Preamps
A9 6K4 tube preamplifier NE5532 OP AMP AUX 5.0 U HIFI stereo mini headphone preamplifier
parameter
Color: Black
Working power: DC 12V 1.5A
Frequency range: 20Hz-20KHz (±3dB)
Audio input: 5.0//U disk
Audio output: /3.5mm headphone port
Signal-to-noise ratio: 110dB (at input)
Distortion: 0.05%
USB memory: 32GB
USB flash drive: MP3/WMA/APE/FLAC/WAV, etc.
Headphone impedance: 6-300 ohms
Headphone maximum output power: 100mW (32 ohms)
Input sensitivity: 0.775V
Output level: 1,4Vrms
High, medium and bass gain: ±6dB
Product size: 13*14*3(CM)