Fosi Audio GR70
Pure tube amplification: The GR70 headphone tube amplifier combines vintage charm with modern technology to deliver authentic tube sound quality. Perfect for headphone enthusiasts, it works exceptionally well with over-ear and in-ear headphones to deliver superior sound quality.
Four tubes: Features two 5654W and two 6Ж4 vacuum tubes for two-stage amplification. The 5654W tubes boost the voltage, while the 6Ж4 tubes provide power amplification. This configuration delivers a balanced, transparent, and detailed sound.
User-friendly design: This headphone tube preamplifier features intuitive controls, including a large volume knob, ventilation openings on both sides, bass and treble controls, and high- and low-impedance switches, making it highly versatile.
Two-in-one: it supports switching between low- and high-impedance modes to accommodate headphones ranging from 16 Ω to 300 Ω, and features 6.35 mm and 3.5 mm headphone jacks on the front and RCA input/output on the back for integration into a home hi-fi audio system.
Compact yet powerful: the GR70 is crafted from CNC-machined aluminum alloy, combining durability with sophistication. Despite its compact size, it delivers an output power of up to 300 mW and a 1.2 V RCA output with an SNR of ≥97 dB, resulting in a warm, clear, and dynamic sound.
Specifications
| DAC | No |
| DSD | N/A. |
| Battery | N/A. |
| Bluetooth | No |
| Entries | RCA |
| Outputs | RCA |
| Headphone output | 3.5mm Single-Ended, 6.35mm Single-Ended |
| Dimensions (HxWxD) | n.b. |
| Weight | n.b. |
| Warranty | 2 years |
| Scope of delivery | GR70 Orange, 12V/3A Power Adapter, User Manual |
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