Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip
- Regular price
- $149.99 USD
- Sale price
- $149.99 USD
- Regular price
-
$149.99 USD
Tax included.
Shipping calculated at checkout.
- PBTL Mono Mode Support
- XLR Input / 12V Trigger in
- Op-Amp Rolling: SS3602, MUSES02, OPA2134PA
- Replaceable Knobs: Black Knob
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
Smooth synchronization with other devices for easy one-click power management, unifying your audio system's operation. (Please use a 3.5mm stereo trigger cable for the trigger input on the ZA3, it must be noted that it takes several seconds for the trigger to activate the ZA3.)
Aluminum Alloy and One-Piece Molded Chassis
Delicate sandblasting and smooth beveled edges, exuding a premium, exquisite texture and high-end appeal.
Logarithmic Potentiometer
Helps to achieve a fine volume tuning to match human ear's auditory characteristics.
- Dual-Mode Innovation: This new generation mini amplifier offers both stereo and mono modes, adapts flexibly to your diverse needs, allowing seamless mode switching. In stereo mode, it delivers a robust output of up to 180W, 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, OPA2604, OPA2134PA, OP249, AD827, RM4558, LM4562, LME49720HA, etc. to fine-tune your sound to perfection.
- 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
- Stereo Mode : Replacing the op amps for both left and right channels in stereo mode, regardless of RCA or XLR inputs, will notably enhance sound quality.
Mono Mode: Only replacing the op amps for the right channel. - XLR Input: Using XLR input mode allows for further sound quality enhancement by replacing the op amps for the XLR channel.
- Subwoofer Channel: If a subwoofer is connected, there's the option to replace the op amps responsible for the subwoofer channel.
Note: Carefully align the notch/the number '1' on the chip's cover with the 'O1' mark on the PCB.
- Here is a tutorial video for your reference: https://youtu.be/VvYYwxAfBi4
N
The amp was delivered to me within a “reasonable” amount of time but arrived without the AC power adapter never/ cable. It is clearly stated in the web site and box that it is included but the space in the box is empty. I tried to contact Fosi several times and there is no reply.
J
Paired up 2 -ZA3’s with the ZD3 pre amp and wow ! This is a killer combo . Love the look and sound quality is equal to a $5000 audio set up. Plenty of options on how to connect this mono amps up with the added feature of swappable op amps so you can get the sound you want. Buy one and run it in stereo mode or buy two and run them in mono. You won’t be disappointed.
R
I was septic at first because I was ordering directly from fosy in china I always prefer amazon because I have a kind of money back policy… but the prices at fosi where muche better and I got my product fast and even had to write for some info and there communication was great! Very happy with the product and the service !! Plus the promotion they offer on fosi website where amazing!! I’m a happy costumer from Quebec Canada!!
R
The Fosi Audio ZA3 power amp represents the new era of great sounding inexpensive class D amps. The sound is clean with lots of power and punch, perfect for making the ZA3 a centeral piece for building a nice sounding desktop or small room stereo system. I have mine paired with a WiiM Pro Plus, Polk Signature Elite ES10 bookshelf speakers and an old powered subwoofer (making use of the ZA3's subwoofer out connection) and the system sounds quite good for its relatively low cost.
S
A mighty little thing, excellent build quality, bundled with a good quality power brick. The volume pot on mine has poor tracking at the extreme low end, but no issues at normal listening volumes. I'm very happy and highly recommend this to others. Hopefully FOSI will make a whole family of units in the same chassis and colour scheme to stack on top of this (e.g. a basic DAC, and a sub amplifier with basic gain/x-over knobs), if so I'll be definitely buying more. Quick delivery to NZ and very well packaged.