Stam received high praise for our SA-2A and SA-3A compressor replicas, which made the iconic tones of the vintage Teletornix LA-2A and LA-3A accessible to a wider audience. The LA-2A’s warm tone is ideal for bass and vocals, while the LA-3A excels with its smooth midrange for guitars and unique transient response for drums, all at a price point that opened these classic sounds to many.
At Stam Audio, we strive to innovate while preserving the sonic integrity of vintage designs from the 1960s and 1970s. To achieve this, we created the Stam SA-23A, a single unit housing both compressors, switchable via a two-way toggle. Each retains its independent circuit and the same transformers used in the SA-2A and SA-3A, combining two legendary compressors in one unit.
Creating this design was challenging. It was critical to replicate the original signal paths and schematics to ensure each compressor sounded identical to its vintage counterpart. While modern technology offers advancements, the sound of these classics depends on the unique characteristics of their original components.
The T4B optical cell is the heart of any LA compressor. Its light-dependent function and distinct time constants define the signature sound and compression. After extensive testing, we use Bill Jones’s Kenetek T4B, hand-made in the USA, which faithfully replicates the original attack and release times. This component is essential for achieving the authentic sound, and each T4B is thoroughly tested, ensuring durability and performance.
The Stam SA-23A features premium components, including custom-wound US-made transformers and carbon resistors. The SA-2A circuit uses US-made A-10 and A-24 transformers, NOS tubes, and Vishay Sprague capacitors, replicating the original UTC tone. The SA-3A employs custom B11178 input transformers, a UK-made Carnhill VTB11148 output transformer, and Vishay capacitors. Both circuits use the Kenetek T4B, which is unmatched in quality and performance.
Each Stam SA-23A is hand-assembled in our lab in Chile, featuring a black brushed aluminium faceplate and a custom Stam Audio VU meter. This unit not only delivers outstanding sound but also a stunning aesthetic.
