The Stam Audio SA-67 is a boutique large-diaphragm tube condenser microphone that brings the coveted, three-dimensional tone of the legendary 1960s Neumann U 67 within reach of real-world studio budgets. Built by hand in Chile according to vintage schematics, the SA-67 combines a custom K67-style brass capsule with an authentic NOS EF86 vacuum tube, a custom-wound BV12 output transformer, and the crucial high-frequency de-emphasis circuit that defined the original's smooth, effortless vocal authority.

Unlike modern U 67 clones that cut corners by utilizing off-the-shelf capsule heads or modern clean tube substitutes, Stam Audio’s period-correct approach preserves the signature mid-range density and natural top-end roll-off of the classic German design. It excels at smoothing out harsh sibilance on aggressive vocalists while adding rich second-order harmonics, deep proximity weight, and natural room air to acoustic instruments, drum overheads, and cabinet tracking.

The Stam Audio SA-67 is a remarkable solution for commercial facilities and home studios seeking genuine 1960s U 67 tube warmth. Delivering silky top-end detail, dense mid-range weight, and vintage transformer depth, it stands out as a world-class vocal and multi-instrument tracking microphone.

The Stam Audio SA-67 is a boutique, handcrafted large-diaphragm tube condenser microphone engineered to deliver an exacting, period-correct recreation of the legendary 1960s Neumann U 67. Built by hand in Chile, the SA-67 captures the rich low-end body, warm mid-range detail, and smooth, natural top end that made the original U 67 an essential vocal and instrument microphone in recording history.

At the core of the SA-67 is Stam Audio’s custom SA-67 capsule (a precise K67 brass capsule reproduction with 6-micron Mylar gold-sputtered diaphragms), paired with an authentic NOS EF86 vacuum tube and a custom-wound BV12 output transformer. The circuit strictly follows the original vintage schematic—including the signature high-frequency de-emphasis network—ensuring that harsh sibilance is naturally tamed while maintaining deep spatial dimension and harmonic warmth. Complete with a regulated linear external power supply, custom shock mount, and flight case, the SA-67 provides true vintage German tube character for modern commercial studios.

Key Features

• Authentic Vintage U 67 Circuitry: Built according to original 1960s schematics, utilizing point-to-point wiring and premium audio-grade components (WIMA, Solen, and Vishay capacitors).

• Hand-Selected NOS EF86 Tube: Incorporates new-old-stock EF86/6267 vacuum tubes to ensure low self-noise, high headroom, and rich second-order harmonic saturation.

• Custom SA-67 Capsule: In-house developed K67-style dual-diaphragm brass capsule engineered to match vintage frequency response curves and polar response patterns.

• Custom BV12 Output Transformer: Precision-wound output transformer designed to reproduce the exact inductance, turn ratio, and low-end warmth of original vintage BV12 transformers.

• Three Selectable Polar Patterns: Front-panel switchable Omnidirectional, Cardioid, and Figure-8 polar patterns for complete directional versatility.

• Integrated Pad & Filter Switches: Features an onboard $-10\text{ dB}$ attenuation pad for high-SPL tracking and a high-pass filter to control proximity effect and sub-bass rumble.

• Regulated External Power Supply: Includes a custom-built low-noise linear power supply with high-voltage regulation to maintain stable tube performance and maximum dynamic range.