Violectric HPA V281 Headphone Amplifier [2nd-hand]

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2nd Hand

2nd hand product in excellent conditions, original box, 1Y warranty.

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1 520,00 €

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Description

The HPA V281 was developed 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.

LOW-NOISE
because of low internal gain.
Therefore the self generated noise from the amplifer is not audible.

HIGH OUTPUT VOLTAGE
through 60 Volt internal operating voltage.
Therefore best suited for high impedance headphones.
Over 90 % of all headphone amplifiers in the market offer not half that voltage !!

HIGH OUTPUT POWER
because of powerful amplifiers able to deliver much more current a headphone needs.
Therefore best suited for low impedance headphones and even magnetostatic cans !!

HIGH DAMPING FACTOR
through lowest output impedance.
Therefore best suited for full control even over critical headphones with the garantee to have flatest possible response.

Features:
- Balanced inputs with gold-plated Neutrik XLR connectors
- Unbalanced inputs with gold-plated RCA connectors
- Balanced line outputs with gold plated XLR connectors
- Unbalanced line outputs with gold plated RCA connectors
- Line outputs assignable to be with fixed or variable level
- 6 optional digital audio inputs 24 Bit / 96 or 192 kHz
- 3 switchable inputs with dedicated buttons on the front
- PRE-GAIN = switchable input gain in five steps
- Independent channel design
- ALPS RK27 High-Grade motorized volume control
- ALPS RK27 High Grade balance control
- High-Quality op-amps in the signal path
- High-quality MKP capacitors in the signal path
- 0.1 and 1% metal film resistors throughout the unit
- Discrete-design power amp with 16 transistors per channel
- 4 amplifiers for true balanced headphone output
- 2 silver-plated Neutrik headphone outputs
- 1 gold plated Neutrik 4-pin XLR output
- Relay-based headphone output cut- off with delayed switch-on
- output management with dedicated buttons on the front: line outputs active, headphone outputs active, both active, both off (Mute)
- 2 x Large toroidal transformer (15 + 25 W)
- Large filtering capacitors in the power supply (36.000 uF)
- Switchable ground lift
- Rugged aluminium case with Nextel coating
- Solid, laser-engraved aluminium front panel

The inputs and outputs are situated on the rear panel, they are equipped with electronically balanced gold plated XLR connectors and unbalanced gold plated RCA connectors.
This amp may be additionally equipped with one of six different digital inputs: Coaxial, optical or USB with either 24/96 kHz or 24/192 kHz.
Balanced and unbalanced line outputs on the rear panel. These can be set to have fixed output level (mirrored from the input) or variable output level from the volume control.
Volume control is provided with a high-grade ALPS RK 27 pot with a large full metal rotary knob.
Additionally a balance control serves to correct the stereo image.
V281 incorporates 4 times the award winning famous 16-transistor (per channel) amps from V200 for a smooth and relaxed sound stage und true balanced headphone outputs.
The output management enables the amp to act as your personal preamp when desired.
Feel free to activate the headphones outputs or the line outputs independently from each other with dedicated buttons on the front panel.
Lots of protection circuits will care for the safe operation of your headphones. Two headphones may be connected via 1/4" jacks on the front panel.
One balanced headphone may be connected via a 4-pin XLR socket on the front panel.
Case and back panel are made of aluminium and are Nextel coated.
The 8 mm aluminium frontpanel is milled, sand blasted and silver anodized.

Technical Data
All Measurements RMS unwtd., 20 Hz - 20 kHz, Pre-Gain set to 0 dB
Inputs: 2 x XLR female, balanced / 2 x RCA, unbalanced / 1 x digital (Option)
Max. 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-pol XLR / 2 x 1/4“ (6.3 mm) Phone Jack
Max output level (1kHz / 0,1% THD+N):
> 40,2 V.eff on 600 ohms = 2700 mW
> 23,7 V.eff on 100 ohms = 5600 mW
> 14,5 V.eff on 50 ohms = 4200 mW
> 9,5 V.eff on 32 ohms = 2800 mW
> 4,9 V.eff on 16 ohms = 1500 mW

Power supply: 230 V AC / 115 VAC max. 40 VA
Case, Front, Back: Aluminum
Dimensions: 170 x 112 x 320 mm (B x H x D)

Available versions:

a) Volume control manual
The base model comes with an Alps RK27 potentiometer which is a solid choice, commonly found on many nicer headphone amps.

b) Remote Controlled with motor pot
The first upgrade adds a motorized version of that same Alps RK27 potentiometer together with a remote control.

c) Remote Controlled with 128-step relay attenuator
Going one step further, the Alps RK27 is replaced with a custom made 128-step relay-based unit, with .75dB intervals between each step. This one is also motorized and uses the same remote. This version "produces the best channel balance, step precision, absence of distortion, and minimized crosstalk." Sound improvements in transparency and focus.

 
Designer

Introduction to Violectric

... is a trademark and product line of Lake People electronic GmbH. Lake People electronic GmbH develops, manufactures and distributes products in the professional range, for broadcast, television, airports, exhibition halls, festival venues, theatres, large-scale installations, private studios and more. In the private sector as well, Lake People products become increasingly popular due to their outstanding quality.
The Violectric trademark and product line is specially intended to supply the Hi-Fi and High-End market with its specific requirements.

Who develops Violectric equipment?

Violectric devices are exclusively developed in Germany by the engineers of Lake People electronic GmbH. In doing so, the team of developers can draw on twenty years of experience and countless products for the pro-audio domain.

Who manufactures Violectric equipment?

Violectric devices are exclusively manufactured in Germany by Lake People electronic GmbH or contractors in the company's vicinity. Lake People - and by association Violectric - put high emphasis on domestic manufacturing. As well, all component suppliers are chosen in order achieve the main part of added value inland.


Introduction to Lake People

Established in 1986, we have since become your partner for professional audio electronics. Following our motto “tools - not toys”, we achieved highest reputation during the past years amongst our customers. These are private studios, broadcasters and TV companies. Also airports, congress and exhibition centres count on the reliability of our products made in Germany. This all began under the roof of Rosgartenstrasse 13 in the city of Konstanz. Here, three young guys started with the development and manufacture of limiters and noise gates but not too successfully in the beginning. The commercial survival on a very low level was made possible by the production of headphone amplifiers. From 1989 on, the production range was extended to level matching and balancing amplifiers such successfully, that it came essential to move to larger premises.

Since 1991, the new address read: Haidelmoosweg 52. Due to the developement of the first german 20-bit A/D and D/A converters in the beginning nineties, the name Lake People resounded throughout the land. Suddenly, the company was regarded as a high-tech brand, with a highly positive effect on its public reputation. The growing know-how led to many new products in the analog and digital domain during the following years. Although some projects turned out to be flops, most devices met the customers' requirements, with the effect of continuous growth of the company. By the end of the nineties the 140 m² of Haidelmoosweg 52 went cramping.
Again, a move to new premises came necessary. As it was obvious that rental facilities would not meet the demands, we decided to put up our own building. The company site was constructed in 2000 in a new industrial park in Konstanz, Turmstrasse 7a, just a hundred metres from the lake. Also in 2000, Lake People was transformed into a Ltd. company.

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Violectric HPA V281 Headphone Amplifier [2nd-hand]

2nd hand product in excellent conditions, original box, 1Y warranty.

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