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Rolls Bellari MP507 Tube Microphone Preamplifier
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Rolls Bellari MP507 Tube Microphone Preamplifier

SKU: ROLMP507
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Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

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TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Malfunction Protection

Malfunction Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for purchase Internationally or in U.S. Territories.

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Rolls MP507 Specifications

  • Mic Preamp: Input Impedance

    XLR: 600Ohm (Transformer balanced)
    1/4": 1mOhm

  • Mic Preamp: Output Impedance

    XLR: 100Ohm
    1/4": 100Ohm

  • Mic Preamp: THD

    0.15%

  • Mic Preamp: S/N Ratio

    >110dB

  • Mic Preamp: Maximum Input Level

    -30dB mic +4 line XLR, -10dB 1/4"

  • Mic Preamp: Maximum Output Level

    +16dB XLR, +10dB 1/4"

  • Mic Preamp: Pad

    -37dB

  • Mic Preamp: Frequency Response

    20 - 25kHz +/-3dB

  • Power Adapter: Input

    100-240V AC, 12VA

  • Power Adapter: Output

    15VDC, 200mA

  • Power Adapter: Connectors

    2-Prong AC Plug
    2.1 x 5.5mm (0.08 x 0.22") DC Plug (Tip Negative, Barrel Positive)

  • Power Adapter: Cord Length

    6' / 1.83m

  • Dimensions

    Mic Preamp: 3 x 5.5 x 6" / 76.20 x 139.70 x 152.40mm
    Power Adapter (H x W x D): 2.5 x 1.5 x 1" / 63.50 x 38.10 x 25.40mm

  • Weight

    Mic Preamp: 1.6lbs / 0.73kg
    Power Adapter: 2.5oz / 70.87g

  • UPC Code

    675889050707

About Rolls MP507

• Real 230V tube plate voltage
• Internal high speed self regulating switching power supply
• MU metal shielded input audio transformer
• 48V of clean, quiet phantom power

MP507 Tube Mic Preamp
The MP507 is a single channel preamp that utilizes a single 12ax7 vacuum tube. It has a MU-Metal audio transformer to decrease noise and enhance the sound quality of the XLR input. The design of the MP507 utilizes a high speed self regulated switching power supply to generate 230V of clean usable plate voltage for the 12ax7 vacuum tube. The result is a clean and powerful sounding tube preamp.

PS27s 15 Vdc 300ma 100-240vac adapter
The PS27s is the main DC adapter for Rolls it outputs 15Vdc @ 300ma. has a 6ft cord with a DC connector on the end, tip negative barrel positive. Actual product appearance may be different than photo. The universal input makes it usuable in the USA and most of the rest of the world.

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What's in the box:

  • Rolls Bellari MP507 Tube Microphone Preamplifier
  • PS27s Wall Power Adapter
  • Rolls 1 Year Parts and Labor Limited Warranty