The Fosi Audio GR70 is a compact Hi-Fi tube headphone amplifier and preamplifier designed to deliver a warm and detailed sound signature. Equipped with four tubes (two 5654W + two 6J4), it combines the charm of analog sound with the precision of modern design. It features independent bass and treble controls, 3.5mm and 6.35mm headphone outputs, and RCA inputs/outputs for easy integration into any audio system.
Main features:
Tube headphone amplifier and Hi-Fi preamp
Four tubes: 2 × 5654W + 2 × 6J4 (replaceable)
RCA input / RCA output with volume control
3.5mm and 6.35mm headphone jacks on the front panel
