Студийный микрофон Sony C-37A Vintage Tube Condenser Microphone Japan 1960s w/Case

Responsible for the iconic “smokey” vocal sound of the ‘60s, the C-37A is a mic that almost circumvents the need for any EQing; it has a natural midrange warmth with a slight dip in the upper mids that is ideal for vocals, and the silky smooth treble response tempers any guitars or vocals that may otherwise be too harsh or bright. Despite lacking a pre-attenuation pad, the low output of the C-37A ensures that it can be used on loud sources without fear of overloading the preamp. Originally designed to compete with the Neumann U47, the C-37A sports a number of unique innovations that result in its distinctive response. The C-3 edge-terminated capsule, measuring 37mm (1.45”) in width, has a 6 micron mylar diaphragm, “sputtered” with a layer of gold 3 microns thick for ideal conductivity and temperature control. Additionally, the C-37A features a tuned acoustic baffle chamber behind the capsule that can mechanically alter the polar pattern from cardioid to omni-directional with the turn of a screwdriver (accessed on the back of the microphone).

The CP-3B power supply unit was the fourth power supply iteration, introduced in 1964, featuring more tonal sculpting options than prior iterations. The rotary knob selects the low-frequency rolloff point (essentially a high pass filter), with four positions:

M (Music) - flat response (-2dB @ 30Hz)
M1 - rolloff 1 (-3dB @ 80Hz)
V1 (Voice) - rolloff 2 (-3bD @ 200Hz)
V2 - rolloff 3 (-3dB @ 600Hz)

The CP-3B also features a push-button High Cut On/Off switch, and two impedance and output level settings, and operating voltage is also user adjustable. The CP-3B is also notable for being the first iteration of Sony PSU to be built around a PCB.