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V.A.S. Mic pre

The V.A.S. Microphone Preamplifier is a single channel stand-alone device.
It features top of the line performance, key component to achieve this performance level is our new OPA2 discrete audio operational amplifier. As all Fredenstein products, it is not a copy of an older design, but a completely new circuitry manufactured in SMT technology. Matched and integrated dual input transistors guarantee vastly improved specifications compared to older designs. The OPA2, following the tradition of well known manufactures, is socketed and can be exchanged without tools. Another very important sound shaping component is the American-made steel-core output transformer, which has this smooth vintage sound without being dark or just “mid-rangy” and at the same time, the V.A.S. MicPre is very quiet.
A 100 KOhms high impedance direct input is located on the front-panel, it accepts balanced and unbalanced signals, the rear microphone input is automatically disconnected when a plug is inserted in the DI connector.
For added versatility, a hybrid headphone amplifier with separate volume control is integrated to allow precise monitoring.
With the optional rack mount kit, two V.A.S. devices can be mounted together to form a 19 inch 1U enclosure
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Specification

Frequency Response:     20 Hz – 20,000 Hz, +/- 1 dB
Distortion:                            < 0.05 % at +4 dBu output level
Input Noise:                         < -127 dB
Gain Range:                         0 db to 65 db (using Pad)
Input Impedance:             > 1500 Ohms or 300 Ohms selectable
Low Cut:                                60 Hz (switchable)
DI Impedance:                    > 100K Ohms
Max. Input Level:               + 24 dBu, Pad activated
Output Impedance:          600 Ohms
Max. Output Level:          + 26 dBu
PAD:                                         - 20 dB (switchable)
Mains Voltage:                    90 VAC to 240 VAC, 50 – 60 H

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