Orpheus

About the Orpheus

The Thrax Audio Orpheus is a premium phono preamplifier designed to extract the finest detail from vinyl cartridges. It features two tube gain stages with zero feedback and a passive LCR equalizer between them, ensuring pure and precise RIAA equalization. The unit supports both moving magnet (MM) and moving coil (MC) cartridges, with a built-in step-up transformer for MC sources. It offers programmable gain and loading per input, balanced and unbalanced inputs and outputs (RCA and XLR), and ground plane switching to prevent ground loops and hum. The power supply uses a choke input rectifier and shunt regulated constant current design for ultra-low noise and excellent dynamic behavior. The chassis is machined from solid anodized aluminum with a modular construction and microprocessor control for precision and reliability. The Orpheus weighs 15 kg and measures approximately 432 x 400 x 120 mm. It uses high-quality tubes (2 x D3a and 2 x 6C4П) and custom vacuum encapsulated relays for ultimate sound and durability. This phono stage is regarded as one of the quietest and most refined tube phono preamplifiers available, setting a benchmark for vinyl replay.