Fosi Audio GR70
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The power depends on the power supply, which is not supplied with all configurations.
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Buy Fosi Audio GR70
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Fosi Audio GR70 Tube Headphone Amp - AU GR70-AU-12V | $189.99 |  | |||
Fosi Audio GR70 Tube Headphone Amp - US GR70-US-12V | $199.99 | | |||
Fosi Audio GR70 Tube Headphone Amp - EU GR70-EU-12V | $199.99 | | |||
Fosi Audio GR70 Tube Headphone Amp - UK GR70-UK-12V | $199.99 | | |||
Fosi Audio GR70 Tube Headphone Amp - Other GR70-12V-B | $199.99 | | |||
Fosi Audio GR70 Headphone Amplifier | $199.99 |  | |||
Video reviews
FOSI GR70 Better Than My $1,000 Preamp
15 August 202522 899 view
Fosi Audio GR-70 - Valve Amplifier
18 July 20259 801 view
Fosi Audio GR70 Tube Headphone Amp
29 October 20257 541 view
Fosi Audio GR70 Tube Headphone Amp - The New Audiophiles' First Tube Amp?
12 January6 132 view
Fosi Audio GR70 Review $200 Tube Headphone Amp Worth It?
31 August 20254 521 view
FOSI AUDIO GR70
3 June 20254 430 view
Fosi GR70: Great Budget Tube Amp (just change the tubes!)
23 November 20254 391 view
The Knobs Make a BIG Difference | Fosi Audio GR70 Vacuum Tube Headphone Amplifier & Preamp
16 November 20253 616 view
Budget Tubes Done Right? Fosi GR70 Headphone Amp Review
18 December 20252 771 view
Fosi Audio GR70 Tube Headphone Amp - My Thoughts
30 September 20252 515 view
Fosi Audio GR70 Tube Headphone Amp Review
28 August 20251 601 view
(3) My new REL Classic 98 sub, Fosi Audio GR70 (pre & headphone), 2A3/45 SET amp, Lowther PM2A horn
21 September 2025802 view
Fosi Audio GR70 Unboxing! First Look at This $200 Tube Headphone Amp
28 August 2025669 view
Unboxing the Fosi Audio GR70 vacuum tube headphone amp/ preamp
16 December 2025380 view
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portable, DAC: ESS ES9039Q2M, 768 kHz, 32 bit, headphone output: 16 – 300 Ohm, mini-Jack 3.5 mm, Pentaconn 4.4 mm, input USB-C, 220 мВт at 32 Ohm, signal/noise 122 dB
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