Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip
- Regular price
- $129.99 USD
- Sale price
- $129.99 USD
- Regular price
-
$129.99 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
n
Just received the amp this week and very impressed with the sound stage for the money.. Driving a pair of JBL horn speakers and sound stage is good..
Just purchased the second ZA3 and also sponsored the Kickstarter project...Place orders for the step-up Op amps and looking forward to rolling the amps like tubes.
R
Exceptional amplifier! The sound quality is top-notch, delivering rich tones with clarity and depth. It's powerful enough to fill any room with music, and the build quality is superb for this price range. Definitely a must-have for any new audiophile.
M
I wrote a review on FOSI AUDIO's forum, so I won't be rambling on much about it over here.
The hype is there for a good reason and it's because it's that good.
I figured I'd take a chance because of all the awesome reviews, and the feeling of getting back into audio again, woe, wow, Fosi did it for me. I bought one and then a few weeks later, another.
Don't take my word for it
, just buy it and try it out. It smoked my well regarded 18 hundred dollar amp and a few others costing less. It can sound better than some amps costing 3 to 4k or maybe even more than that.
Let it break in for at least 300 hundred hours. The only thing I notice, I have a slight squiggly high pitch sound coming from my tweeters in rca mode.
I'm waiting for Fois audio to respond. This is in mono mode and only in rca mode that does this, not in balanced mode. My speakers are hyper sensitive at 96 db.. Tekton enzo's, it matches up in sound beyond what I was expecting. The opa2134pa opamps are another step up in sound quality then the stock opamps. I bought 2 OPA2134PA opamps for the left/right amps, and 2 for the xlr connections. I was confused with most reviews that do not mention that if you do an opamp swap, they are all of the same opamp numbers in the sub amp section along with all the left/right xlr. I took both the sub out opamp's out of the signal path and left it empty, you can do that.
I went with all of the same opamps, it makes sense to do that, what would be the point of leaving in the stock opamp's if it has more distortion specs than the opamps opa2134pa? Makes sense too me. Lot of snobs in this hobby, so be prepared for them to be threatened about the is little amp. It's hurting their gravy train.
I have more than one preamp/amp and speakers to evaluate this amp, its that good. I wish audio sounded this good 30 years ago at this price point, I would have saved hundreds of thousands of dollars. This hobby can be dangerous and make you a poor man.
Be careful, 150 dollar hype won't break you and all the upgrades you can get out of this Fosi Audio product, it won't disappoint many and save you some nightmares that I discovered along the audiophile merry go round. I hope this reviews enlightens some folks and saves you from wasting your time/money elsewhere.
I hope Fosi makes a kick ass balanced preamp with at least 2 rca inputs and at least one balanced in and one balanced out.
Thanks Fosi Audio.
d
Wow I’m very pleased these tiny amps are truly amazing , truly giant killers I have pair of Parasound A21 and honestly very hard to hear the difference if at all the difference is that A21 COST 2500.00 so I think we can figure it out . A+++ top notch ! companies have to step up their game up, a huge disrupter in the game now! I am going to tri amp with these amps can’t wait.
J
I replaced the ZA3 stereo opamps with Parkos Labs components and with my vintage speakers, the tonality, precision and stage image changed a lot to my advantage. When I connected HiEnd speakers to it, I was shocked. The sound image of the ZA3 has become brutally more detailed and stronger. the stage is much cleaner and airier.