The Triode TRX-EQ7 is a solid-state MM/MC phono preamplifier praised for its warm, refined sound and excellent value, delivering precise RIAA equalization (±0.5dB, 20Hz-20kHz) with low distortion (0.025%) and strong channel separation (70dB).
This is an ex-showroom unit in exceptional, near-mint condition. A rare opportunity not to be missed.
Triode is a well-respected Japanese high-end audio brand best known for its dedication to vacuum tube (valve) amplification and traditional analog sound design.
Founded in Japan in the 1990s, Triode’s philosophy centers on preserving the musicality, warmth, and emotional engagement that classic tube audio is famous for, while applying modern engineering standards for reliability and consistency. Unlike mass-market manufacturers, Triode focuses on low-volume, carefully engineered products, appealing primarily to serious audiophiles and vinyl enthusiasts.
Triode TRX-EQ7 Phono Preamplifier
The Triode TRX-EQ7 employs a Class A FET solid-state circuit optimized for low noise and high linearity, supporting both MM and MC cartridges via adjustable impedance loading (MM: 47kΩ; MC: 4-47Ω).
Circuit and Performance Design
Its RIAA equalization achieves ±0.5dB accuracy from 20Hz-20kHz with 0.025% THD and 70dB channel separation, using discrete FET inputs for MC sensitivity down to 0.25mV (64dB gain) without hum. Single RCA input/output keeps the signal path minimalist at 300Ω output impedance, powered by an external AC/DC adapter for vibration isolation.