| Content | Precision Headphone Amplifier
- Based on the headphone amplifier section of the Rupert Neve Designs 5060 Centerpiece
- Three switchable inputs (XLR, RCA, mini-jack)
- Solid steel housing
- Output impedance: 0.08 Ohm at 1KHz
- Frequency response: +/- 0.2 dB from 10 to 12,0000 Hz
- Power supply: 24 V via an external 6 W power supply (included) or via battery
- Dimensions (W x D x H): 165 x 117 x 48 mm
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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“.
| 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
| 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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The compact HX-3 Headphone Distribution Amplifier is the perfect accessory to quickly provide three high-performance stereo headphone feeds with individual level controls from line-level sources. The HX-3 can produce very high headphone levels with extremely low noise and distortion.
HX-3 Key Features
Great for radio, television, film, and music production applications, the battery-powered HX-3 accepts balanced XLR line-level inputs or unbalanced 1/4-inch and 1/8-inch stereo inputs. Its 1/4-inch loop-out can connect multiple HX-3's for additional headphone outputs. Headphones are connected to panel-mounted 1/4-inch stereo connectors.
The HX-3 has a durable aluminum chassis to withstand the punishment of field and studio environments. The unit is powered by inexpensive batteries (two-AA) or external 5-18 VDC.
The HX-3 can add headphone outputs to the 552, 302, MixPre-D, MM-1, and USBPre-2.
HX-3 Key Features List - Three isolated headphone outputs with individual volume controls.
- 125 dB dynamic range with flat frequency response.
- Durable 1/4-inch connectors, panel mounted for strength.
- Stereo or mono monitoring.
- Peak LED indicates headphone overload.
- Two balanced XLR line level inputs or unbalanced 1/4-inch and 1/8-inch stereo inputs.
- Loop Output to connect additional HX-3's in series.
- All-metal connectors solidly mounted to the chassis for durability and RF immunity.
- Free from "Pin-1" grounding problems.
- Internal battery-power for up to 18 hours from two AA alkaline batteries.
- Chassis-isolated 5 to 18 VDC input for easy external DC powering.
- Power LED indicates low battery power.
- High strength, extruded aluminum chassis with protective metal end panels.
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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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