
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

