| Content | LD Sytems HPA 4 - a compact and powerful headphone amplifier
The LDHPA4 has small dimensions, can handle up to 4 headphones and has an output power with no equal in its class. That means high volume with no distortion. With these features the LDHPA4 is an essential tool for every project- and home studio.
Specifications
Product type
Headphone Amp:
Inputs
2
Input connectors
6.3 mm TRS , RCA
Input impedance
1 k Ohm(s)
Outputs
2
Output connectors
6.3 mm Jack
Power output
4 x 100 mW
Minimum connected impedance
10 Ohm(s)
Frequency response
20 - 20.000 Hz
Controls
4 x headphone volume , Mono/stereo switch
Indicators
Power
Operating voltage
External Power Supply
Operating voltage
24 V DC
Cabinet material
metal
Cabinet surface
painted
Width
94 mm
Height
48 mm
Depth
82 mm
Weight
0,27 kg
Accessories (included)
power supply |
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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HeadAMP - Four Output Stereo Headphone Amp Overview
Most home recordings involve from one to four people, any or all of whom are
going to need headphone monitoring. The monitor amp would be connected
to the tape deck?s headphone output or a mixer output so that the performers
can hear themselves and each other. Of course the same application can apply
to band rehearsals and even home entertainment. HeadAMP provides amplification
and individual volume control for up to 4 headsets. It can be driven by either line-
level or headphone amplifier signals (mono or stereo).
HeadAMP - Four Output Stereo Headphone Amp Specifications:
Signal To Noise Ratio >90dB
IMD (SMPTE) 0.01%
Maximum Input Level +14dBV
Maximum Output Level 20dB per channel
Output Impedance 51 Ohms per channel
Output Connectors Four stereo 1/4? headphone outputs
Power Requirements 12V DC (Adapter included)
Total Harmonic Distortion | In-ear monitor amplifier for personal monitor applications. High power and \"drummer proof\" headphones output. Dual XLR inputs allow for 2-channel mono or stereo operation. Switchable stereo/mono operation with mix function. Level and Balance/Mix controls. Runs up to 12 hours on a 9 V battery (not included). Integrated current limit protects your ears and headphone. Convenient belt-pack clip included. Mounts easily on a standard mic stand with 5/8” and 3/8” thread.
| Brand |
BEHRINGER |
| Model |
P1 |
| Part Number |
000-AZM |
| Mixing Channels |
2 |
| Warranty |
1 Year |
| Application |
Portable PA |
| Series |
P series |
| 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 | Palmer Monicon, and the volume is right!
With Palmer Monicon, your monitor volume is always under control. The passive mini-mixer with the oversized control is inserted between the stereo output of the notebook, PC or interface and an active monitor system and thus permits convenient and precise volume control of the monitors from the workstation. The passive circuitry with only a few components has absolutely no affect on the sound. Mute and mono buttons make it possible to mute the outputs and merge the stereo output signal into a mono master signal.
The inputs and outputs of the controller are equipped with XLR connectors and the 3.5mm stereo TRS sockets usually found on computers. Combo input sockets also permit connection with 6.3 mm TRS plugs. Thus the Palmer Monicon is compatible with both professional and consumer equipment. Genuine wood sides make the practical studio tool in its massive powder-coated sheet steel housing an elegant looking "little helper" that is a typical Palmer product.
- Type: passive
- Number of channels: 2
- Number of inputs: 2
- Input connections: XLR Combo / 3.5mm stereo jack
- Input type: balanced/unbalanced
- Maximum input level: +20 dBu
- Input impedance: 10 kohms balanced/ 5 kohms unbalanced
- Number of outputs: 2
- Output connections: XLR/m, 3.5 mm stereo jack
- Output type: balanced/unbalanced
- Max output level: +20 dBu
- Output impedance: 600 ohms
- Frequency response: 10Hz - 40 kHz +/- 1 dB
- THD: 0,001 %
- Max. attenuation: 85 dB (attenuator), 112 dB (attenuator + mute)
- Controls: Attenuation, Mute, Mono
- Housing material: sheet steel/wood
- Housing surface: powder-coated
- Width: 164 mm
- Height: 62 mm
- Depth: 85 mm
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