The black HPA 1 by LD Systems is a headphone amplifier with high-power output for use in stage, studio, and home recording applications. It is an ideal solution for wired in-ear monitoring, and the compact design is ergonomically shaped with a rugged plastic housing. The HPA 1 has a soft-touch surface and a belt clip that can attach to the talent during a performance. 

It has locking XLR connectors for the stereo signal L/R input and a 3.5mm stereo AUX input, which can be used for playback or click. A 3.5mm stereo jack is provided as a headphone output. It has a push-button switch to select between a summed mono or stereo signals. The HPA 1 provides a built-in limiter that can give you protection against feedback and an optimal playback signal. The headphone amplifier is lightweight and can operate for up to 12 hours using a 9V battery (not included) or a 9 VDC power supply (available separately).

Compact Headphone Amplifier    Ideal for Wired In-Ear Monitoring    Balanced XLR Inputs    3.5mm Aux Input for Playback    Volume and Balance Controllers    Built-In Limiter and Feedback Protection    Soft-Touch Surface Housing    Belt Clip for On-Body Operation

Related Questions and Answers

Q: 1. Will this lens work with a Canon M50, assuming you have the adapter?

A: This lens can be used with the Canon EOS M50 by way of the Canon EF-M Lens Adapter Kit for Canon EF / EF-S Lenses B&H # CALA MFR # 6098B002. https://bhpho.to/30dls9g

Q: 2. Bring parasol?

A: Please email us at photo@a href= http://bhphoto.com target= _blank bhphoto.com/a for assistance with your inquiry.

Q: 3. Is this lens compatible with a Minolta Maxxum 5 35mm film camera?

A: This lens is designed for digital cameras and will not be compatible with a 35mm format film camera.

Q: 4. is this lens compatible with a D5000 nikon?

A: The Tamron 70-300mm lens for Nikon is fully compatible with the D5000, yes.

Q: 5. How do I attach this lens to a Sony slt a77ii??

A: Hi--that lens is compatible with the SLT A77 II--you don't need anything else to mount the lens to that camera.

Q: 6. Hi there, is this compatible with a Canon 600D?

A: Yes, it's compatible with any Canon EF-S lens mount, which after a quick google search is the lens mount on the Canon 600D.

Q: 7. Will this lens work with a Nikon D40X?

A: This Tamron AF 70-300mm f/4-5.6 Di LD Macro Lens made for the Nikon SLR system incorporates a motor built into the lens itself, which gives it the capability to autofocus with all Nikon DSLR cameras (including the D40 and D40x).

Q: 8. Can i use this on my Canon Rebel T5?

A: Yes you can. The Rebel T5 is compatible with any Canon EOS autofocus lenses or lenses made for the EOS system by other manufacturers.

Q: 9. Is this compatible with sony a68?

A: Yes this lens can work with the Sony A68.

Q: 10. Hi I am looking for 70 -300 lance VR for nikon D90 in 150- 190 $ range . Can u recommend the most optimized for outdoor and landscape purposes?

A: Unfortunately, there is no image stabilized option in your listed price range. The closest telephoto zoom lens to your price range that has image stabilization would be the Nikon AF-S DX VR Zoom-NIKKOR 55-200mm f/4-5.6G IF-ED Lens, B&H # NI5520045GAF.