The Miktek CV3 is a multi-pattern tube condenser microphone. The two microphones share a capsule, a power supply and a sonic profile, but employ different output transformers (both provided by AMI). The transformer in the CV3 is physically smaller than the one in the CV4. The CV3 uses a subminiature pentode vacuum tube. Two switches on the microphone body independently engage a high-pass filter (100 Hz) and a 10 dB pad. These features are not offered on the CV4.