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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 |
The PHDA02 - a reference class headphone amplifier with Stereo, Mono, and Dual Mono operation modes.
In Stereo mode, the L/R input signal is fed to the left and right earphones while the volume level is set by the Stereo/Left control. The front panel inputs provide simultaneous connection of two headphones in parallel. In Mono mode, the left and right channels are summed, and the resulting mono signal is fed to both the left and right earphones. Again, volume is governed by the Stereo/Left control. In Dual Mono mode, the left and right channels can be used independently with individual level controls for the left and right earphones.
The PHDA02 operates with all headphones with an impedance of 8 up to 200 Ohms. Impedance matching is achieved by a specially designed switchable transformer. Uncommon and costly, this solution provides superior performance, dynamic range, and signal-to-noise ratio at all loads.
Combo input sockets allow for balanced XLR and unbalanced TS headphone connection while parallel XLR outputs facilitate daisy chaining multiple units. The integrated power supply operates with mains from 100 VAC to 240 VAC.
The PHDA02 is equipped with low-noise op amps, and the output amplifiers' discrete power transistors are mounted on heatsinks. Dimensions are 1 U 9.5“.
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Dimensions:79.5 x 75.5 x 15.5mm
Weight: 40g
Controls: Gain, Tone, Volume; STANDBY/ON/FX switch
Terminals: Phone Jack/AUX In Jack |
Overview
With Sennheiserʼs HDVD 800, sound is perfect. The HDVD 800 is able to connect with digital sources and is equipped with a high-quality Burr-Brown digital/analog converter (DAC) that converts digital audio data into analog signals with a resolution of 24 bits and a sampling rate of up to 192 kHz. This enables the HDVD 800 to transmit the entire frequency spectrum of high-end audio sources without any loss of frequencies.
In addition to the symmetrical inputs, the HDVD 800 also has an asymmetrical input socket; incoming signals are symmetrized before further processing takes place. Digital sources can be connected to the rear of the unit via an XLR (AES/EBU) input, optical and coaxial (S/PDIF) digital inputs or USB. All digital inputs accept signals up to 24 bit at 192 KHz*. Designed and manufactured in Germany, this high-end, solid-state amplifier harmonize perfectly and deliver an ultimate acoustic performance when paired with any of Sennheiserʼs audiophile headphones.
Features
D/A transducer for all common formats up to 24 bit / 192 kHz
D/A transducer can be used for CD and DVD players
AES/BU, S/PDIF, USB inputs
Symmetrical (XLR) and asymmetrical (RCA) analog inputs
Symmetrical output
Sockets for four sets of headphones (two of which symmetrical)
| LDHPA6 6-Channel Rackmount Headphone Amplifier
The LD Systems HPA 6 is a highly flexible 1U 19" rack format headphone amplifier with 6 fully independent channels and comprehensive features for a wide range of professional audio monitoring applications.
Each channel provides a 6.3 mm TRS headphone output on the front panel with level control, mono/stereo switching, discrete left/right muting and a 6.3 mm TRS Aux input with Main/Aux balance control for mixing in further signal sources. Four-segment LED meters permit visual output level monitoring, and two 6.3 mm TRS outputs per channel on the rear allow for connecting a total of 18 headphones.
The HPA 6\'s main section features a master level control with eight-segment LED metering and 6.3 mm TRS input to mix in an additional source with all channels. The rear panel provides the main stereo inputs on balanced XLR and 6.3 mm TRS connectors and stereo outputs for daisy chaining multiple units.
- Type: 6-channel
- Inputs: Main Input (Stereo), Direct In (Stereo), 6 x Aux In (Stereo)
- Input Connections: XLR and 6.3 mm jack L&R (Main Input, balanced), 6.3 mm stereo jack (Direct In), 6.3 mm stereo jack (Aux In)
- Input Impedance: 13 kOhm
- Line Outputs: Main Output (stereo, balanced)
- Line Output Connectors: XLR and 6.3 mm jack L&R
- Headphone Outputs: 6 x 3
- Headphone Output Connectors: 6.3 mm stereo jack
- Power Output: 6 x 125 mW
- Minimal Connected Impedance per Channel: 8 ohms
- Frequency Response: 20 Hz - 20.000 Hz
- Controls: Main Input Level, 6 x Input Mix Main/Aux, 6 x Headphone Level, 6 x Mono Switch, 6 x Mute L&R, Power
- Indicators: Main Input/Direct In Level Meter (8-segment LED chain), 6 x channel level meter (4-segment LED chain), 6 x mono LED, 6 x Mute L&R LEDs, Power LED
- Power Supply: IEC power socket
- Operating Voltage: 220 - 240 V AC, 50 - 60 Hz / 110 - 120 V AC, 50 - 60 Hz
- Power Consumption: 40 W
- Cabinet Material: metal
- Cabinet Surface: painted
- Width: 483 mm
- Height: 44 mm
- Depth: 217 mm
- Accessories (included): power cord
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- All-passive volume control circuit
- Stereo and AUX inputs
- Dual outputs
- Additional mono output
- Balanced and unbalanced connection
- Integrated high quality headphone amplifier
- Mono, mute and PFL switches
- Stereo volume, AUX and headphone level controls
- Elegant design with solid wood side panels
- Built to last
The Palmer Monicon® L is a precise, analogue volume control that connects between a computer or audio interface and active monitor speakers. The switch is completely passive and distortion-free, the LED displays and built-in headphone amplifier are powered via the included power supply.
Symmetric combo sockets serve as stereo input. The Monicon® L’s AUX input features RCA sockets and a 3.5 mm stereo jack. The compact console offers outputs for two monitor pairs and a mono summed output via XLR sockets. The stereo or AUX input can be selected alternately, the two outputs individually and together. In addition to its large volume controller, the Monicon® L is also equipped with mono, mute and PFL switches, a 6.35 mm headphone output, and separate AUX and headphone controllers for convenient operation.
Product type
Other Studio and Recording Equipment
Channels
2
Inputs
2
Input connectors
3.5 mm TRS , RCA , XLR
Input type
balanced/unbalanced (depending on TS/TRS connection)
Max. input level
20 dBu
Input impedance
(balanced) 10k Ohm(s) , (unbalanced) 5k Ohm(s)
Outputs
3
Output connectors
XLR
Output type
balanced/unbalanced (depending on TS/TRS connection)
Max. output level
20 dBu
Output impedance
600 Ohm(s)
Frequency response
10 - 40000 Hz
THD
0.001 %
Max. attenuation
(Attenuator + Mute) 112 dB , (Attenuator) 85 dB
Controls
attenuation , input selector , mono , mute , output selector , PFL source
Cabinet material
sheet steel , wood
Cabinet surface
Powder coated
Width
218 mm
Height
77 mm
Depth
100 mm
Weight
1,14 kg |
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