Fosi Audio ZA3 Balanced Stereo Amplifier

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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

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.

KUPID

DALI KUPID is a compact, stylish speaker that blends effortlessly into your home - and delivers powerful, true Hi-Fi sound. With bold colours and soft, rounded edges, it adds personality to any space. Backed by DALI’s advanced acoustic engineering, KUPID brings rich detail and clarity to your everyday listening experience.

Designed to Fit In. Built to Stand Out

DALI KUPID combines affordability, high-quality sound, and compact design to fit in anywhere and still stand out sonically.

Don't Let the Size Fool You

Treat your ears to crystal-clear highs and rich, room-filling lows - all from a compact speaker that lets you feel every note, thanks to DALI’s signature sound design.

Legendary Sound

When you listen to DALI KUPID, you're experiencing over 40 years of DALI loudspeaker design and manufacturing, distilled into its purest form.

Styled for Your Life.

KUPID is compact, bold and easy to place. With eye-catching colours and versatile mounting, it fits your space and style.

COMPACT HI-FI. BIG SOUND.

Designed to fit in. Built to stand out

Sleek and compact, DALI KUPID is built for you who love great sound but want something that fits effortlessly into any space on a modest budget. Whether it's your main system or a second setup in the garage or vacation home, KUPID delivers full and refined sound. Designed to fit in. Built to stand out.

MUSIC TO YOUR EARS

Don't let the size fool you

Don’t let the small size fool you - KUPID fills your room with rich, powerful sound that pulls you into the music. Whether it’s the crisp snap of a drum or the depth of a bassline, every detail is delivered with stunning clarity. No matter what you listen to - or where you place it - you’ll get an immersive Hi-Fi experience that feels far bigger than the speaker looks.

LEGENDARY SOUND

Decades of passion built into every note.

With KUPID, you benefit from the same trusted DALI Sound Design Principles, in-house engineering and expert craftsmanship that have defined our speakers for over 40 years - including our premium models! When you listen, you’ll notice it’s something special - delivering a sound experience that’s beyond what you might expect from a speaker this size.

STYLED FOR YOUR LIFE

Real Hi-Fi that fits into your lifestyle

KUPID is designed to blend into your home - or stand out with personality. Its ultra-compact size makes placement effortless, whether on a shelf, in furniture, or mounted on the wall with the included bracket. And with a bold colour palette and elegant curves, it adds a playful edge to any of your rooms. Thanks to clever acoustic engineering, it sounds fantastic no matter where you put it - proving that serious sound doesn’t need serious space.

ENGINEERED FOR BIG SOUND

Compact design. True Hi-Fi technology.

At the heart of KUPID is a 4½-inch low-loss bass/midrange driver that delivers rich, detailed depth with effortless control. Paired with a high-performance 26 mm soft dome tweeter, it ensures crystal-clear highs and an expansive soundstage. The dual flare bass reflex port adds powerful, dynamic bass while reducing turbulence for a cleaner performance. Completing the system, custom-designed crossovers fine-tune the balance between drivers, keeping every note natural, precise, and immersive.

Specifications Fosi Audio ZA3-48V
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

Specifications Dali Kupid
Frequency range 63 – 25,000 Hz ±3 dB
Sensitivity 83 dB @ 1 m for 2.83 V
Nominal impedance 4 Ohm
Maximum SPL 103 dB
Crossover frequency 2,100 Hz
Crossover principle 2-way
Recommended amplifier power 40 - 120 Watt
High frequency driver 1 × 26 mm soft dome
High frequency diaphragm Soft woven fabric
Low/Mid frequency driver(s) 1 × 4½ inch
Low/Mid frequency diaphragm Paper and wood fibre cone
Connection input Single wire
Enclosure type Bass reflex
Bass reflex tuning frequency 53 Hz
Recommended placement Stand/shelf/wall
Recommended distance from rear wall 2.5 - 60 cm 1 - 23.6 inches
Dimensions (H × W × D) 245 x 150 x 198 mm 9.64 x 5.91 x 7.80 inches
Weight incl. grille 2.9 kg 6.4 lb
Shipping weight 7.5 kg (pair) 16.5 lb (pair)
Finishes Black Ash
Dark Walnut
Caramel White
Golden Yellow
Chilly Blue
Accessories (Included) 
2 × Wall brackets
4 × Wall bracket screws
8 × Rubber feet
2 × Front grilles