Professional Monitoring · B2B Supply
EMPX Portable Professional Monitor Headphone Amplifier
Portable monitoring for stage, studio, rehearsal and mobile audio workflows.
The EMPX is a compact professional monitor headphone amplifier designed for performers, musicians, recording engineers, rehearsal rooms and mobile audio users. It combines professional analog connectivity, high-resolution USB-C OTG digital audio, clear left/right level monitoring and direct hardware controls in a lightweight belt-clip design.
Why Professional Buyers Choose EMPX
- 4× amplification and +10 dB gain for headphones from 16 Ω to 100 Ω
- XLR mono / 6.35 mm stereo combo input for stage and studio sources
- USB-C OTG digital audio up to 24-bit/192 kHz
- Separate 5V IN power input for clear, reliable setup
- Selectable stereo and mono monitoring modes
- Full-color L/R level display for real-time signal confirmation
- 3.5 mm stereo TRS headphone output
- Built-in 3.7V lithium-ion battery and integrated belt clip
- Graphite gray and silver white finishes
- Wholesale, distribution and OEM/private-label support
One Combo Input, Two Professional Workflows
The combo input accepts XLR mono sources commonly used in live performance and 6.35 mm stereo sources used in monitoring and studio systems. This reduces adapter requirements and allows one compact unit to cover more applications.
Clear L/R Level Monitoring
The color display provides immediate visual confirmation of left and right signal levels and the selected operating mode. It is easy to read in a dark venue, rehearsal room or studio and helps users identify signal activity before putting on their headphones.
Stereo / Mono Mode Selection
Stereo mode retains the full left/right programme information for music, recording and stereo monitoring. Mono mode provides a centered monitoring feed for mono sources and common live-performance workflows. The mode can be selected directly on the unit without an app.
24-bit / 192 kHz OTG Digital Audio
The USB-C OTG connection supports digital audio up to 24-bit/192 kHz from compatible phones and computers.
Important: The OTG port is for digital audio only and cannot supply power. Use the separate port marked 5V IN for power.
Portable Hardware for Real-World Use
The EMPX measures 107 × 40 × 30 mm and weighs 135 g. Its built-in 3.7V lithium-ion battery and integrated belt clip make it suitable for performers, musicians and mobile users who need monitoring close at hand.
Complete Technical Specifications
| Specification | Value |
| Model | EMPX |
| Product type | Portable professional monitor headphone amplifier |
| Amplification gain | 4× / +10 dB |
| Analog input | 1 × XLR mono / 6.35 mm stereo combo |
| Headphone output | 3.5 mm stereo TRS |
| Digital audio input | USB-C OTG, up to 24-bit/192 kHz |
| OTG power capability | None — digital audio only |
| Power input | Separate 5V IN port |
| Frequency response | 20 Hz–20 kHz |
| Input impedance | XLR 20 kΩ / TRS 10 kΩ |
| Output power | 115 mW × 2 @ 16 Ω · 74 mW × 2 @ 32 Ω · 48 mW × 2 @ 62 Ω · 36 mW × 2 @ 100 Ω |
| Total harmonic distortion | <0.8% |
| Noise floor | ≥ −70 dB |
| Monitoring modes | Stereo / Mono |
| Display | Full-color L/R level and mode display |
| Battery | Built-in 3.7V lithium-ion battery |
| Dimensions / net weight | 107 × 40 × 30 mm / 135 g |
| Materials / colors | ABS + metal / graphite gray or silver white |
| Compliance stated in product materials | CE / FCC / UKCA / RoHS |
Standard Package Contents
- EMPX headphone amplifier × 1
- 6.35 mm to 3.5 mm adapter × 1
- USB charging cable × 1
- USB-C data cable × 1
- Carry pouch × 1
Applications
Live stage and personal monitoring · Recording-studio headphone monitoring · Rehearsal and instrument practice · Mobile digital-audio monitoring · Professional audio retail and distribution · OEM/private-label programmes
Frequently Asked Questions
Can the EMPX OTG port power the amplifier?
No. The USB-C OTG port carries digital audio only. Use the separate 5V IN port for power.
What digital audio resolution does the EMPX support?
Up to 24-bit/192 kHz through a compatible USB-C OTG connection.
Does the EMPX accept both XLR and 6.35 mm input?
Yes. The combo input accepts XLR mono sources and 6.35 mm stereo sources.
What headphones can the EMPX drive?
Published output figures cover 16–100 Ω headphones, from 115 mW × 2 at 16 Ω to 36 mW × 2 at 100 Ω.
Can users switch between stereo and mono?
Yes. Stereo and mono modes can be selected directly on the amplifier.
Is the EMPX available for wholesale and OEM orders?
Yes. Send your destination market, expected quantity, sales channel and branding requirements for current pricing, MOQ, samples and lead-time information.
Wholesale and OEM Support
Contact ELEGAUDIO for current specifications, sample availability, quantity-tier pricing, MOQ, lead time, packaging details and OEM/private-label options. Include your destination country, application and expected order quantity for a faster quotation.
