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19" 8-Channel Headphone Amplifier
- Up to 10 mixing paths with a total of 16 headphone outputs
- 2 Discrete stereo inputs with separate level control and stereo outputs
- LED level display with 7 segments / channel and stereo input
- 2 Headphone outputs / channel
- 8 x Independent aux inputs for up to 8 individual stereo mixes
- Input selection and stereo / mono switch per channel
QUICK COMPARISON
PRODUCT |
TOTAL HEADPHONE OUTPUTS
| AUX INPUTS |
INPUT CONNECTIONS
| OUTPUT CONNECTIONS |
HM-4 |
4 |
N/A |
1/4" TRS |
4x 1/4" TRS |
HM-400 |
12 |
Per Channel |
L/R XLR, TRS |
12x 1/4" TRS, L/R LR + TRS |
HM-800 |
16 |
Per Channel |
2x L/R TRS |
16x 1/4" TRS, 2x L/R TRS Pass through |
| The 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
- Width: 80 mm
- Height: 42.5 mm
- Depth: 133 mm
- Accessories (included): belt clip, 1 m 3.5 mm stereo jack cable
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Info
Apogee Groove is the best portable USB DAC and headphone amp for listening to music on your Mac or PC. Groove takes the same high quality audio technology found in the worldʼs most prestigious recording studios and delivers it to your laptop. Connect Groove directly to your computer and connect your headphones or powered speakers directly to Groove. Itʼs that easy. Youʼll be amazed by the difference in sound quality. Highlights: USB 2.0 connection to Mac and PC Up to 24 bit / 192kHz audio ESS Sabre DAC Constant Current Drive?, Ultra-smooth frequency response for any headphones Quad Sum DAC?, 4 DACs per channel for highest dynamic range and lowest distortion Asynchronous clocking Max output level: 225mW into 30 Ohm Multi-color LEDs for status and level indication Powered by USB Top panel buttons for adjusting output level and muting Compact and portable (95mm H x 30mm W x 16mm T) Premium aluminum build quality Built in the USA Pricing to be announced
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MyMONITOR - Personal Headphone Monitor Mixer Overview
Problem: A performer needs to hear him/herself through headphones exclusively or mixed
with the output of a mixer, CD player, tape deck, or other stereo line level source. Only the
mic signal, however, should be going to the main mixer.
Solution: Connect MyMONITOR between the mic and line source, and the mixer. The Mic
and line Monitor levels can then be adjusted for mix and volume through the headphones.
Only the mic signal will go to the board. And since MyMONITOR can be AC or battery powered,
the unit can be used on a large stage or wherever there is no AC outlet nearby. Dynamic or
condenser mics can be used since phantom power would come through the Mic Thru jack from
the mixer or other source.
MyMONITOR - Personal Headphone Monitor Mixer Specifications:
Signal To Noise Ratio 90dB
Gain 15dB (1/4 in), 50dB (XLR)
Maximum Input Level -20dB mic, 40dB Monitor
Output Impedance 10 ohms
Power Requirements 12V DC (Adapter included) or one 9V battery
Phantom Power ON/OFF switch
Power LED indicator
Dimensions 4.5x2.75x1.5 inches (112mm x 72mm x 40mm)
Weight 1.3lb (590g)
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- Distributes the signal of 1 audio source to 4 sets of headphones
- 4 channels with separate level controls and headphone outputs
- All connections via 6.3 mm (1/4“) jacks
- Operation via supplied power unit
| The new HP4 from PreSonus answers the need for a headphone distribution
amplifier with professional specifications in a small package at an affordable
price. The HP4 features four discrete headphone outputs on the front panel
each with its own volume potentiometer and 150mW of amplification per channel.
The HP4 also features adjustment over control room monitors with a separate
volume control, monitor mute switch and mono switch giving you an extremely
powerful monitoring solution at an amazingly low price.
Features
? Four High Power Headphone Outputs
? Ultra loud (150mW per channel)
? Ultra quiet operation
? Musical Wide Dynamic Range
? Control Room Monitor Outputs with Level Control
? Mono or Stereo Operation
? Monitor Mute Switch
? Daisy Chain an Infinite Number of Units
? Compact package
Technical Specifications
Input
TRS Impedance 10K Ohms
Panel Controls
Headphone Level 1 to 12
Monitor / Feed Output -80dB to +10dB
Mono Switch
Monitor / Feed Mute
Power Supply
Type Linear
Input 16VAC/1000mA
Output
TRS Balanced 51 Ohms Impedance
Performance
THD+Noise (Unweighted) 0.002%
Noise Floor -98dB
Signal To Noise >95dB
Power Supply Rejection >98dB
Power 16 Watts
Physical
Weight 5lbs./ 2.3 kg.
Dimensions 5.5 x 5.5 x 1.75
Mounting Max Rack and Universal Rack Tray
Chassis Steel
Panel Brushed Aluminum
Sides Cast Aluminum |
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