MXR M81 Bass Preamp

Enjoy Prestine Signal From Your Bass With The MXR M81 Bass Preamp

The MXR Bass Preamp combines a pristine bass preamp with a studio-quality Direct Out in a Phase 90-sized box, providing clear tone without hogging precious pedalboard space. Use it to add a new voice to an old passive bass, sweeten up any amp, or put some special sauce on a particular song. Dial it in just the way you want it and send it straight to the house-pre or post-EQ-with the built-in Direct Out.

The Bass Preamp features separate Input and Output level controls and a 3-band EQ section with sweepable midrange-from 250hz to 1khz-for extensive tonal flexibility. It’s all delivered super clean with high headroom thanks to our own Constant Headroom Technology™ and you can use the PRE/POST EQ switch to set whether or not your Direct Out signal is affected by the Bass Preamp’s EQ section. And of course, the Bass Preamp features a GROUND LIFT switch in case you encounter ground loop hum.

The Bass Preamp is factory preset to operate in 1/4″ out buffered bypass and Direct Out active. For players who only want to use the 1/4″ out, there are two internal switches that disable the Direct Out and 1/4″ out buffered bypass for true 1/4″ out bypass mode.

• 3-Band EQ with sweepable midrange
• Studio-quality Direct Out
• Constant Headroom Technology for clean, crystal clear tone

• Input Impedance: 2.2 MΩ
• 1/4” Output Impedance: 300 Ω, 40 Hz
• Balanced Output Impedance: 120 Ω, 40 Hz
• Maximum 1/4” Output Level: +13 dBV
• Maximum Balanced Output Level: -2 dBV
• Noise Floor*: -98 dBV
• THD: 0.03%, 1 kHz
• EQ Controls: Bass: ±16 dB, 40 Hz; Mid: ±17 dB, 250 Hz to 1 kHz; Treble: ±18 dB, 4 kHz
• Input Control: Pre EQ, ±10 dB
• Output Control: Post EQ, +20 dB
• Bypass**: True, Hardware, Buffer
• Current Draw: 8.5 mA
• Phantom Power Current Draw: 5 mA
• Power Supply: 9 volts DC

 

*A-weighted, all controls at mid position

 **1/4” Output, Internally Selectable

Manufacturer: MXR
Model: M81
SKU: I307376-N-2-WHXC
UPC: 710137072770

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