Avantone Pro BV-1 mkII Variable-Pattern Tube Condenser Microphone

The BV-1 mkII is Avantone's flagship valve condenser, built on a custom dual-sided 34 mm edge-terminated capsule with a 6 micron gold-sputtered Mylar diaphragm and a selected low-noise Russian 6072A tube. Pattern is continuously variable from figure-8 through cardioid to omni rather than stepped, so the amount of room in the sound is a fine adjustment made at the power supply.

The body carries an 80 Hz high-pass at 6 dB/octave and a -10 dB pad, taking maximum SPL from 134 dB to 144 dB. Noise sits under 18 dB A-weighted and the transformer-isolated output is under 200 ohms. The microphone connects to its 90 - 220 VAC supply through a 7-pin male XLR on a German-made Sommer cable, and the package includes the power supply, shockmount, pop filter, padded wooden mic box, and road case.

Type	Tube condenser
Capsule	Custom dual-sided 34 mm edge-terminated gold-sputtered Mylar (6 micron)
Tube	Select low-noise Russian 6072A
Polar Patterns	Variable, figure-8 through cardioid to omni
Frequency Response	25 Hz - 20 kHz
Sensitivity	-35 dBV
Equivalent Noise Level	Under 18 dB (A-weighted, IEC 268-4)
Max SPL	134 dB (0.5% THD at 1 kHz); 144 dB with pad
Filters	80 Hz high-pass at 6 dB/octave; -10 dB attenuation switch
Output Impedance	Under 200 Ohms, transformer isolated
Connector / Power	Male 7-pin XLR; 90 - 220 VAC power supply
Included	Power supply, 7-pin Sommer cable, shockmount, pop filter, padded wooden mic box, road case