sumida inductors are carefully selected to deliver refined, accurate sound reproduction. For the audio tweakers and DIY enthusiasts, the ZA3 offers an exciting feature – op-amp rolling. Thanks to the swappable DIP8 dual op-amps, you can easily fine-tune the amplifier’s sound signature to match your personal listening preferences. This level of customization makes the ZA3 stand out in its class.

Optimized for the Modern Home Audio System:

The ZA3 offers excellent connectivity and integration for today’s home audio setups. With both RCA and balanced XLR/1/4” TRS combo inputs, it seamlessly connects to a wide range of sources – from simple DACs to advanced preamps. The balanced input ensures reduced noise and greater signal integrity, especially over longer cable runs or in environments with electrical interference. The integrated 12V trigger input allows for automatic power control in synced systems, so your entire setup can turn on and off at the push of a button. The beautifully crafted aluminum chassis is machined from a single block and features a fine sandblasted finish and smooth edges, offering both elegance and durability. Side-mounted ventilation with dust covers ensures optimal cooling and long-term stability, even under heavy use.

Specifications:

• Chipset: Texas Instruments TPA3255
• Output Power (48V/5A): 155Wx2 @4 Ohm stereo, 235W @4 Ohm mono
• Output Power (32V/5A): 95Wx2 @4 Ohm stereo, 110W @4 Ohm mono
• Input: RCA, XLR, 1/4" TRS
• Output: Speaker output (banana plug or bare wire), active subwoofer
• Terminating Impedance: 2–8 Ohm
• Frequency Response: 20Hz – 20kHz (±0.1dB)
• THD: <0.006%
• SINAD: 89dB
• SNR: =106dB
• Dynamic Range: =106dB
• DC Input Range: 24V–48V
• Dimensions: 15.49 x 18.39 x 5.08 cm
• Weight: 1.78 kg

Brand description - Fosi Audio

Fosi Audio redefines HiFi by combining innovation, quality, and value. Since 2017, they have been creating high-performance home audio solutions that integrate advanced technology with affordability. Our product range includes amplifiers, DACs, speakers, and headphone amps—designed in close collaboration with users to ensure an unparalleled sound experience. With a passion for HiFi and a commitment to excellence, they continue to deliver top-tier sound without the premium price tag.

Manuals and user guides for Fosi Audio products

Unfortunately, as manufacturers do not make manuals or guides in all languages, we cannot guarantee that a local language manual is included for the item.
- If you are unsure about a manual available in the desired language, just contact us and we will do what we can to help.