MainBuyer Evidence Layer

Fosi Audio GR70 Tube Headphone Amp Preamp, Authentic Tube-Amplification with Vacuum 5654W*2 & 6AC7*2, Mini HiFi Preamplifier for Home Audio, 3.5mm & 6.35mm Jacks Supporting 16-300 ohms Imped UK price history

Timestamped retailer-price observations recorded by MainBuyer in United Kingdom. These figures are first-party MainBuyer records, not a reconstructed or estimated daily price chart.

Lowest observed

£179.00

Recorded while shown in stock.

Median observed

£179.00

Median of recorded in-stock observations.

Observations

1

Across 1 retailer.

Tracking since

11 Nov 2026

Last checked 11 Nov 2026.

Observed ranges

What MainBuyer has recorded in United Kingdom

30-day low

£179.00

90-day low

£179.00

Highest observed

£179.00

Evidence table

Latest recorded observations

View machine-readable JSON
ObservedRetailerPriceStatus
11 Nov 2026 04:11Amazon UK£179.00In stock when checked
Methodology

How this price dataset is produced

Each row is created when a MainBuyer offer record has both a price and a real price checked timestamp. Repeated checks can create repeated observations even when a price has not changed, because that records how long the observed price remained available.

Historical low, high and median calculations use recorded observations that were marked in stock. Missing dates are left missing: MainBuyer does not interpolate, backfill or invent prices for periods when no check took place.

For the buying verdict, limitations and current retailer comparison, see the Fosi Audio GR70 Tube Headphone Amp Preamp, Authentic Tube-Amplification with Vacuum 5654W*2 & 6AC7*2, Mini HiFi Preamplifier for Home Audio, 3.5mm & 6.35mm Jacks Supporting 16-300 ohms Imped price comparison and review. For the wider dataset, see the MainBuyer UK Price Index. See also how MainBuyer reviews products.