Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip - Fosi Audio

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
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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

Flawless XLR Balanced Input Support

Delivers pure sound, initiating a high-definition auditory adventure with unmatched clarity.

PBTL Mono Mode Support

More power output to elevate your stereo HiFi system to new heights.
Home Audio System
XLR Input
Monoblock

TI TPA3255 Amp Chip Integrated​

Enabling superior sound and ultra-low distortion across the audio band with Class-D efficiency.

Advanced Heat Dissipation Design

Enhanced cooling with larger chassis, whole-body heatsink, and side ventilation with dust covers.

Swappable Op-Amps

Compatible with DIP8 dual op-amps. Roll them to get your preferred sound signature.

Separated Digital & Analog Modules

Optimized circuit board layout protects core audio modules from interference for a purer sound.

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
  • ZA3 Power Amplifier x 1

Customer Reviews

Based on 124 reviews
88%
(109)
10%
(12)
2%
(3)
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E
Eduardo Fernandez

Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip

H
Hani
fantastic amp

I recently refoamed my 22 year old Denmark made XTi20 and XTi100. purchased the cables as well from Fosi. hooked them up, turned on the power, and ran a streamer with dac. The sound, ease of power was beyond anything ive expected for the size and price.

F
Frederick Fronda
The Best of Class D amps

Sold out on launched day only proves how good this amp is! Bought 5 units of this to be distributed to friends cause am confident this amp will make them happy.

D
Devin P.
ZA3 with Bookshelf speakers and sub out Amp

I'm pleasantly surprised by the performance of this amp. Before I was powering my bookshelf speakers with the MC 101 by Fosi, which is no slouch. But the sound stage and presence that I'm getting with the ZA3 is next level. The mid range is fuller, and the sub out is much better at providing a signal to my sub amp. And as a result my subwoofers play louder, deeper, and much cleaner. I'm absolutely delighted by this amp.

F
Frans S
Fosi did it again!

I have the v3 and since a few weeks the za3 both with Sparkos opamps. The v3 sounds a bit mellow compare with the sound of the za3. The za3 is more a brighter sounding amp. It takes at least 30 hours break in time before you experience the real sound. I just ordered also the muses02 to see what that will do with the za3. Fosi is doing a great job with those little amps. I love it. The delivery process is flawless and if there is any question the response time is fast. Thanks Fosi!

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