Model 2

About the Model 2

The Don Sachs Model 2 is a tube line stage preamplifier that utilizes 6SN7 tubes for its buffer and gain stages, delivering a warm and engaging sound signature. It features a fully dual-mono design with independent B+ and filament supplies for each channel, which enhances stereo separation and reduces noise significantly. The power supply uses tube rectification for a soft start and superior sonic performance, complemented by voltage regulators that reduce noise by at least 20 dB, resulting in a deep, dark background. The preamp offers multiple single-ended (RCA) inputs, with an optional XLR input available that uses high-quality Cinemag line transformers for balanced conversion. Outputs are single-ended RCA only. Volume control is managed by a 64-step Khozmo attenuator with input relay switching for precise adjustments. Users can customize the preamp with capacitor upgrades and tube selections to tailor the sound to their preferences. The Model 2 is praised for balancing tube warmth with accuracy, providing a sound that is neither overly colored nor clinical, making it versatile for pairing with both tube and solid-state amplifiers. It also includes options to switch outputs to tailor bass response. The unit is regarded as a great value at around especially on the used market.