MD421 (LCS)
ReValver Microphones

MD421 (LCS)

Inspired by Sennheiser® MD421 (Bass Roll-Off Switch S)

Model: Sennheiser MD 421

acronym:

  • LCS = Low Cut Strong (maximum low cut) very aggressive high pass filter drastically reduced bass

WHAT CHANGES COMPARED TO THE OTHER VERSIONS

Almost zero “boom” maximum control, very dry sound

SOUND CHARACTER

  • low very reduced
  • medium very prominent
  • high very readable
  • answer extremely precise

in practice: super defined super dry very “modern mix-ready”

TIMBRIC PERSONALITY

it's a mic:

  • ultra tight
  • aggressive
  • very controlled
  • not very natural

perfect for: modern metal djent fast rhythms dense mixes

modern metaldjentfast rhythms

Controls

Axis Interaction

  • ON-axis → maximum attack
  • OFF-axis → slightly softer

here: ON almost always

Gain (dB)

  • volume only

Mic Distance (inch)

  • Distance 0–1”: maximum attack
  • Distance 1–2”: tight
  • Distance 2–3”: more natural
  • Distance >3”: loses character

Low (dB)

already very cut

use:

  • 0 → perfect
  • Never need to cut

High (dB)

use:

  • 0 → natural
  • +1 → more presence
  • be careful not to overdo it

Delay (ms)

useful for: depth layering

Ambience (Y/N)

often OFF ON just for naturalness

Pro Tips

QUICK SUMMARY

  • type: dynamic
  • character: ultra tight
  • strength: definition
  • limit: little body

ON DARK CAB (PPC, Orange)

PERFETTO completely eliminates the “mud”

ON MODERN CABs (VHIII, 6505)

excellent ultra-defined sound

ON VINTAGE CAB

loses character → too modern

ON HI-FI CAB (TVX, SW Giant)

useful adds attack

PRO

maximum definition zero boom perfect for mix ideal for modern metal

AGAINST

not very natural, little body, “thin” sound on its own

Setup Examples

MODERN METAL (TOP)

Dist0.5–1”
AxisON
Low0
High+1
AmbOFF
  • super tight

DJENT

Dist0.5”
AxisON
Low0
High+1

RHYTHM LAYER (PRO)

pair it with50%
  • R121 → body
  • SM57 → attack
  • this = definition

MIX FIX (cab muddy)

Dist1”
AxisON
High0
  • cleans everything