Elevate your audio experience with the LD Systems HPA 4, a robust 4-channel headphone amplifier designed for versatility in stage, studio, and home recording settings. This compact powerhouse is perfect for wired in-ear monitoring, ensuring precision and clarity without compromise. Housed in a rugged steel-plate enclosure, the HPA 4 promises durability while maintaining an ergonomic design that's easy to integrate into any setup.

The HPA 4 features four adjustable headphone outputs, each delivering up to 100 mW of power with no distortion, thanks to its reliable external 24V DC power supply. The rear panel is equipped with both stereo RCA and 1/4" TRS inputs, giving you diverse connectivity options and allowing seamless integration with your existing gear. For added flexibility, the switchable mono/stereo function lets you tailor your monitoring experience to your specific needs.

On the front panel, you'll find four 1/4" headphone outputs, each with its own rotary volume control, allowing for personalized sound levels for each user. A green LED power indicator ensures you're always aware of the unit's operational status, keeping you in control at all times.

Key Features:

• 4-channel headphone amplifier
• Max output power: 4x 100 mW per channel
• Rugged steel-plate housing for durability
• Stereo RCA and 1/4" TRS inputs
• Switchable mono/stereo monitoring
• Includes external 24V DC power supply
• Individual volume controls for each headphone output
• Green LED power indicator

Owner's manual

Product specs

FAQs

How many headphones can the LD Systems HPA 4 power simultaneously?

The LD Systems HPA 4 can power up to four headphones simultaneously, thanks to its four stereo channels.

Can I adjust the output level for each channel on the LD Systems HPA 4?

Yes, the LD Systems HPA 4 allows for individual output level adjustment for each of its four channels.

Does the LD Systems HPA 4 support multiple input sources?

The LD Systems HPA 4 has two input options, allowing you to connect multiple audio sources.

Is the LD Systems HPA 4 suitable for rack mounting?

No, the LD Systems HPA 4 is not designed for rack mounting; it is a standalone unit.

What type of musicians or audio professionals would benefit from the LD Systems HPA 4?

The LD Systems HPA 4 is ideal for studio environments where multiple users need to monitor audio simultaneously, such as recording sessions or group listening setups.