Burson Audio Fun
Fun is a dual mono Class-A head amp and preamp. Its symmetrical circuitry is powered by four sets of Max Current Power Supply (MCPS) developed by...
AYA Nightingale YK-S
As a product developed by Sorannik (sound/driver tuning) and AYA (housing), the YK-S was the first mid-end IEMs to be widely released in Vietnam.
Notes Audio AT10
"Signature" UIEMs coming from Notes Audio, a Vietnamese company based in Hanoi.