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The A-Designs MP-1A is a classic 1-channel tube mic pre based on the celebrated MP-1. It offers the same true tube in/tube out design, plus the same quality that made the MP-1 and MP-2 the buzz of the professional audio industry. New features include a -20 db pad switch, 2 selectable tone switches for 4 possible tones, plus 60dB of gain (perfect for next generation ribbon mics). Classic features include a world-class Jensen input transformer coupled with a custom wound output transformer to deliver the low noise and top quality sound that you demand from a high-end mic pre.

Additional features include a balanced combo XLR/1/4" input, and a true VU meter, along with phantom and phase switches, and a front panel line level input jack. Experience the rich, full spectrum of sound that the MP-1A delivers to live performances and recordings. The MP-1A is the perfect match for today's demanding artists.

A-Designs MP-1A Mono Tube Microphone Preamplifier Features:

  • All True Tube Design
  • EF86 Input Tubes
  • 6N1P Output Tubes
  • Jensen Input Transformers
  • Custom Wound Output Transformers
  • VU Meters
  • Level Controls
  • -20dB Pad Switch
  • Polarity Switch
  • Phase Switch
  • Two Selectable Tone Switches
  • Custom Milled Face Plate
  • Solid Vented Metal Frame
  • 2RU
  • Toroid Power Transformer
  • XLR Input Connectors
  • XLR Output Connectors
  • 1/4 Inch Direct Injects
  • High Gain (60 dB)
  • ÿ

The MP-1A is the perfect match for today's demanding artists, order yours now. We guarantee you'll be very favorably impressed.

A-Designs MP-1A Mono Tube Microphone Preamplifier Specifications:

  • Input Impedance:
  • 1.4k Ohm
  • Gain Range:
  • 60 dB
  • Noise (EIN):
  • -128 dB
  • Mic Phantom Power:
  • 48 Volt, Switchable
  • Mic Input Phase:
  • 0-180ø Switchable
  • Instrument Jack Input:
  • rear XLR / front 1/4"
  • Input Impedance:
  • Min > 100k Ohm
  • Balanced Output:
  • XLR
  • Output Impedance:
  • 600 Ohm Switchable to 10k
  • Maximum Level:
  • +22 dBu
  • Output:
  • Low-Z, transformer-balanced
  • Frequency Response:
  • 28 Hz - 60k Hz
  • Distortion (THD):
  • > .08 @ 1 Khz
  • Power Requirements:
  • 100/120/230 VAC - 42 Watts
  • Dimensions:
  • (W x H x D)
  • 19" x 3.5" x 10"
  • 482 x 89 x 254 mm
  • Weight:
  • 18 lbs.ÿ (6.8 kg)
  • Shipping Weight:
  • 20 lbsÿÿ (7.7 kg)
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A-Designs MP-1A Mono Tube Microphone Preamplifier

We're sorry, this product has been discontinued.

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