Violectric Audio V281 Balanced Headphone Amplifier

Violectric

The HPA V281 was developped with the target to enable ultimate transmission quality for low- , medium- and high-impedance headphones.
Due to its specific, variable, low-noise and low-distortion circuit design especially optimised for dynamic headphones, the HPA V281 fulfils even most sophisticated demands.
HPA V281 is one of the few headphones amps made in Germany offering a balanced headphone output !!
Furthermore HPA V281 offers selectable inputs and an output management.

  • The four built-in amplifiers provide balanced operation of headphones !!

    Connection is made via 4-pin Neutrik XLR connectors.

    Two “standard” headphones may be connected via 1/4" jacks on the front panel.

    This amp may be equipped with one of six different digital inputs:

    Coaxial, Optical or USB with either 24/96 kHz or 24/192 kHz

    Case and back panel are made of aluminium and are Nextel coated.

    The 8 mm frontpanel is black or silver anodized. The labeling is laser engraved.

    • Balanced inputs with gold-plated Neutrik XLR connectors
    • Unbalanced inputs with gold-plated ALPS RCA connectors
    • switchable unbalanced outputs with RCA connectors 
    • optional digital input (USB or Coax or Optical)96 or 192 kHz
    • PRE-GAIN= switchable input gain in five steps
    • Independent-channel design
    • ALPS RK27 High-Grade volume control 
    • High-Quality op-amps in the signal path
    • High-quality MKP capacitors in the signal path
    • 1 and 1% metal film resistors throughout the unit
    • 4 amplifiers with V200 technology
    • 1 balanced headphone output, Neutrik 4-pin, gold plated
    • 2 single ended silver-plated Neutrik headphone outputs
    • Relay-based headphone output cutoff
    • 2 large toroidal transformers
    • Large filtering capacitors in the power supply
    • Switchableground lift
    • Rugged aluminium case with Nextel coating
    • Solid, laser-engraved aluminium front panel
    • Inputs: 2 x XLR female, balanced, 2 x RCA, unbalanced,  1 x digital (Option)
    • input voltage: + 21 dBu
    • Input impedance: 10 kohms
    • Line outputs: 2 x XLR male, balanced, 2 x RCA unbalanced
    • Nominal input sensitivity: +6 dBu
    • Amplifier gain: +8 dB unbal. / 14 dB bal.
    • PRE-GAIN: -12 / -6 / 0 / +6 / +12 dB
    • Frequency range: 5 Hz ... 70 kHz (- 0.5 dB), 3 Hz … 200 kHz (-3 dB)
    • Output impedance: < 0.1 Ohm unbal. / < 0.2 Ohm bal.
    • Damping factor: (Load 50 Ohm): 500 unbal. / 250 bal.
    • Dynamic range: > 129 dB (A-wtd)
    • Noise: < -95 dBu (A-wtd)
    • THD+N (1kHz/2x10V/100R = 1W): < -102 dB / < 0,00079 %
    • THD+N (1kHz/2x4V/32R = 0,5W): < -100 dB / < 0.001 %
    • Crosstalk: -105 dB (1 kHz) / -103 dB (15 kHz)
    • Headphone outputs: 1 x 4-pole XLR, 2 x 1/4“ (6.3 mm) Phone Jack
    • Max Output Level 600 Ohms: 2700mW
    • Max Output Level 100 Ohms: 5600mW
    • Max Output Level 50 Ohms: 4200mW
    • Max Output Level 32 Ohms: 2800mW
    • Max Output Level 15 Ohms: 1500mW
    • Power supply: 230 V AC / 115 VAC  40 VA
    • Case, Front, Back: Aluminum
    • Dimensions: 170 x 112 x 320 mm (B x H x D)