Fosi Audio GR70 Tube Headphone Amp Preamp, Authentic Tube-Amplification
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Best Deal
In stockR6,890
The Story
The Fosi Audio GR70 is a compact tube headphone amplifier and preamp that blends vintage tube warmth with modern precision. Featuring two 5654W and two 6AC7 vacuum tubes for two-stage amplification, it delivers balanced, transparent, and textured sound. With intuitive controls including bass and treble adjustment, high/low impedance switching, and multiple input/output options, it's a versatile addition to any HiFi system.
add_circle The Upside
- check Warm, dynamic sound with tube character
- check Versatile connectivity for headphones and home audio systems
- check User-friendly controls and compact design
remove_circle The Downside
- close Requires external 12V/3A power supply
- close May not drive very high-impedance headphones as powerfully as larger amps
- close Tube replacement may be needed over time
Specifications & features
Key features
- check_circle Quad vacuum tube design (2x 5654W, 2x 6AC7) for authentic tube amplification
- check_circle Two-in-one headphone amp and preamp with RCA input/output
- check_circle Adjustable bass and treble controls
- check_circle High and low impedance mode switching (16-300 ohms)
- check_circle Compact CNC-machined aluminum alloy body
Specifications
Power Output
90mW @ 32Ω
Frequency Range
20Hz - 20kHz (±1dB)
Headphone Impedance
Low: 16-120Ω, High: 120-300Ω
Input
RCA
Tags
Other
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