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Studio Projects VTB1 Single Channel Variable Tube Microphone Preamplifier

B&H # STVTB1 Mfr # VTB1
In Stock
Free Expedited Shipping
You Pay: $167.26

The Studio Projects VTB-1 is single channel low cost microphone preamplifier, incorporating true class A/B switching. The unit is perfect for the professional and home project studio doing production, broadcast and voice over work.

A "Tube Drive" control allows the user to blend as little or as much of the 12AX7 tube circuitry as required. The VTB-1 can go from a pristine solid state sound, to any combination of Tube Drive, including hard distortion for guitars and bass.

Microphone Preamp
Vocal microphone preamp with warm transparent character that doubles as a Tube DI Box. Discreet, current-source fed, paralleled-transistor balanced input stage feeds a bipolar opamp balanced-unbalanced converter. A dual feedback design provides for low distortion performance while a two stage design provides up to 45dB gain with the second stage contributing up to 15dB gain.
Line Input
FET-input opamp buffer with hi-input impedance to avoid pickup loading when used as an instrument preamp. Second stage provides adjustable gain from 10dB to 30dB with constant hi-impedance maintained.
Hi-pass Filter
75Hz, 3-pole -18dB/oct high-pass filter for low-frequency wind and rumble elimination.
Tube Blend
Constant-level blend control allows the user to smoothly change from an all solid-state path to a tube-based preamp. This allows the user to add the desired amount of tube sound to the signal without having to deal with complicated "tube drive" controls and such. Alternately, it allows the user to use only the solid-state portion of the preamp to get a very low distortion, un-colored sound when desired.
Tube Stage
12AX7 vacuum tube with a DC filament supply for minimum hum and noise. First half of the tube is operated as a high-gain amplifier stage while the second half operates as a cathode follower to minimize loading of the first stage. A low-voltage plate supply is used to create a "starved-tube" condition for enhanced sound.
Output Stage
Bipolar, lo-noise, high output-current opamp used for best performance. The first stage is used to provide 6dB of additional gain and drives the line out jack and pin-2 of the balanced out. The second stage provides signal inversion and drive for pin-3 of the balanced output, effectively providing an additional 6dB of gain.
Number of Channels Single
Inputs 1 x XLR Microphone
1 x 1/4" TRS phone Line (front panel)
1 x 1/4" TRS phone Send/Return (Insert)
Output 1 x XLR
1 x 1/4" TRS phone
Phantom Power +48V
Multi Function No
Gain Range 72dB
Maximum Output Level Not specified by manufacturer
Frequency Response 20Hz to 20kHz, +0/-0.25dB, ref 1kHz
Noise Mic EIN: -128dBu (150 Ohm source, 60dB gain)
Dimensions (WxDxH) 1U half rack space
Weight Not specified by manufacturer
Specialties Microphone impedence switch allows for use with ribbon microphones
Studio Projects VTB1 Single Channel Variable Tube Microphone Preamplifier
  • AC Power Supply
  • One (1) Year Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    Studio ProjectsVTB1 Microphone Preamp
     
    5.0

    (based on 5 reviews)

    Ratings Distribution

    • 5 Stars

       

      (5)

    • 4 Stars

       

      (0)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Good audio (5)
    • Easy to use (4)
    • Versatile (4)
    • Professional functions (3)

    Cons

      Best Uses

      • Home studio (4)
      • Amateur recording (3)
        • Reviewer Profile:
        • Experienced (3)

      Reviewed by 5 customers

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      Displaying reviews 1-5

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      5.0

      Muy bueno

      By Juanca

      from Ecuador

      About Me Professional Musician

      Pros

      • Clear Sound
      • Professional Functions

      Cons

        Best Uses

        • Home Studio

        Comments about Studio Projects VTB1 Microphone Preamp:

        It is the first preamp that I bought for my home studio, I was surprised as went the signal level and clarity of my bass and guitar, I do not regret my decision

        Share this review

         
        5.0

        GREAT PRE

        By cartel

        from deltona fl

        About Me Experienced

        See all my reviews

        Verified Reviewer

        Pros

        • Clear Sound
        • Easy To Use
        • Powerful
        • Professional Functions
        • Versatile

        Cons

          Best Uses

          • Amateur Recording
          • Home Studio

          Comments about Studio Projects VTB1 Microphone Preamp:

          clean....crisp....rich....powerful....it adds a POWERFUL and SILKY SMOOTH tone to your vocals without adding to much COLORATION and completely no HISS or HUM....im happy i chose this model, and im surprised i havent had the urge to attempt to swap tubes, its perfect the way it is

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          5.0

          Excellent Value

          By Nate

          from North Canton, OH

          About Me Experienced

          Verified Buyer

          Pros

          • Clear Sound
          • Easy To Use
          • Versatile

          Cons

            Best Uses

            • Home Studio
            • Performances
            • Professional Recording

            Comments about Studio Projects VTB1 Microphone Preamp:

            I purchased this preamp for use with my guitar rig. I run delay and reverb after my amp mic, and I need an inexpensive preamp to use for live gigs and practice. This preamp sounds fantastic using both an sm57, and an e609. I also had a chance to try it with an inexpensive ribbon mic and it sounded significantly better than a set of apogee preamps, thanks to impedance matching ability of the VTB1. I don't find myself using the tube blend for distortion, since I'm not a huge fan of the starved plate sound, but I do blend some tube in for added warmth. overall this is a great preamp live, or in the studio, and I would recommend it to anyone.

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            5.0

            Great Sound Low Price

            By Sleepy Floyd

            from Orlando,FL

            About Me Novice

            Verified Buyer

            Pros

            • Clear Sound
            • Easy To Use
            • Versatile

            Cons

              Best Uses

              • Amateur Recording
              • Home Studio

              Comments about Studio Projects VTB1 Microphone Preamp:

              Highly recommended for people on a budget. Definately improved the quality of my vocals.

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              5.0

              great preamp, not to pricey

              By float

              from calaveras, ca

              About Me Experienced

              Verified Buyer

              Pros

              • Clear Sound
              • Easy To Use
              • Powerful
              • Professional Functions
              • Versatile

              Cons

                Best Uses

                • Amateur Recording
                • Professional Recording

                Comments about Studio Projects VTB1 Microphone Preamp:

                Nice transparent sound on guitar. Tube blend is a great feature, and the reason I chose this product. I most often use it while miking a guitar amp to add some warmth before it hits my DAW. I look foward to using it on vocals and acoustic guitar.

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                Kopul -  Studio Elite 4000 Series XLR M to XLR F Microphone Cable - 6' (1.8 m), Black
                • You Pay: $17.99
                 

                Additional Hardware

                Studio Projects -  Studio Project Rack Kit
                • You Pay: $29.99
                Usually ships in 7-14 business days ? This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 business days (subject to availability). Your order will be charged at time of shipment.
                 
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