Ok, why do you feel they are 'done' ?
Because Class A and Class A/B amps are not what younger people (than boomers) want anymore.
I’m 55 (gen x) and i’ve listened to $90k,$200k,$1m systems so i know what great sound is , but i don’t want big/heavy components over 45 lbs (preferably <25 lbs), runs hot, not have the right inputs/outputs.
I want new technologies that sound as good or better than the old technologies and be lighter, smaller, runs cooler, have native Apple Music, and costs less.
i bought new technologies:
- lossless streaming: Apple Music
- streaming/music server/cd ripping/native Apple Music: eversolo DMP-a6
- ddc with I2S output: Denafrips Iris
- R2R dac with 3d sound: denafrips Pontus II 12th-1
- preamp with automatic home theater bypass, treble/bass tone controls, L/R balance: parasound 2100
- class D amp: NAD c298
- ribbon speakers: PS Audio FR5, GoldenEar BRX
- sealed subwoofers with bass radiators
- Cardas audio cables
- iFi Supanova active noise cancellation power cable
- IsoAcoustics pucks for speakers and components
well known brands that the general public know that have done well is because they have great products that i have bought:
- bose noise cancelling in headphones and car audio in my corvette and cadillac
- Apple Airpods