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Miles_ONeal
mxr81.png

Mxr M81 Bass Preamp

4/5, 4 from 1 review
Bass preamp + studio quality direct out
mxr81.png

Recent Reviews

  1. Miles_ONeal
    Good preamp, if a little noisy
    4/5, 4 out of 5, reviewed Oct 1, 2020
    Build Quality:
    5.00/5,
    Features:
    5.00/5,
    Value:
    3.00/5,
    Pros
    • + Great preamp circuit
    • + Built like a tank
    Cons
    • - Some noise added
    This is the only MXR pedal I haven't been thrilled with. It does everything well, but has a bit of hiss.[1] I use a (provided) SansAmp DI on a regular basis, and like it (plus it's dead quiet), but was looking for something smaller and less expensive to sit on my board. Feature-wise, the MXR does everything I need and sounds great. Like all newer MXR pedals, the LED is super bright.

    [1] I bought this used, and the hiss was very noticeable. I sent it to Dunlop to have it looked over and brought to factory specs for $50. When I got it back, the hiss was quieter, but still there. A note with the pedal indicated that it was within factory specs. I still use it, but when I'm where the SansAmp is, I use that.
    Price Paid:
    100.00

Item Details

  1. Pedal Type:
    preamp + DI
    Batteries:
    9V battery or standard DC adapter
    EQ / Controls:
    input & output volumes; bass, mid (parametric), treble; ground lift, direct output pre/post, bypass footswitch
    Price:
    169.99
    Features:
    midrange frequency selector is a 5-way switch
    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 pedal board 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 ¼" out buffered bypass and Direct Out active. For players who only want to use the ¼" out, there are two internal switches that disable the Direct Out and ¼" out buffered bypass for true ¼" out bypass mode.
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