EarMen CH-Amp
Image source — © EarMen
Model name
CH-Amp
Maximum Power, 32 Ohms (mW RMS per channel)
3800 (Balanced) + 1500 (Unbalanced)
Maximum Power, 50 Ohms (mW RMS per channel)
N/A
Maximum Power, 300 Ohms (mW RMS per channel)
N/A
Maximum Power, 600 Ohms (mW RMS per channel)
N/A
Frequency response low +/- 3dB (Hz)
N/A
Frequency response high +/- 3dB (Hz)
N/A
Gain (dBu)
N/A
THD (% at 1V RMS, 300 ohms)
0.0008
Signal to Noise Ratio (dB)
>119
IMD (%, CCIR, 300 Ohms)
N/A
Crosstalk (dB, 20Hz-20KHz, 300 Ohms)
N/A
Output Impedance (Ohms)
200 (XLR) + 100 (RCA)
Dimensions (mm)
150 x 30 x 150
Weight (g)
0.550
Official link
The USB DAC in the Earmen ST-Amp is implemented on the ES9280 chip from ESS Technology and is capable of processing digital streams in PCM format with parameters up to 32 bits / 384 kHz and DSD up to DSD128. For connecting headphones, there are 6.35 mm jack and 4.4 mm balanced jack connectors on the front panel. The device also has a balanced 4.4 mm input on the back panel.