Fosi Audio BT20A MAX Stereo Power Amplifier, 300W Peak x 2 Hi-Fi Amp

No retailer we track is showing a price we can publish right now. The history below is still ours and still true; today’s number is not.

Amazon last quoted a price 1d ago, and their licence lets us print one for 24 hours. We asked again 10h ago and the answer came back without one.

Check at Amazon Tell me when it is back

We are not ready to call this price.

We check at least every 12 hours and hold a day-by-day record of what this cost — 10 days of it so far. Calling a price high or low needs 7 of those days and at least one change, because a range needs two prices: we have recorded 1 change.

Tell me when it drops

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Under a priceNew record lowBack in stock

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Price history

One line: the best price any tracked retailer charged, per day.

Price set by a third-party seller, not the retailer itself

10 days on record · 1 price change

sales rank — the line rises as it sells moreShaded stretches are sales, from our calendar.

Use this chart elsewhere:The chart redraws itself as we record new prices.

Prices we recorded ourselves. Usual is the price on the typical day, with limited-time deals left out unless they ran on most of the days we recorded; Average is the mean of every recorded day, deals included, so a gap between the two columns is a record holding an outlier.
Price	Now	Lowest	Highest	Usual	Average	Days recorded
New	—	$212.49 on Oct 1	$249.99 on Oct 6	$249.99	$231.24	10

Sales events

Next on the calendar: Black Friday, November 27. We keep checking this price through it and report here what it did.

Where to buy

AmazonhiddenOut of stockCheck

Held for: 4d
Their 10-day low: $212.49
Checked: 1d ago

Prices checked at least every 12 hours. “Held for” is how long that retailer has been charging this price. A hidden price is one we cannot re-confirm recently enough to publish.

We earn a commission on purchases. It never affects our rankings.

What it is

5 attributes, in the retailer’s own words. We record the prices; these we only pass on.

Color: Black
Weight: 2.65 pounds
Dimensions: 7.87 × 7.09 × 1.57 inches
Model: BT20A MAX
Warranty: 24 Months Manufacturer

Every change we recorded at Amazon

Every row is a price we saw change. We write one only when a price actually moves, so a gap here means the price held.

When	Price	Change
Oct 6 · 4d ago	$249.99	+$37.50
Oct 1 · 9d ago	$212.49	first seen

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