Fosi AudioZA3 Balanced Stereo/Mono Amplifier HiFi with TPA3255 Chips, Mini Audio Amp Monoblock with XLR RCA Inputs and 12V Trigger-in for Desktop Bookshelf Passive Speakers with 48V5A Power Supply
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Fosi AudioZA3 Balanced Stereo/Mono Amplifier HiFi with TPA3255 Chips, Mini Audio Amp Monoblock with XLR RCA Inputs and 12V Trigger-in for Desktop Bookshelf Passive Speakers with 48V5A Power Supply

4.6/5
Product ID: 593574160
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Details

  • Item dimensions L x W x H
    15.5 x 18.4 x
  • Voltage
    48 Volts
  • Manufacturer
    Fosi Audio
  • Maximum supply voltage
    48 Volts
  • Minimum supply voltage
    230 Volts
🔊235W max power (Mono mode)
🔗Balanced XLR/TRS combo input
❄️Advanced heat dissipation system

Description

🎧 Power your passion with precision and style!

  • CUSTOMIZABLE SOUND TUNING - Swap op-amps to personalize your audio signature and stand out in your audiophile circle.
  • NEXT LEVEL COOLING DESIGN - Enhanced chassis ventilation and dust covers keep your amp running cool during marathon listening sessions.
  • DUAL MODE POWER FLEXIBILITY - Switch effortlessly between 180W stereo and 235W mono modes for tailored sound intensity.
  • AUDIOPHILE APPROVED COMPONENTS - TPA3255 chip with premium Japanese and German parts ensures ultra-low distortion and high fidelity.
  • PRO GRADE BALANCED CONNECTIVITY - XLR and 1/4" TRS inputs minimize noise, delivering pristine audio clarity.

The Fosi Audio ZA3 is a compact yet powerful Class-D amplifier featuring dual stereo/mono modes with up to 235W output, balanced XLR/TRS inputs for noise-free connectivity, and premium audiophile components. Its advanced heat dissipation and customizable op-amp rolling make it a versatile choice for desktop or bookshelf passive speakers, delivering professional-grade sound clarity and flexible integration.

Specifications

ManufacturerFosi Audio
Part numberZA3
Item Weight1.75 kg
Product Dimensions15.49 x 18.39 x 5.08 cm; 1.75 kg
Item model numberZA3
ColourBlack
MaterialAluminium
Voltage48 Volts
Wattage235 watts
Item Package Quantity1
Plug profileSurface Mount
Specification metFCC
Batteries included?No
Batteries Required?No

Have a Question? See What Others Asked

Is it possible to use the trigger out from the Fosi Audio ZD3 to two pieces of ZA3 amplifiers?
How to set up a system using two ZA3 units in mono mode?
ZA3 recommendations for replacing op-amps in mono mode?
No front light on ZA3 though there is light on the ac adapter.
The power on LED light on my ZA3 is dead.

Reviews

4.6

All from verified purchases

C**R

Audiophile Quality

Seriously good. This little powerhouse isn't just clean sounding, accurate and a true audiophile performer, it is also exceptionally good value if you don't care about brand image and loads of knobs. It is demonstrably better than any other amp I have used that have including 'high end' kit from Quad, Musical Fidelity, Marantz, Cambridge Audio and Sugden to name a few. I'm using 6 ohm speakers and this beauty just sounds exquisitely poised. Depending on the source the mid range is so rich and imaging holographic. I'm now thinking I need to change my (expensive) desktop amp which sounds decidedly 'meh' by comparison, and get another ZA3. The psu and the amp itself gets barely warm in use I am very hopeful that thanks to clever design and high quality components that it will last a very long time. Congratulations to the Fosi team.

A**R

Breakthrough products with balanced XLR inputs and dual amplifier chips.

So...in my opinion...this is were Class D now defeats Class A-B amplifiers.I have these with the ZD3 - running in mono. The installed NE5532 op amps in the ZA3's are ok but after doing research I found the best op amps that are inexpensive. The LM 4562 Op Amps...provide stunning clarity and resolution. Even without this modification..the ZA3 is a truly innovative product.The ZA3 has dual amplification chips...not a single unit. This provides the greater resolution and fidelity.The ZD3 already has these installed and the resolution is superb.Don't forget the ZA3 has balanced XLR inputs..which is class leading in terms of inputs. In such a small unit !The sound is so refined and detailed.Buy yourself a power supply filter for your wall sockets and some ferrite cores and this further improves detail for any sound system.I did buy a second ZA3 - added the LM 4562's of which 3 are required for left - right & XLR input. 5 - if you have a subwoofer.The 12v trigger is so convenient...just by a good length 3.5 jack splitter cable to control both ZA3's with the remote.So I purchased the extra ZA3 and upgraded to mono. Each dual amp chip in each ZA3 - now controls one speaker - providing greater power and detail. I'd say it has boosted speaker detail and power delivery by 40%.What's interesting is that this isn't just about volume/gain...it increases depth and detail greatly. Is it necessary? No.Other amps in Class D - have only one amplifier chip and can't match the resolution of the ZA3. What's interesting...if you check vastly more expensive amps - check what op amps they are using. Very often it is the standard NE 5532's or OPA.The LM 4562 chips are sort of a hidden gem in op amps...fast and detailed and the fosi ZA3 is hardware compatible with their greater resolution and depth. It's only £10 for two chips...but make sure they are genuine.I have wharfdale 9.1 diamond speakers...and for the first time..I modded the crossover to film foil capacitors which I didn't think I would be capable of doing. Just takes a little time and I have never soldered before...but I gave it a go and it improved the quality of output greatly.The ZA3 is a power efficent and small device with just about everything you'd want for a high end audio system.I think it is a genius product that is vastly underrated. Even prestigious audiophiles are using the ZA3 in mono configuration.

B**L

Cheap but impressive.

What a great little amp. I have had a few expensive HiFI set ups in my life, but now that I have downsized, I wanted something smaller. This, when hooked up the the WiiM Ultra that I also bought recently and a good pair of bookshelf speakers (Dali), sounds way more impressive than it should. The fact that I can use this as a mono or stereo is something I've never come across before, and that opens up its versatility even more. Recommended for those looking for a less expensive, but still good quality, amplifier base.

M**.

Fantastic amp. Great price. Brilliant performance

Hi. Absolutely fantastic amp. I have it connected to 20 year old mission m762i speakers. Sounds fantastic. Great bass and treble and mid too! Even on tricky to plat bass heavy tracks. Beyond my expectationsCheersQuick update - i bought another one and use then to power left and right speakers in stereo mode. The difference is amazing both in terms of Clarity and power.

J**N

Edit: Excellent, and not just for the money

Second edit: Fosi Audio saw my message below and has contacted me to offer a free replacement without me having to ship the other one back. Really good customer service.Warning: Everything I wrote below is true, but now I'm having scratchy noises while adjusting volume, just like an elderly amp with an analogue pot. Not sure how to get it fixed without shipping to China. Extremely disappointed.I got one of the first batch of these, so I've had it now since December. From the moment I hooked it up to my desktop system (usb out from computer, Dragonfly Red as a dac, Q Acoustics 3020s, REL TZero subwoofer) I was blown away. It has a rich, natural sound that reminded me very much of old Class A analogue, but cleaner. Notes have body and weight and presence, and it throws up a big soundstage with very precise placement of instruments and vocalists. I can easily say it sounds better than amps I might have spent over £1,000 on 10 years ago.There are a couple of annoying things about it, however. I'm not fond of using a volume knob as a power switch, and I hate having the stereo/mono switch in a place it could accidentally be knocked, though that's never happened in my case. (It seems a lot of people are really enamoured with the idea of using two of these as monoblocks, but I don't have that kind of power requirements.) Honestly, it's hard to imagine being able to use more power than it already has with the 48v brick unless you live in a detached house and have a very large listening room or very hard-to-drive speakers.This is a fantastic little bit of kit, and I've had a few through the door as I was working out which I liked best (Marantz PM6007, Aiyima D03 and A07, SMSL AO200 MKII, Topping PA5 II). None of them could quite match it. The Topping comes very, very close and would easily be my second choice because it's so beautifully clean and doesn't put a foot wrong. I just think I like a slightly meatier amp with a touch of warmth, and that's the ZA3. If you're after a less warm sound or if your speakers are really lacking in high end, I might go with the Topping, which also deserves a lot of praise.I listen to it every day, and I'm still shaking my head at how something so cheap could sound so good. I'm not sure if this is a sign I've been exposed to too much audiophile snake oil over the years or if the quality and implementation of Class D amps has just come astonishgly far in that time.I'll also add that the build quality is great, and it looks extremely nice in person.

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TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Fosi Audioza3 Balanced Stereo Mono Amplifier Hifi With Tpa3255 Chips | Desertcart LEBANON