DescriptionThe LD Systems HPA 1 is a versatile headphone amplifier with high power output for stage, studio and home recording and is the perfect solution for wired in-ear-monitoring.. The compact device in a rugged, ergonomically shaped plastic housing with soft-touch surface and practical belt clip is very extensively equipped.
In addition to locking XLR connectors for the stereo signal L/R input, the HPA 1 has a balanced 3.5 mm stereo jack as AUX input, which can be used in parallel for clicks or playback. It is protected for safe operation against excessive input levels; a hollow pin socket with negative internal contact enables the connection of a network adapter for fixed operation.
A 3.5 mm stereo jack is provided as earphone and headphone output. Volume level and balance can be set with easy-grip knobs, a push-button switches between the summed mono and stereo signals. A full-fledged limiter is integrated for distortion-free playback and as protection against feedback.
The LD Systems HPA 1 has bi-colour LEDs to facilitate the features overview, which displays the response of the limiter during peaks and the battery status. At 165 grams, the headphone amplifier is distinctly light-weight and can be operated for up to 12 hours thanks to a high quality 9 V block battery.
Model Name: LDHPA1
Product Type: headphone amplifier
Type: 1-channel stereo
Inputs: Main Input (Stereo), 1 x Aux In (Stereo)
Input Connections: XLR-F (L + R Input, balanced), 3.5 mm stereo jack (Aux In)
Input Impedance: 6 kOhm (XLR In), 10 kOhm (3.5 mm jack)
Input Sensitivity: 3 dBu (XLR In), -6 dBV (3.5 mm jack)
Max. Input Level: 16 dBu (XLR In), 7 dBV (3.5 mm jack)
Protection Circuits: Audio Limiter, Max. Input leveling, Power OFF -Mute relay
Headphone Outputs: 1
Headphone Output Connectors: 3.5 mm stereo jack
Power Output: 2 x 1.65 Vrms / 1% THD 33 Ohm Load
Minimal Connected Impedance per Channel: 16 ohms
Frequency Response: 20 Hz - 40,000 Hz
THD 1 kHz Sine: 0.04%
Controls: Power/Volume, Balance L/R, Stereo/Mono (Focus) switch,
Indicators: Signal (Green) / Peak (Amber), Battery (low battery: red) / Power LED (Power ON: green)
Power Supply: 9 V DC block battery, DC jack
Operating Voltage: 9 V DC
Power Consumption: Nom. 70 mA / Max. 150 mA
Housing Material: plastic
Housing Surface: soft-touch
Housing Colour: black
Accessories (included): belt clip
Width: 80 mm
Height: 42.5 mm
Depth: 133 mm
Delivery & Returns
This is offered on all products regardless of order value to all mainland UK postcodes. Your purchase will be with you within 3 working days of your order being placed.
If you are in the Scottish Highlands, Northern Ireland, Isle of Man and the Channel Isles you will still get free delivery but your order may take up to 5 working days to get to you.
I need my products quickly- can you help?
Absolutely! At check out you can select the option that suits you best.
We offer Next day, Saturday, Pre-10am and Pre-12pm delivery.
Unfortunately these options are not yet available for customers in the Scottish Highliands, Northern Ireland, Isle of Man and the Channel Isles.
When is the cut off for Next day delivery?
If you place your order before 2pm Monday- Friday, we will dispatch the same day.
Our returns department aims to help you as quickly as possible with any issues you may have with your product.
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