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Pure Tube Amplification
Adjustable Impedance and bass & treble Control
2-in-1 Headphone Amp and Preamp
Supports 16–300Ω Headphone Impedance
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Featuring two replaceable 5654W and two 6Ж4/6Ж8 vacuum tubes*, it offers a customizable auditory experience. Immerse yourself in the authentic warmth and smoothness of analog audio.
*The vacuum tube images are for reference only. The manufacturer reserves the right to change certain product features, colors, packaging, or place of origin without prior notice.

Integrating Vintage Charm with Modern Precision
The GR70 is a two-in-one headphone amp andpreamp. Easily integrate this tube preamp into your home audio system with itsmultiple headphone jacks and RCA input/output options.