Fosi Audio P3
L2 · Documented recordBuy when a compact tube-buffered analogue preamp/headphone role is specifically wanted; skip it when neutral measured performance or digital inputs are required.Budget tube-buffer preamplifier and headphone amplifier with RCA input and Bluetooth 5.1 aptX support.
- System role
- Tube preamplifier / headphone amplifierConfirm the complete connection path
- Documented official version
- No recorded versionNo dated release recorded
- Independent test scope
- No dated SPL test recordedPublished scope and limitations remain separate
- Source checked
- 2026-09-24A source-check date is not a new device test
Updates & issues, along a timeline.
Latest record first. Expand to read the complete documented history.
Firmware & software
No matching public record has been added. This is not proof that no issue or update exists.
Product issues
No matching public record has been added. This is not proof that no issue or update exists.
Complete history: 0 records. Product, brand and update views use the same canonical event identifiers. Event date and source-check date remain distinct.
Where it fits
The verified Tube preamplifier / headphone amplifier role and only the interfaces listed in this record.
Limits: A DAC, streamer, phono stage, speaker amplifier or verified tonal upgrade.
Keep the conditions visible
The decision is about analogue routing, gain and tube ownership, not a generic sound-quality promise.
Full test scope, specifications & owner feedback ↓Full specifications, test scope, existing assessments & owner feedback
SoundPath Lab · Verified product profile
Fosi Audio P3
Budget tube-buffer preamplifier and headphone amplifier with RCA input and Bluetooth 5.1 aptX support.
Verified data
Category-specific specifications
| Brand | Fosi Audio |
|---|---|
| Model | P3 |
| Product category | Tube preamplifier / headphone amplifier |
| Bluetooth | 5.1 QCC3031; aptX/aptX HD/aptX LL/AAC/SBC |
| Inputs | RCA and Bluetooth |
| Outputs | RCA/AUX and 3.5 mm headphone |
| Headphone power | 20 mW at 300 Ω; 150 mW at 32 Ω manufacturer rating |
| Claimed SNR | ≥103 dB |
Unknown fields are not treated as supported. Exact services, firmware behavior and regional availability can change after the checked date.
System fit
Best for / not ideal for
Best for
- Low-cost headphone listening
- Adding Bluetooth to an analogue system
- Users seeking tube-buffer flavor
- Easy-to-drive headphones
Not ideal for
- Demanding planars or insensitive headphones
- Balanced systems
- Users seeking measurement-neutral transparency
SoundPath verdict
What matters beyond the spec sheet
Strengths
- Verified bluetooth data
- Strong functional value for the category
Weaknesses
- Demanding planars or insensitive headphones
- Balanced systems
Biggest limitation
Headphone output is modest for demanding loads and the tube stage is a preference, not an accuracy upgrade.
Best alternative
Fosi ZH3 for a full USB DAC and more capable desktop hub.
Best-value use case
Low-cost headphone listening
Knowledge graph
Reviews, comparisons, guides and risks
Reviews & explainers
No dedicated review is published yet.
Comparisons
No dedicated comparison is published yet.
Guides
Use the System Builder for a complete signal path.
Problems & risks
No model-specific issue page is published; absence of a report is not proof of no issues.
Firmware
Latest known software status
- Latest known version
- See official support page / tracker
- Updated
- Not separately verified
- Last checked
- 2026-08-22
- Notes
- See the official support page and SoundPath firmware tracker before applying an update.
Purchase verification
Available channels
Official channel is listed first. A missing retailer link means the exact model/region was not verified, not that the retailer never carries it.
Member knowledge · editor reviewed
Questions, owner experience and product issues
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