Campfire Audio
Campfire Audio RELAY Portable USB DAC Amplifier
Best portable DAC for audiophiles seeking high-fidelity sound on the go.
Rediscover your music with the Campfire Audio RELAY Portable USB DAC Amplifier. Expertly engineered for audiophiles on the move, it brings true high-fidelity sound to your smartphone, laptop, or tablet. Featuring a premium AKM 4493SEQ DAC and dual operational amplifiers, the RELAY delivers professional-grade detail, clarity, and dynamic power. Its compact and durable CNC aluminum body ensures reliability, while multiple output options and selectable digital filters allow you to tailor your listening experience. Enjoy exceptional audio quality wherever you go.
$229.00
Owner Satisfaction
4.5
/ 5
Category Rank
410
/ 807
#410 in Headphone Amplifiers
Price vs Category Average
-84%
Below average
DAC Chip
4493
/ AKM SEQ (Japan-made)
Who it's for
- Audiophiles seeking high-resolution clarity and expansive soundscapes
- Commuters needing a durable, pocket-sized audio upgrade
- Listeners using demanding, high-impedance headphones on the go
Who should skip it
- Budget-conscious buyers looking for entry-level portable audio
- Enthusiasts requiring balanced output for their premium cable setups
- Mobile users concerned about smartphone battery longevity
Performance breakdown
Audio Fidelity
The AKM 4493SEQ chip delivers exceptional detail and natural soundstage depth.
Build Quality
CNC aluminum construction provides a premium, rugged feel for daily travel.
Output Versatility
Dual 3.5mm and 4.4mm outputs accommodate a wide range of headphones.
Portability
Compact dimensions make this an effortless addition to any mobile setup.
Gain Flexibility
Switchable gain modes provide necessary power for both sensitive and demanding gear.
Ease of Use
Plug-and-play USB-C connectivity ensures instant high-fidelity audio on any device.
Key Specs
DAC Chip
AKM 4493SEQ (Japan-made)
Body Material
CNC Aluminum
Supported Formats
PCM up to 384kHz / 32bit
Outputs
3.5mm Single-Ended and 4.4mm Balanced
High Gain Output
4 Vrms (Balanced)
Low Gain Output
1.35 Vrms (Single-Ended)
Dimensions
57 × 23 × 10 mm
Amplifier Technology
Solid State
Features
- High-fidelity sound for portable devices
- Premium AKM 4493SEQ DAC for superior audio
- VELVET SOUND™ for natural soundstage
- Switchable Low and High Gain modes
- 3.5mm and 4.4mm headphone outputs
- Six selectable digital filters
- Universal USB-C plug-and-play convenience
- Durable CNC aluminum construction
What customers say
The Campfire Audio RELAY earns high praise for its exceptional sound quality and robust build. Users consistently highlight the pristine sonic performance, noting its clarity and neutral tonality that brings out impressive detail. It successfully delivers the signature dynamic yet refined Campfire sound in a portable dongle format, pairing perfectly with high-end IEMs. The device offers surprisingly strong power output for its size without introducing noise or distortion. Furthermore, the construction feels premium and durable, reinforcing the brand's reputation for craftsmanship. While the price reflects its premium nature, enthusiasts view the RELAY as a definitive upgrade for those prioritizing audio transparency and build excellence over budget options.
Know before you buy
No, the RELAY is a plug-and-play device. It connects via USB-C to your smartphone, tablet, or laptop and is automatically recognized by most operating systems.
No, you should only connect one pair of headphones at a time. Using both outputs simultaneously may damage the device or result in poor audio performance.
The Low Gain mode is optimized for sensitive in-ear monitors to prevent background hiss, while the High Gain mode provides the extra power needed to drive more demanding, full-sized headphones.
These filters allow you to subtly fine-tune the sound profile of your music. You can experiment with them to find the tonal balance that best suits your personal preference or the specific sound signature of your headphones.
The RELAY is powered directly by your host device. While it will consume some battery power, its efficient design is engineered to minimize impact on your phone or laptop's runtime.
Yes, the AKM 4493SEQ chip supports high-resolution PCM audio up to 384kHz/32bit, ensuring you can play back high-fidelity files with professional-grade clarity.
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