Echo Diastasis Introduces the PH-79 Reference Phono Preamplifier
Echo Diastasis has unveiled the PH-79 Reference phono preamplifier, a refined version of their acclaimed PH-79 model. Building on a foundation of meticulous engineering, the PH-79 Reference enhances music reproduction by capturing intricate details from vinyl grooves, delivering a spacious and three-dimensional soundstage. This advancement ensures that each listening session remains both immersive and precise, appealing to discerning audiophiles seeking uncompromised audio fidelity.
The PH-79 Reference employs an original topology developed through extensive research, addressing the complexities inherent in phono preamplifier design. Unlike passive implementations that necessitate additional gain and introduce higher noise and distortion, this model integrates two active RIAA equalization stages without global feedback. This design choice allows for precise gain control at specific frequencies, maintaining a low noise floor and minimal harmonic distortion. Additionally, the split RIAA implementation enhances accuracy and offers superior control over the audio signal.
Key technical specifications include dual mono circuit design, zero negative feedback, and the use of specially designed E-core transformers in the power supply to suppress RF noise effectively. The preamplifier features gold-plated connectors with Teflon insulation, ensuring robust signal integrity. Input impedance options range from 47 Ω to 47 kΩ, accommodating various cartridges, while selectable gain settings of 43 dB for MM and 61/67 dB for MC configurations provide versatile connectivity. With a total harmonic distortion of just 0.009% for MM and 0.011% for MC, alongside a noise floor of -90 dB and -79 dB respectively, the PH-79 Reference stands out for its clarity and dynamic range.
Improvements over the previous version are evident in the reinforced frame, redesigned front panel with intuitive switches, and an enhanced power supply with double capacity. The inclusion of aluminum legs offers effective vibration isolation, and the redesigned PCB ensures a shorter signal path for better performance. High-quality internal OCC wiring and top-tier materials at critical junctures, verified through rigorous component selection, further elevate the preamplifier’s performance. New output devices deliver higher current, enabling the PH-79 Reference to drive longer cables without compromising signal quality.
Overall, the Echo Diastasis PH-79 Reference represents a significant leap in phono preamplifier technology, harmonizing technical excellence with musical expressiveness. Its ability to render music with transparency, rich harmonics, and dynamic precision makes it a standout choice for vinyl enthusiasts seeking top-tier audio reproduction.
