Description

⚡ Fosi Audio ZA3-48V – Compact stereo/mono amplifier

TPA3255 – RCA / XLR / TRS – Sub Out – 48V

📌 Product description

The Fosi Audio ZA3-48V is a compact Class-D amplifier based on the Texas Instruments TPA3255 chip, designed to drive passive speakers with excellent power headroom. It operates in either stereo or mono mode, making it highly versatile for a range of audio installation scenarios.

It accepts RCA, XLR and 1/4″ TRS inputs, and features a speaker output as well as an active subwoofer output with a low-pass filter. With a 48V power supply, it can deliver up to 155W x 2 in stereo at 4Ω or 235W x 1 in mono at 4Ω.

Key features

• Compact Class-D amplifier.

• Texas Instruments TPA3255 chip.

• Stereo and mono modes.

• RCA, XLR and 1/4″ TRS inputs.

• Speaker outputs and active subwoofer.

• Compatible with 2Ω to 8Ω.

• 12V trigger input

• Op-amp swapping is possible.

🔧 Technical Specifications

• Type: Class-D amplifier.

• Chipset: Texas Instruments TPA3255.

• Inputs: RCA, XLR, 1/4″ TRS.

• Outputs: Speaker Output, Active Subwoofer Output.

• Modes: Stereo / Mono.

• Power output: 48V/5A: 155W x2 @ 4Ω in stereo, 235W x1 @ 4Ω in mono.

• Power output: 32V/5A: 95W x2 @ 4Ω in stereo, 110W x1 @ 4Ω in mono.

• Impedance: 2Ω to 8Ω.

• Frequency response: 20 Hz–20 kHz (±0.1 dB).

• SNR : ≥106dB.

• THD : <0.006%.

• SINAD : 89dB.

• Power supply: 24V to 48V DC.

🎧 Applications

• Setup hi-fi compact.

• Office or living room.

• Passive speakers with an impedance of 2Ω to 8Ω.

• Stereo system with active subwoofer.

• A more powerful mono setup.

💪 Benefits

• High power in a compact design.

• Stereo and mono modes.

• Balanced and unbalanced inputs.

• Dedicated subwoofer output.

• Compatible with a range of audio setups.

• Option to customise the sound using op-amps.

📦 Box contents

• 1 × Fosi Audio ZA3-48V.

• 1 × 48V/5A power supply.

• 1 × User manual.