General - Violectric HPA V181 User Manual

GENERAL INFORMATION
The HPA V181 is a stereophonic headphone amplifier designed to drive
low-, medium- and high-Z loads (16...600 ohms) as usually represented
by high-quality headphones.
V181 contains four amplifiers (2 x stereo) to enable proper driving of
balanced headphones.
Due to its specific, variable and low-noise and distortion circuit design
especially optimised for dynamic headphones, the HPA V181 fulfils
even highest demands.
Features:
Balanced inputs with gold-plated Neutrik XLR connectors
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- Unbalanced inputs with gold-plated ALPS cinch connectors
switchable unbalanced outputs with cinch connectors
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- PRE-GAIN = switchable input gain in five steps
Independent-channel design
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DC-coupled (switchable)
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ALPS RK27 High-Grade volume control
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High-Quality op-amps in the signal path
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High-quality MKP capacitors in the signal path
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0.1 and 1% metal film resistors throughout the unit
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- 4 amplifiers with BUF634
- 1 balanced headphone output, Neutrik 4-pin, gold plated
2 silver-plated Neutrik headphone outputs
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Relay-based headphone output cutoff
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Toroidal transformer
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Large filtering capacitors in the power supply
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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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The HPA V181 is equipped with internal filters to prevent damage to the
connected headphones due to high-frequency overload beyond the
audible range.
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