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Built to deliver versatile and premium sound quality in a compact, desktop form-factor, the Niimbus US 5 Pro Headphone Amplifier from Violectric is a powerful, 2-channel audiophile headphone amplifier with both amp and pre-amp functions and enough power to drive any sized headphones, including dynamics, planars, and active loudspeakers. This handmade amp sports a 100% analog circuit and hand-selected components for uncompromising sound, and the wide ranging I/O ensures you can easily connect to any device, in any way you see fit, from RCA and XLR inputs, to 1/4", RCA, XLR, and 4.4mm outputs, all selectable from the front panel.
The high damping factor makes the US 5 Pro an ideal choice for difficult to drive headphones, and the ultralow-noise operation pairs well with the oversized, high-voltage power supply to provide incredible detail and optimal performance on low-impedance headphones. With it's quad amplifier that delivers far more power than most demanding headphones require, and its compact metal chassis, the US 5 Pro is an ideal choice for any home studio, professional podcasting setup, or expansive home entertainment system.
- Two Balanced XLR 3-pin inputs (left and right)
- Four unbalanced RCA inputs (left and right)
- Two balanced XLR 3-pin line outputs (left and right)
- Two unbalanced RCA outputs (left and right)
- Balanced XLR 4-pin headphone output
- Two unbalanced 1/4" headphone outputs
- Balanced 4.4mm headphone output
- Onboard volume and balance control
- Push buttons for input and output connector selection
- Monitoring of headphone output based on DC and overload
- Adaptation of line-out signal to the connected devices in the range of ±12 dB
- Rear-panel DIP switches for controlling pre-amp and output amp gain from -12 to +12 dB
- Solid aluminum infrared remote control
- Delayed activation with power-on and immediate separation during power-off
- DC, overload, and thermal protections
- 100% analog signal path
- Black anodized aluminum front and rear panel
- 2mm sheet steel chassis with metallic coating
- Remote control milled from a solid piece of aluminum
- 60V internal operating voltage for high-impedance headphones with high-output voltage swing
- 256-step volume control via relay and motorized balance control knob
- Four powerful amps offering up to 7000mW max
- Two oversized, toroidal transformers with more than 50,000 uF filter capacity
- Handmade in Germany
Specifications
| Number of Headphone Channels |
2-Channel
|
| Recommended Headphone Impedance |
4 to 600 Ohms
|
| Headphone Output Power |
7000 mW into 50 Ohms (0.01% THD, 1 kHz)
|
| EQ |
No
|
| Display |
No
|
| Analog Audio I/O |
4 x RCA Coaxial Unbalanced Line Input (2 Stereo Pair, Rear Panel)
2 x XLR 3-Pin Balanced Line Input (1 Stereo Pair, Rear Panel) 2 x RCA Coaxial Unbalanced Line Output (1 Stereo Pair, Rear Panel) 1 x 4.4 mm TRS Balanced Stereo Headphone Output (Front Panel) 2 x 1/4" TRS Unbalanced Stereo Headphone Output (Front Panel) 2 x XLR 3-Pin Balanced Line Output (1 Stereo Pair, Rear Panel) 1 x XLR 4-Pin Balanced Stereo Headphone Output (Front Panel) |
| Digital Audio I/O |
No
|
| Network I/O |
No
|
| USB |
No
|
| Frequency Response |
5 Hz to 250 kHz ±0.5 dB
|
| Maximum Input Level |
Line:
+21 dBu (10 Kilohm Input Impedance) |
| Maximum Output Level |
+21 dBu (1 Ohm Input Impedance)
|
| Dynamic Range |
> 135 dB (A-Weighted)
|
| Impedance |
Outputs:
0.1 Ohm (Unbalanced) 0.2 Ohm (Balanced) |
| THD+N |
< -104 dB / < 0.00063% (At 1 kHz/2 x 10V/100R = 1W)
< -103 dB / < 0.00071% (At 1 kHz/2 x 4V/32R = 0.5W) |
| SNR |
> 129 dB (A-Weighted)
|
| Noise |
< -104 dBu (A-Weighted)
|
| Crosstalk |
-105 dB (1 kHz)
-103 dB (15 kHz) |
| Damping Factor |
500 at 50 Ohms (Unbalanced)
250 at 50 Ohms (Balanced) |
| Power Requirements |
AC Input
|
| AC Input Power |
115 to 230 VAC, 50 / 60 Hz (T 1 A)
|
| Ground Lift |
No
|
| AC/DC Power Adapter |
No
|
| Power Consumption |
50 VA (Maximum)
|
| Dimensions |
13.8 x 9.8 x 2.3" / 35.1 x 24.8 x 5.9 cm (Chassis Only)
|
| Package Weight |
17.515 lb
|
| Box Dimensions (LxWxH) |
18.7 x 15 x 6"
|
Receive 43995 points when buying this product!
Available Online
Usually 1-2 weeks before shipment
Not In-Store
In case of additional delays, you will be contacted by one of our sales representative.
Any questions? We are here to help.

