The microphone itself is designed to deliver a truly authentic vintage sound thanks to its premium components, including a true NOS EF86 pentode vacuum tube, a custom-wound US-made high-nickel transformer, and a 24kt gold-sputtered 6-micron PET film diaphragm within a custom-designed K48-style capsule. Meticulous efforts have been taken to minimize any noise or interference. The body itself is stylish and exceptionally durable, made from solid milled brass with nickel electroplating. Furthermore, the external power supply is built to offer the best possible electrical performance for this tube mic, further reducing noise and EMI. The UT Twin87 includes an external power supply, a premium Sommer Octave 7-pin XLR cable, a shockmount, and a vintage-style briefcase.
- 47 Cardioid: decouples the rear diaphragm in a process known as True Cardioid, for a louder sound with improved sensitivity with more background and top-end detail
- 48 Cardioid: polarizes the rear diaphragm with the same voltage as the backplate, also known as Active cardioid, for a more tightly closed in, warmer, intimate tone that is slightly lower in sensitivity
Custom US-made PRP resistors and long-life, high-quality electrolytic capacitors are used throughout, selected to be a very robust traditional linear frame-mounted power supply transformer. In an effort to eliminate as much noise as possible, no IC package regulators, generic parts, or cheaper switched-mode power transformers were used in the UT Twin48. The power supply also features both an inline EMI/RFI AC input filter and a selectable RF filter on the audio output, which can be engaged from the convenience of the power supply front panel.