Midas 501 High-Performance 500 Series Microphone Preamplifier

Midas 501 High-Performance 500 Series Microphone Preamplifier

Midas 501 High-Performance 500 Series Microphone Preamplifier

B&H # MICPREAMP501 MFR # MICPREAMPLIFIER501
Midas 501 High-Performance 500 Series Microphone Preamplifier

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Product Highlights

  • Upgraded Version of Midas Mic Amp Design
  • Low-Noise Discrete Input Transistors
  • Soft-Clip Coloration on Overload
  • Includes High-Pass and Low-Pass Filters
  • 31-Segment Precision Rotary Meters
  • Electronic & Transformer Balanced Output
  • Warm Switch for Authentic Vintage Sound
  • 48V + Mute + Phase Flip Switches
  • Up to +80 dB of Gain
  • Limited 10-Year Warranty
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This item is noncancelable and nonreturnable.

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Midas MICPREAMPLIFIER501 overview

  • 1Description

Building upon the success of the Midas 502 Preamp, the Midas 501 High-Performance Microphone Preamplifier is a 500-series module offering professional microphone and line pre-amplification in a compact format for live sound and professional recording environments. The 501 has been upgraded via implementation of low-noise octal discrete input transistors, which provide sonic flexibility, broad dynamic control, and remarkably transparent sonic performance.

The Midas 501's overload tolerant input can handle up to +24 dB of input gain with no pad requirement, while featuring soft-clipping characteristics that provide crystal-clear audiophile reproduction with the right amount of harmonics. The 501 features dual balanced outputs with the default electronically-balanced output 1 providing an extremely clean signal, even when operating at high signal levels, while the transformer-balanced output 2 provides galvanic isolation and generates a more vintage sound, becoming saturated at lower frequencies to add color when driven hard. Both outputs are available simultaneously, offering flexibility in signal routing.

Other notable features include the precision LED I/O metering, which utilizes twin 31-segment rotary LED meters, fully variable high- and low-pass filters with toggle switches to completely remove or add them to the signal chain, and the Warm function, which reconfigures the input stage with a high-quality transformer for lower input impedance and authentic vintage sound. The Midas 501 also includes toggle switches for mute, phantom power (+48V), and phase reversal.

Note: 500-Series modules require a power supply and enclosure (sold separately).

  • Ultra-high performance microphone/line/DI preamplifier offers you outstanding signal integrity
  • Upgraded version of the award-winning MIDAS mic amp design
  • Low noise octal discrete input transistors provide exceptional sonic flexibility and dynamic control
  • Input allows up to +24 dBu signal levels with no pad and gives you our signature soft-clip coloration on overload
  • Remarkable Warm feature reconfigures the input stage with a premium input transformer for lower input impedance and authentic vintage sound
  • Separate high-performance DI input through secondary rack connector and easy-access front panel switch let you effortlessly change between mic and instrument
  • Twin circular 31-segment meters with precision full-wave rectifiers for unprecedented visibility into your input and output levels for professional signal monitoring
  • A distinct fusion of vintage and modern design with anodized fascia, metal controls, and 4 genuine gold-plated rings
  • Separate discrete transformer and electronically balanced outputs provide a splitter function and give you a choice of sonic character
  • High-accuracy Mil-Spec rotary switch gain and output gain trim controls give you a combined mic input gain range of -20 to +80 dB
  • Fully variable high- and low-pass wide spectrum filters with independent selection switches let you perfectly sculpt the frequency spectrum to your exact preference
  • Front-panel toggle switches for easy-to-use control over input select, filters, +48 V, polarity, output mute, and Warm mode
  • Protective auto-mute feature guards against accidental unwanted noise from input switching in live and studio applications
  • Premium quality components throughout, including high-end op-amps, micro melf resistors, and discrete FET's, designed to provide you with the highest form of signal integrity

 

UPC: 748252183545
In the Box
Midas 501 High-Performance 500 Series Microphone Preamplifier
  • Limited 10-Year Warranty
  • Table of Contents
    • 1Description

    Midas MICPREAMPLIFIER501 specs

    Controls Input Select: Mic/DI switch (relay)
    Phantom Power: 48 V switch (discrete FET switched)
    Input Gain, Mic/Line: 12 position rotary switch, 0 to 60 dB
    Input Gain, DI: 12 position rotary switch, 0 to 40 dB
    Polarity: 0/180° switch (discrete FET)
    Low Pass Filter: In/out switch (discrete FET), frequency knob
    High Pass Filter: In/out switch (discrete FET), frequency knob
    Output Trim: ±20 dB knob, fully variable
    Warm (Input Transformer): In/out switch (relay)
    Mute: In/out switch (discrete FET)
     
    Inputs and Outputs Lower Numbered Module Input: Mono, balanced mic or line
    Higher Numbered Module Input: Mono, balanced DI (Hi-Z)
    Lower Numbered Module Output: Mono, transformer balanced
    Higher Numbered Module Output: Mono, electronically balanced
    Noise Noise, 22 Hz to 22 kHz unweighted, Transformer Output

    Mic/Line/DI Noise at Unity Gain, 150 Ohm Source (Warm Disabled): -98 dBu
    Mic/Line/DI Noise at Unity Gain, 150 Ohm Source (Warm Enabled): -102 dBu
    Mic EIN Noise at +60 dB Gain, 150 Ohm Source (Warm Disabled): -128 dBu
    Mic EIN Noise at +60 dB Gain, 50 Ohm Source (Warm Disabled): -130 dBu
    Mic EIN Noise at +60 dB Gain, 50 Ohm Source (Warm Enabled): -125 dBu
    Noise When Muted:  -105 dBu
    CMRR CMRR, 1 kHz, Transformer Output

    Mic/Line Input at Unity Gain (Warm Disabled): Typically -70 dBu
    Mic/Line Input at Unity Gain (Warm Enabled): Typically -100 dBu
    DI Input at Unity Gain (Warm Disabled): Typically -60 dBu
    DI Input at Unity Gain (Warm Enabled): Typically -90 dBu
    Mic Input at +60 dB Gain (Warm Disabled): Typically -90 dBu
    Mic Input at +60 dB Gain (Warm Enabled): Typically -115 dBu
    Input Impedance Input Impedance, 1 kHz

    Mic/Line Input (Warm Disabled): 10 kOhms
    Mic/Line Input (Warm Enabled) 1.5 kOhms
    DI Input (Warm Disabled or Enabled) 1 MOhm
    Frequency Response Frequency Response, +0 dB/-1 dB, Transformer Output

    Mic/Line/DI Input at Unity Gain (Warm Disabled): 20 Hz to 30 kHz
    Mic/Line/DI Unity at Unity gain (Warm Enabled): 20 Hz to 30 kHz
    Mic Input at +60 dB Gain (Warm Disabled): 20 Hz to 30 kHz
    Mic Input at +60 dB Gain (Warm Enabled): 20 Hz to 30 kHz
     
    Distortion Mic/Line/DI Input at Unity Gain (Warm Disabled) Transformer Output: <0.01 %
    Mic/Line/DI Input at Unity Gain (Warm Enabled) Transformer Output: <0.01 %
    Mic/Line/DI Input at Unity Gain (Warm Disabled) Electronic Output: <0.005 %
    Mic/Line/DI Input at Unity Gain (Warm Enabled) Electronic Output: <0.01 %
    Mic Input at +60 dB Gain (Warm Disabled): <0.04 %
    Mic Input at +60 dB Gain (Warm Enabled): <0.08 %
    Maximum Input Level Mic/Line/DI Input at Minimum Gain (Warm Disabled): +24 dBu, 1 kHz
    Mic/Line/DI Input at Minimum Gain (Warm Enabled): +18 dBu, 1 kHz
    Maximum Output Level Transformer and Electronic Outputs: +21 dBu, 1 kHz
    Output Impedance Transformer and Electronic Outputs: 50 Ohms, 1 kHz
    Mute Mute Cut Off, 1 kHz, 0 dBu

    Input Level, Unity Gain: -100 dB
    Filters Low Pass: 1 to 40 kHz, 12 dB per octave
    High Pass: 10 to 400 Hz, 12 dB per octave
    Meters Input meter, Peak Reading Full Wave Rectifier: 31 segment, -20 to +20 dBu in 1 and 2 dB steps
    Output Meter, Peak Reading Full Wave Rectifier: 31 segment, -20 to +20 dBu in 1 and 2 dB steps
     
    Power Voltage: +16 V, -16 V and +48 V
    Power Consumption: (±16 V): <200 mA per rail, 6.4 W total
    Dimensions (H x W x D) 5.2 x 3.0 x 7.1" / 132 x 76 x 180 mm
    Weight 2.2 lb / 1.0 kg

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