General - Violectric HPA V281 User Manual

GENERAL INFORMATION
The HPA V281 is a stereophonic headphone amplifier designed to drive
low-, medium- and high-Z loads (16...600 ohms) as usually represented
by high-quality headphones.
Because of its 4 built in amplifiers and the 4-pin XLR socket on the front
it is also suited to connect balanced headphones.
Due to its specific, variable and low-noise and distortion circuit design
especially optimised for dynamic headphones, the HPA V281 fulfils
even highest demands.
Features:
Balanced inputs with gold-plated Neutrik XLR connectors
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- Unbalanced inputs with gold-plated premium RCA connectors
Digital input as an option, coaxial, optical, USB, up to 192 kHz
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- inputs selectable on the front panel
PRE-GAIN = switchable input gain in five steps
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- Balanced and unbalanced line outputs with RCA resp. XLR sockets,
gold plated, pre-post fader assignable
- Independent-channel design
- ALPS RK27 High-Grade volume control
Remote controlled and motorized volume control, input/output selection,
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mute as an option
High-Quality op-amps in the signal path
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- High-quality MKP capacitors in the signal path
0.1 and 1% metal film resistors throughout the unit
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- 4 Discrete-design power amps with 8 transistors per channel
Output management: headphones active /
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line-out active / both active / none active (mute)
- 2 silver-plated Neutrik headphone outputs
1 4-pin XLR socket, gold plated for balanced headphones
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- delayed relay-based headphone output cut-off
2 x Toroidal transformers, 25 + 15 W
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- Large filtering capacitors in the power supply (36.000 uF)
Switchable ground lift
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Rugged aluminium case with Nextel coating
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- Solid, laser-engraved aluminium front panel
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