All amplifier stages of the SPA01 are individually supplied with filtered power circuits. We have paid special attention to the driver stages. They are uniquely designed to provide a very stable and linear transfer to the output stages.

All resistors, capacitors, matched transistors and MOSFETs are carefully selected during the design process and at procurement and are of the highest quality.

The choice of each amplifier component depends entirely on the task it must perform. That could be a transistor, a FET or even a tube, if necessary.

We approach the market of high-end audio equipment market not only by focusing exclusively on perfect reproduction, but also by devoting attention to craftsmanship down to the smallest detail.

Each meticulously selected part, all semi-finished products, bear our signature. Modus Audio Systems has a state-of-the-art equipped workshop with its own CNC controlled turning and milling machines, CAD-CAM software, pick-and-place machine and reflow oven, etc.

Carefully selected specialized companies, with whom we work very closely, provide certain treatments in the production process. Thus, high- quality surface treatments are outsourced, and the wooden casing is produced by third parties, depending on the end-user's requirements.