dx1

Hi, I have a Topping DX1 which has a "Gain" switch on the back with options: L and H. I plan to buy Sennheiser HD 560S headphones tomorrow, which have the following specifications: Impedance: 120 Ohms Sound pressure level (SPL): 110 dB (1kHz, 1 Vrms) While Topping DX1 has the following...

Hi, I recently received Topping DX1. Today I connected it to my PC, installed the drivers (I'm using Windows 10). Then I connected headphones: Sennheiser PX 100-II (32 Ohms / 114 dB/mW) but the sound is weak compared to when connected directly to my PC (motherboard). For example, volume knob...