Product Highlights
TI TPA3255
Amplifier Chip
≥106dB
SNR
Stereo/Mono
Modes Selection
2x 190W@4Ω
Max Power Output
Fosi Audio ZA3 Balanced Stereo Amplifier
$109.99
Product Highlights
TI TPA3255
Amplifier Chip
≥106dB
SNR
Stereo/Mono
Modes Selection
2x 190W@4Ω
Max Power Output
Features
- PBTL Mono Mode Support
- XLR Input / 12V Trigger in
- Op-Amp Rolling: SS3602, MUSES02, OPA2134PA
- Replaceable Knobs: Black Knob
Pairs well with
Fast, Free Shipping!
24 Months Warranty
30-Day Money-Back Guarantee
Lifetime Customer Support
Fosi Audio ZA3 Balanced Stereo Amplifier
ZA3(NO Power Supply Unit) / US
$109.99
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
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Customer Support
WhatsApp: +8613716612254
support@fosiaudio.com
Mon-Fri: 3:00 AM - 3:00 PM PST -
FAQ’s
If you have any questions, please refer here: FAQs
Review Videos
Amplifying Your Voice, Shaping Our Innovation
At Fosi Audio, behind every innovation, there's a story. The birth of the ZA3 amplifier is just such a story, centered around our users. After the launch of the V3 amplifier, we gathered innumerable feedback from passionate audiophiles. They expressed a desire for us to develop an even better amplifier based on V3.
- Input: RCA, XLR, ¼”TRS; Output: Stereo, Mono
- SNR≥106dB; THD<0.006%; SINAD: 89dB; Frequency Response: 20Hz-20kHz (±0.1dB)
- Rated Power Output: Stereo 180W*2 @4Ω; Mono 235W @4Ω
12V Trigger Sync Interface
Aluminum Alloy and One-Piece Molded Chassis
Logarithmic Potentiometer
Product details
Description
- Dual-Mode Innovation: This new generation mini amplifier offers both stereo and mono modes, and adapts flexibly to your diverse needs, allowing seamless mode switching. In stereo mode, it delivers a robust output of up to 155W, while in mono mode, the power soars to a maximum of 235W. Pair two ZA3 units in mono configuration to create a powerful audio system, significantly enhancing your listening experience.
- Richer Connectivity: Debut amplifier with balanced input and trigger in, the ZA3 features a balanced combo audio signal input connector supporting both XLR and 1/4" TRS plugs. This design minimizes interference and reduces noise floor. The 12V trigger-in connector enables synchronization with other devices, streamlining the process of turning on/off without individual operations.
- Audiophile-Grade Components: The ZA3 features the TPA3255 high-end Class-D amp chip and utilizes premium Japanese NCC, ELNA, and German WIMA capacitors, and Japanese Sumida inductors for exceptional audio quality. With a SINAD rating of up to 89dB, an SNR of up to 106dB, and a low noise floor of only 150μV, it delivers exceptional clarity and low distortion.
- Advanced Heat Dissipation: Based on V3's groundbreaking heat dissipation design, we upgraded ZA3's cooling system by featuring a larger chassis, moving vents to the sides, and adding dust covers to achieve better ventilation for a sustained and stable high power output.
- Enhanced Scalable Fun: Personalize your audio experience with the op-amp rolling feature! The ZA3 stocks five swappable op-amps for left and right channel outputs, balanced input, and subwoofer output. Experiment with compatible DIP8 dual op-amps such as Sparkos SS3602, MUSES02, OPA2134PA, OP249, AD827, RM4558, LM4562, LME49720HA, etc. to fine-tune your sound to perfection.
- What you Get: ZA3 Power Amplifier x1, Power Adapter x1 (The plug of the power adapter will match the country of your delivery address), User Manual x1, our worry-free 24-month warranty, and friendly customer service.
Specifications
- Chip Set: Texas Instruments TPA3255
- Output Power:
With 48V/5A PSU Stereo; 155Wx2 @4Ω; Mono: 235Wx1 @4Ω
With 32V/5A PSU Stereo; 95Wx2 @4Ω; Mono: 110Wx1 @4Ω - 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)
- SINAD: 89dB
- 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: 32V/5A, 48V/5A
What‘s in the box？
- ZA3 Power Amplifier x 1
- 32V/5A or 48V/5A Power Adapter x 1
- User’s Manual x 1
Which Product is right for you?
Compare products to find the best one for your needs.
Type
2.0 CH Amp
Amp Chip
TPA3255
MAX Power Output
2x 300W@4Ω
Input
RCA, XLR, ¼”TRS
Output
Passive SPK +Sub-out
Treble & Bass Control
No
THD+N
<0.006%
SNR
≥106dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Type
Monoblock
Amp Chip
TPA3255
MAX Power Output
300W@4Ω
Input
RCA, XLR, ¼”TRS
Output
Speaker Output
Treble & Bass Control
No
THD+N
<0.006%
SNR
≥123dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Type
Bluetooth 2.0 Ch Amp
Amp Chip
TPA3255
MAX Power Output
2x 300W@4Ω
Input
Bluetooth, RCA
Output
Speaker Output, Pre-Out
Treble & Bass Control
Yes
THD+N
≤ 0.005%
SNR
≥108dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Type
2.0 Ch Amp
Amp Chip
TPA3255
MAX Power Output
300W x2
Input
RCA
Output
Passive Speakers
Treble & Bass Control
Yes
THD+N
≤ 0.3%
SNR
≥ 90dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Type
2.0 Ch Amp
Amp Chip
TPA3255
MAX Power Output
2x 300W@4Ω
Input
RCA
Output
Passive Speakers, Pre-Out
Treble & Bass Control
No
THD+N
<0.003%
SNR
≥110dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Type
2.0 CH Amp
Amp Chip
TPA3255
MAX Power Output
2x 300W@4Ω
Input
RCA, XLR, ¼”TRS
Output
Passive SPK +Sub-out
Treble & Bass Control
No
THD+N
<0.006%
SNR
≥106dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Type
Monoblock
Amp Chip
TPA3255
MAX Power Output
300W@4Ω
Input
RCA, XLR, ¼”TRS
Output
Speaker Output
Treble & Bass Control
No
THD+N
<0.006%
SNR
≥123dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Type
Bluetooth 2.0 Ch Amp
Amp Chip
TPA3255
MAX Power Output
2x 300W@4Ω
Input
Bluetooth, RCA
Output
Speaker Output, Pre-Out
Treble & Bass Control
Yes
THD+N
≤ 0.005%
SNR
≥108dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Type
2.0 Ch Amp
Amp Chip
TPA3255
MAX Power Output
300W x2
Input
RCA
Output
Passive Speakers
Treble & Bass Control
Yes
THD+N
≤ 0.3%
SNR
≥ 90dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Type
2.0 Ch Amp
Amp Chip
TPA3255
MAX Power Output
2x 300W@4Ω
Input
RCA
Output
Passive Speakers, Pre-Out
Treble & Bass Control
No
THD+N
<0.003%
SNR
≥110dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
