One of the reason for the used audio market decrease, a secondary one for sure, the main being the uncertain economic situation on all levels and the old generation dying not re-placed, one of the reason is new products offered at low cost from China...
Sometimes very bad as the dac i bought this week, hyped by reviewers, and because my master piece the SPS TDA 1543 seems broken, i bought the Douk Q11...
I bought a Douk Q11 reading reviews... How wrong i was...
The Douk equaliser T8 pro i own is very good for his peanuts price, but the sound of the Douk Q11 is very bad compared to the SPS, which i repaired and work thanks God...
But i was astounded by a few bucks linear power with no name, not even an off/on button at his peanuts price supply with 4 connections ( 2 USB 5 volt and 123 12 volt) and very well designed and well done anyway...
Incredible improvement for peanuts, very low noise , better timbre, soundstage expansion.......(30 bucks)
My IFI linear power supply 3 times costlier, with only one connection is less good by a margin very audible...
The SPS is so good that i am afraid to buy a Geshelli which will cost many times my basic low cost system... Which is not logical....