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Fredenstein F601A 500 Series Microphone Preamp

High performance 500 series microphone preamplifier with choice of use of input transformer and output transformer, each with a switch gain compensated for easy comparisons
MFR# F601A

Product Description

The Fredenstein F601A is a versatile high performance professional microphone preamplifier. It is the only mic-pre that allows the engineer to choose whether to use the input transformer, as well as, whether to use the output transformer. Each has a switch and is gain compensated for easy comparisons.

The premium Lundahl transformers used are very transparent, which means these switches only tend to have a subtle sonic effect and whichever combination is choosen the performance is always exceptional. Often the benefits of transformers relate to noise rejection and galvanic isolation but with some penalty in absolute distortion and frequency response, but with Lundahls, the benefits can be useful and the penalties tend to be very minimal.

The F601A uses a fully discrete Class A gain stage with an innovative zero-negative feedback design. This improves low frequency and transient reproduction dramatically and delivers detailed high frequency information without being harsh. This preamplifier has been described as truly silky, smooth and warm and yet, tends to be very fast and detailed.

Controls include; Gain (0 to 78 dB[!]), Input Impedance (1000 or 300 ohm), Low Cut Filter (60 Hz), Phantom Power and Polarity. It also has a front panel DI Input for instruments. Output level is displayed with a conventional VU meter.

Behind the front panel, controlling gain and other functions, the F601A incorporates a few dozen high quality sealed relays controlled by a 32 bit MCU. If placed in a Fredenstein Bento 6D or 10D, settings will be automatically displayed on the Bento's LCD display which makes accurate recalls a breeze. It also means better matching when multiple F601A's are used for stereo or surround.

The F601A's very low noise, intrinsically low distortion and wide frequency response will provide exceptional sonic results. It outperforms “classic” microphone preamplifiers by a wide margin. This isn't your grandfather's mic pre.

Product Specifications

Condition New
Channels Single-Channel
Chassis Module
Module Type 500 Series
Module Slot Count 1 Slot

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
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In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
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This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
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The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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