Is this an right time to buy hifi?

Never buy Bitcoin, and silver and gold aren’t that great of investments. There are so many better investments to make out there.
As for an audio system, car, and other tangibles, these are not investments, they lose money the minute you take them out of the showroom. A house is normally not an investment either.
I would never buy a car or audio system on credit because you will be upside down in owing more than what they are worth.
Buy what you can afford

@millercarbon Fed printing, precious metals, crypto: All agreed. 
@p05129 Not that this is a digital currency forum, but Google large (US by the way) institutional holdings now and you’ll quickly see why your next audiophile component will soon be transacted through crypto. It’s an inevitable reality with today’s market infrastructure. 

MC and the rest - one day you'll be right:
https://en.wikipedia.org/wiki/List_of_dates_predicted_for_apocalyptic_events
But not today it seems. 

Some of these lists are complete twaddle. 

Do your research and buy from companies with a long and consistent track record. How did they perform during recessions and booms. Has their quality remained consistent. There is no doubt you have to wait for better gear to be built as most smart manufacturers dont overproduce during booms or ramp up production during momentary spikes. The real question...did consumer purchasing habits change in 2020 for good or will they return to trend. No one knows but alot of things affect demand. In addition Brexit, etc has changed the British hifi market and who knows what to expect.

Regarding investment and economic advice offred on an audio forum. Proceed at your own risk. @millercarbon may very well be right and Warren Buffet may very well be wrong. You pick. I’ve done reasonably well over the past 30 years investing with Mr. Buffet but I’m sure when all heck breaks loose and those 30 years of investments vaporize, I know I can count on the compassion of @millercarbon to allow me to share a can of peaches in his underground bunker while he communicates on his shortwave during the apocalypse.