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Mods for the 600800

  • Microphone PartsMicrophone Parts
    The new mod kit for the MXL 990S and 770 transforms this sub-$100 mic into a high-end studio workhorse: very low noise, high sensitivity, and your choice of color: RK7 (dark), RK-47 (balanced), or RK-12 (smooth presence). Designed by Jim Williams, the mod kit lets you build an expensive-sounding mic without the guesswork and tinkering that plagues most DIY mod efforts. The kit rebuilds the audio circuit with high-grade, hand-picked parts.

Monoprice 600800

Pricing & Availability

  • MSRP: $75


Reviews & News

600800 Documentation

CardioidMonoprice 600800

Cardioid Condenser Microphone

The Monoprice 600800 is a small-diaphragm FET condenser with switchable pad and filter. The samples we’ve seen are identical to the MXL 770 — same capsule, same circuit board, same components and switches, body and paint.

600800Both the 770 and 600800 use a variation of the transformerless circuitry pioneered by Schoeps. In both cases, the circuit is implemented with through-hole components on a single circuit board.

Two switches on the rear of the microphone independently enable a pad (-10dB) or high-pass filter (-6dB/octave @ 150Hz). These switches operate solidly and appear to be high quality; none of the samples we’ve seen demonstrate any looseness, jiggling, or ambiguity.

The capsule, although described (as of this writing) on the Monoprice website as “large diaphragm,” is in fact MXL’s standard 17.1mm small-diaphragm design, about which much more can be read in the “MXL 603S capsule dissection” link in the sidebar. In the 600800, as in the MXL 990 series (and 770), the 22mm O.D. capsule is mounted within a brass baffle ring, which serves to delay the acoustic path around the microphone, thereby improving the mic’s Cardioid polar pattern.

600800The circuit employed in the 600800 is well understood by the DIY community, due to its heritage, and responds well to aftermarket modification. For example, some of the capacitors can be swapped in order to expand the mic’s frequency response. See the sidebar for links to commercial modification options.

The MXL 990S employs the same capsule and circuit, albeit in a shorter case.

The 600800 ships in a padded cardboard box with a black, metal-frame elastic shockmount and a spare set of elastics. The shockmount appears to be identical to the MXL-70 (included with the MXL 770/990S/990).

As of late 2014, the 600800 appears to have been transitioned to a surface-mount circuit board, like the MXL 770. This makes the microphone less useful as a circuit mod platform, although it is still a good candidate for a capsule swap.

Permalink: Monoprice 600800

The mic was released in 2012.


Pickup Patterns Pads & Filters
Cardioid (15 mV/Pa; 30 - 20,000)
  • Pad: -10dB (Via Switch)
  • Filter: HPF: -6dB/octave @ 150 (Via Switch)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 17.1mm
Capsule diameter: 19.9mm
Diaphragm gauge: 6 microns
150 Ohms (Low) Max SPL: 137 dB
Self-noise: 20.0 dB(A)
Weight Length Max Diameter Interface(s)
390g (13.76oz) 154mm (6.06'') 60mm (2.36'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 48v

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