Fosi Audio V3
- 3 reviews
- Fosi Audio
Fosi Audio V3
- 3 reviews
- Fosi Audio
$109.90 $109.00
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Why it stands out
Best for
Not ideal for
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Official product information provided by Fosi Audio
The following product descriptions, specifications and images are provided by the manufacturer.
Description
This Fosi Audio V3 listing is for the V3 Mono compact monoblock power amplifier, sold in single-amp and stereo-pair configurations depending on the selected variant.
Its TPA3255-based architecture, XLR balanced/RCA inputs and 240W rated mono output support scalable, high-power passive-speaker systems.
Why it stands out
Four reasons this product deserves a place in a well-planned audio system.
True Monoblock Architecture
Each V3 Mono amplifies one audio channel, allowing separate left/right amplification in a stereo pair.
XLR Balanced and RCA Inputs
The selectable input formats make integration practical with balanced preamps, DACs and conventional RCA sources.
240W Rated Mono Output
Strong single-channel output supports demanding compatible passive speakers when correctly powered.
Scalable Power Options
Variants include amplifier-only and power-supply bundles, including configurations for one or two monoblocks.
Best for
- Stereo systems using two monoblock amplifiers
- Balanced XLR preamp or DAC systems
- Compact high-power passive-speaker installations
- Users planning a modular amplifier upgrade
Not ideal for
- Buyers expecting one unit to power both stereo channels
- Users without a preamp, DAC or source with volume control
- Headphone or powered-speaker systems
- Buyers who have not checked whether their selected variant includes a power supply
EMiUZEK Buying Notes
- This product is V3 Mono: one amplifier powers one speaker channel; two units are required for conventional stereo.
- Check the selected variant carefully because amplifier quantity and included power supply differ.
- Use a preamp, DAC or source with suitable volume control; V3 Mono is a power amplifier, not a complete source device.
Frequently Asked Questions
Do I need one or two V3 Mono amplifiers?
One unit powers one channel. A standard two-channel stereo system requires two monoblocks.
Does every variant include a power supply?
No. The listing includes amplifier-only and power-supply bundle options; verify the selected variant.
Can it connect to an XLR source?
Yes. It supports balanced XLR input as well as RCA input.
Can it drive headphones?
No. It is a passive-speaker power amplifier and has no headphone output.
Does it include Bluetooth or a DAC?
No. Connect a compatible external preamp, DAC or streamer.
Can I use one 48V/10A supply with two units?
A listed two-amplifier bundle is available with a 48V/10A supply; use only the configuration and cabling supplied or specified for that variant.
HOW TO CONNECT
Balanced stereo system
Source: Balanced DAC / preamp
Connection: XLR to each monoblock
Output: Speaker terminals
Target: One passive speaker per V3 Mono
Note: Use two units for left and right channels.
RCA stereo system
Source: RCA preamp / controlled DAC
Connection: RCA to each monoblock
Output: Speaker terminals
Target: One passive speaker per V3 Mono
Note: Split left and right outputs to separate units.
Single-channel system
Source: Mono source / preamp channel
Connection: XLR or RCA
Output: Speaker terminals
Target: One passive speaker
Note: One unit powers one channel only.
Technical Specifications
Amplifier
| Feature | Specification |
|---|---|
| Product Type | Mono Class D power amplifier |
| Amplifier Chip | TI TPA3255 |
| Rated Output | 240W mono |
| Channels per Unit | 1 |
Connectivity
| Feature | Specification |
|---|---|
| Inputs | XLR balanced; RCA |
| Output | Passive speaker binding posts |
| Input Selection | Balanced / RCA selectable |
| Headphone Output | None |
Power and Design
| Feature | Specification |
|---|---|
| Power Options | Variant-dependent: no PSU, 48V/5A or 48V/10A bundles |
| Cooling | Full-body heat-dissipation chassis |
| System Requirement | Preamp or source with volume control |
Recommended System Setup
| Setup | Connection |
|---|---|
| Balanced stereo | Balanced DAC/preamp → two V3 Mono amps → passive speaker pair |
| RCA stereo | RCA preamp → two V3 Mono amps → passive speaker pair |
| Single channel | Mono line source → one V3 Mono → one passive speaker |
Additional Product Content
| Feature | V3 Mono | ZA3 | V3 Stereo |
|---|---|---|---|
| Amplifier Format | Monoblock | Stereo / mono-capable | Stereo |
| Channels per Unit | 1 | 2 stereo or 1 mono | 2 |
| Amplifier Chip | TPA3255 | TPA3255 | TPA3255 |
| Inputs | XLR balanced, RCA | XLR balanced, RCA | RCA |
| Rated / Maximum Positioning | 240W rated mono | High-power stereo/mono | 300W x2 maximum |
| Stereo Units Required | 2 | 1 in stereo mode | 1 |
| Pre-out | No | Subwoofer output | 3.5mm pre-out |
| Tone Controls | No | No | No |
| Best Use | Dedicated monoblock stereo | Flexible balanced amp | Simple RCA stereo |
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