The V.A.S. Microphone Preamplifier is a single channel stand-alone device with top-of-the-line studio performance. A key component in achieving its stringent audio specifications is the OPA2 discrete audio operational amplifier.
It is not a copy of an older design, but rather a completely new circuit. Matched and integrated dual input transistors guarantee improves on specifications compared to older designs. The OPA2, following the tradition of well known manufactures, is socketed and can be exchanged without tools, and the industry standard pin-out makes it compatible with most manufacturers.
Another important sound-shaping component is the American-made steel-core output transformer, which has a smooth vintage sound without being dark or overly present in the midrange. And at the same time, the V.A.S. MicPre is very quiet. A 100K Ohm high-impedance direct input is located on the front panel. It accepts balanced and unbalanced signals, and the rear microphone input is automatically disconnected when a plug is inserted in the DI connector.
Other features include a maximum gain of 65 dB, Output-Level Control, a 20 dB Pad, switchable polarity, selectable input impedance, switchable Low-Cut filter, and Phantom-Power support. Fredenstien's new eight LED Peak-Meter with a 50 dB range gives the user a precise reading of the operating conditions.
For added versatility, a hybrid headphone amplifier with separate volume control is integrated to allow precise monitoring. The balanced input and the balanced output are available on XLR and TRS connectors. An unbalanced insert is also provided to connect effect equipment.
With the optional rack mount kit, two V.A.S. devices can be mounted together to form a 19" 1U enclosure (table feet need to be removed). For easy touring and recording around the world, the V.A.S. MicPre has a built-in universal power supply ranging from 90VAC to 240VAC, 50-60 Hz.
As is the case with all Fredenstein products, the V.A.S. MicPre is designed by a German-American team and manufactured in Taiwan.