Fosi Audio GR70 Tube Headphone Preamp, Authentic Tube Amplifier with Vacuum 5654W x 2 and 6AC7x2, Mini HiFi Preamplifier for Home Audio, Impedance 16-300 Ohm

Fosi Audio GR70 Tube Headphone Preamp, Authentic Tube Amplifier with Vacuum 5654W x 2 and 6AC7x2, Mini HiFi Preamplifier for Home Audio, Impedance from 16 to 300 ohms.

• Pure Tube Amplification: The GR70 tube headphone amp combines vintage charm with modern technology, delivering the essence of tubes. Perfect for headphone lovers, it pairs perfectly with over-ear and in-ear headphones for superior sound.
• Quad Tubes: Two 5654 W tubes and two 6AC7 tubes provide two-stage amplification. 5654W tubes boost voltage, while 6AC7 tubes provide power amplification. This configuration provides balanced, transparent and textured sound.
• User-friendly design: This tube headphone preamplifier offers intuitive controls including a large volume knob, ventilation holes on both sides, bass and treble controls, high and low impedance mode switching, making it versatile enough
• TWO IN ONE It supports switching low and high impedance modes to fit 16Ω-300Ω headphones, and has 6.35mm/3.5mm headphone jacks on the front and RCA input/output on the back for home HiFi audio system integration
• Compact and Powerful: Made with a CNC machined aluminum alloy housing, the GR70 is both robust and refined. Despite its compact size, it delivers up to 300mW output power and 1.2V RCA output with signal-to-noise ratio ≥97dB for warm, clear and dynamic sound.