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Your cart is empty.5.0 out of 5 stars
- #75,376 in Electronics (See Top 100 in Electronics)
- #31 in Audio Component Preamplifiers
Product Description
Fosi Audio GR70 Vacuum Tube Headphone Amp/Preamp
Featuring two replaceable 5654W and two 6AC7 vacuum tubes, it offers a customizable auditory experience. Immerse yourself in the authentic warmth and smoothness of analog audio.
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Quad-Tube Dual-Stage Amplification
Thoughtfully selected tube combination for a musical and immersive sound.
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Ideal for Headphone Enthusiasts
It pairs excellently with over-ear and in-ear headphones for superior audio.
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Ideal Partner to V3 & Q6
It pairs perfectly with power amps and passive speakers for a top-notch audio setup.
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Customize Your Unique Sound
With central detents to easily restore the natural sound.
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Large Top-Mounted Volume Knob
Built-in precision damped potentiometer for smooth, accurate control.
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Switchable Output Impedance
Ensuring optimal control and cleaner sound across a wide range of full-size cans and IEMs.
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Efficient Cooling and Thermal Stability
Keeps dust out while maintaining airflow to protect internal components.
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A Blend of Metal and Elegance
Full aluminum alloy body, finely sandblasted, featuring a minimalist and durable design.
K-Brown
Reviewed in the United States on July 5, 2025
This is a true vacuum tubes amplifier, not an amp with “buffer” tubes and op amps. It is also an all analog preamp and it’s really well built with thick aluminum enclosure. The sound is really good, I have tried it with planar magnetic headphones and this amp drives them with ease and great sound quality, you also have to appreciate that tones controls are included in its design. Good job Fosi Audio!
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