Thanks to Penon Audio for sending the Hifi Boy OS V3

Gorgeous 2.5mm cable and 2.5mm to 3.5mm SE adapter

Seven packets of silicone tips and one of foam

IT01, IT03 and IT04

iBasso DX150 and IT04

iBasso Amp module Jenga. Inspired by Twister6, executed by Head pie

Amplifier modules 1-5 information here:

Update soon.